For Providers
Flexible weekend and evening hours
212-288-3454
Meet Our Staff
Our team of experienced professionals is committed to creating a safe, supportive environment where every patient can feel heard and cared for. We focus on evidence-based treatments and a holistic approach to wellness, helping our patients find relief and improve their quality of life.
Our Founders - Guiding Keta’s Vision
Haviva Malina, MD
Co-Founder & Medical Director
Read Bio
Dr. Haviva Malina is a licensed Emergency Medicine physician with more than 15 years of experience caring for patients in high-acuity settings. She graduated Phi Beta Kappa from Barnard College and earned her medical degree from Albert Einstein College of Medicine, completing her Emergency Medicine residency at the Jacobi/Montefiore program.
Dr. Malina became a proponent of ketamine therapy after seeing its rapid and meaningful impact on patients with treatment-resistant depression, anxiety, PTSD, and other mood disorders—particularly during the mental-health crisis of the COVID-19 pandemic. At Keta Medical Center, she leads with a focus on patient safety, compassionate care, and improving access to evidence-based treatments including Spravato®.
Cheryl Malina, MD
Co-Founder & Medical Director
Read Bio
Dr. Cheryl Malina, a board-certified Emergency Medicine physician, is the co-founder of Keta Medical Center. With over 15 years of experience, Dr. Malina has practiced extensively in hospitals across the Bronx and Westchester. She graduated Phi Beta Kappa from Barnard College at Columbia University and earned her medical degree from Albert Einstein College of Medicine, completing her residency at the Jacobi/Montefiore EM Program. Dr. Malina later moved to attending physician roles at several hospitals, most recently as an attending physician at the Good Samaritan Hospital in Suffern, New York.
Dr. Malina’s interest in ketamine therapy was sparked during the COVID-19 pandemic, as she observed a surge in acute psychiatric cases. Impressed by the rapid, positive changes ketamine brought in patients she became a strong advocate for its use in treating conditions like depression, anxiety, and PTSD.
Our Psychiatrists and Therapists - Supporting Your Healing
Yonit Malina, LCSW
Clinical Director of Psychotherapy
Read Bio
Yonit Malina has over 25 years of experience providing therapy across clinical, school-based, university, and private practice settings.
Yonit currently serves as the Clinical Director of Psychotherapy at Keta Medical Center, where she oversees the therapy team and provides Ketamine Assisted Psychotherapy (KAP) to patients. Her therapeutic approach is strengths-based, empowering individuals to overcome life’s challenges and heal from trauma. Yonit draws on a range of therapeutic modalities, including Psychodynamic Therapy, Internal Family Systems and Cognitive Behavioral Therapy, to tailor treatment to each patient’s unique needs.
Yonit’s clinical interests include mood disorders, learning disabilities, A.D.H.D, Autism Spectrum and other developmental disorders, Post Traumatic Stress Disorder (PTSD), grief, and family dynamics.
Ariel Heller, DO
Clinical Director of Psychiatry
Read Bio
Dr. Ariel Heller is a board-certified adult psychiatrist with over seven years of experience providing compassionate and comprehensive mental health care. She has worked in a variety of hospital settings, giving her broad clinical insight across the spectrum of psychiatric care. Dr. Heller brings a collaborative and patient-centered approach to her work. She specializes in treating adults from young adulthood through the geriatric years, with a strong emphasis on building therapeutic relationships and working alongside her patients to help them achieve their mental health goals.
Ron Alcantara, PMHNP-BC
Psychiatric Nurse Practitioner
Read Bio
Ron Alcantara is a board-certified Psychiatric-Mental Health Nurse Practitioner with experience across inpatient and outpatient settings, including Morristown Medical Center, University Hospital in Newark, and SOHOMD. He takes a patient-centered, evidence-based approach to treating anxiety, depression, ADHD, and mood disorders.
Ron earned his Master of Science in Nursing from Fairleigh Dickinson University and his Bachelor’s degree from Rutgers University. His clinical style integrates psychopharmacology with supportive psychotherapy, creating a safe, collaborative environment that supports healing and personal growth.
Stacey Blume Frankel, LMSW
Psychotherapist
Read Bio
Stacey has a Master Degree in Social Work from UCLA and a BA in Psychology from the University of Michigan. She has extensive experience working with a wide range of mental health challenges including depression, anxiety, PTSD, addiction, general life transitions, spiritual emergencies and exploring the subconscious mind through dream analysis.
Faith Consiglio, MD
Psychiatrist
Read Bio
Dr. Faith Consiglio is a board-certified psychiatrist with extensive experience in outpatient mental health care and a strong foundation in psychotherapy and mindfulness-based approaches. She completed her residency at Westchester Medical Center and previously practiced at NYC Psychiatric Associates.
Her clinical work integrates evidence-based treatments with holistic modalities, including mindfulness-based stress reduction and psychodynamic therapy. Dr. Consiglio is also a published author, an active member of the International Society for Sports Psychiatry, and has conducted research on the long-term mental health impacts of COVID-19.
Hillary Eastman, MCSW
Social Worker
Read Bio
Hillary is a highly experienced Licensed Clinical Social Worker, with a wealth of expertise in mental health care, having worked in outpatient, inpatient, and residential treatment settings across New York and Texas. She specializes in evidence-based approaches such as CBT, DBT, and trauma-informed care, helping individuals, couples, and families navigate challenges like anxiety, depression, and PTSD.
Luis A. Febus, PMHNP-BC
Psychiatric Nurse Practitioner
Read Bio
Luis A. Febus, PMHNP-BC is a board-certified psychiatric nurse practitioner specializing in the evaluation and treatment of treatment-resistant depression in adults. He provides comprehensive psychiatric assessments and medication management, with an emphasis on evidence-based strategies for individuals who have not responded to standard antidepressant treatments. Care is collaborative, clinically rigorous, and focused on improving function and quality of life.
Estefania Molina Bracamonte
Psychotherapist
Read Bio
Estefania Molina Bracamonte holds a Master’s Degree from Columbia University and a BA in Psychology from Long Island University. She has experience providing Ketamine Assisted Psychotherapy, as well as utilizing other modalities such as CBT and EMDR. Throughout her career, she has worked with individuals facing various mental health challenges, including depression, anxiety, and PTSD. She is deeply committed to combating mental health stigma, supporting BIPOC communities, and utilizing the PROP lens to assist individuals in overcoming trauma and achieving healing.
She is a strong advocate for social and environmental justice and takes pleasure in working with diverse populations in different settings to understand and advocate for their unique needs. She is enthusiastic about learning and implementing different approaches to meet the individual needs of her clients.
As a Latina from Venezuela, Spanish is her first language, and she is proficient in English, allowing her to effectively work with clients who speak either language.
Charlea Munoz, LMSW
Psychotherapist
Read Bio
Charlea Muñoz, LMSW, is a thoughtful and experienced psychotherapist with a strong foundation in trauma-informed care. She earned her MSW in clinical social work from Fordham University and has provided psychotherapy and crisis intervention support to clients across nonprofit, private practice, and integrated care settings.
Our In-Office Physicians - Ensuring Safe, Expert-Led Care
Apiradee Sanglimsuwaan, M.D.
Associate Medical Director
Read Bio
Dr. Apiradee Sanglimsuwan, MD is a board-certified Emergency Medicine physician with a passion for innovation and excellence. Since 2019, Dr. Sanglimsuwan has been an integral part of Montefiore Medical Center and an Assistant Professor at Albert Einstein College of Medicine.
With a background in chemical engineering from MIT, she combines her technical expertise with a patient-centered approach to enhance care and lead impactful quality improvement projects. Dr. Sanglimsuwan is also deeply dedicated to mentorship, actively supporting resident education and fostering growth in future medical professionals.
Antonio Marra, D.O.
Assistant Medical Director
Read Bio
Dr. Marra is a board-certified emergency medicine physician with over two decades of experience in acute care. After earning a Doctor of Osteopathic Medicine degree from Rowan University School of Osteopathic Medicine in 2000, Dr. Marra completed an emergency medicine residency at Albert Einstein Medical Center in Philadelphia in 2004. Since becoming board certified in 2005, Dr. Marra has dedicated his career to providing compassionate, evidence-based emergency care while pursuing a special interest in substance abuse and addiction treatment. His work bridges the gap between emergency medicine and long-term recovery, helping patients access critical resources and support during times of crisis. Dr. Marra joined the team at Keta in July 2024.
Qark Ahmed, M.D.
Physician
Robert Chang, M.D.
Physician
Christina Eng, M.D.
Physician
Mark Fenig, M.D.
Physician
Patrick Hamati, D.O.
Physician
Rajnish Jaiswal, M.D.
Physician
Jean-Carlos Jimenez, M.D.
Physician
Erol Kohli, M.D.
Physician
Lauren LaCivita, D.O.
Physician
Ludmila Levin, M.D.
Physician
Andrew Melnyk, D.O.
Physician
Ryan McCloskey, D.O.
Physician
Yoojin Na
Physician
Jaimee O’Connor, M.D.
Physician
Ketan Patel, M.D.
Physician
Michael Poulose, D.O.
Physician
Ryan Seeram, D.O.
Physician
Linda Varela, M.D.
Physician
Anna Yarygina, M.D.
Physician
Jenny Zhao, M.D.
Physician
Our Nursing Staff - Driving Care Excellence
Mike Basso
Lead Registered Nurse
Read Bio
With nearly two decades of experience in nursing, Michael brings a depth of clinical knowledge and true compassion to every patient interaction. His background spans high-acuity settings including the Intensive Care Unit (ICU), Emergency Department (ER), and the Cardiac Catheterization Lab, where he has cared for patients and their families during some of their most critical moments. This diverse experience has strengthened his clinical judgment, technical expertise, and ability to remain calm and focused in fast-paced, high-pressure environments.
Michael is deeply committed to delivering safe, empathetic, and patient-centered care. Known for his attention to detail and advocacy for best practices, Michael prioritizes both patient safety and dignity while collaborating closely with interdisciplinary teams. His passion for nursing is rooted not only in clinical excellence, but also in building trust with patients and families, ensuring they feel informed, supported, and respected throughout their care journey. Michael is excited to bring his experience and passion to the Keta Medical Team and to care for the patients that have put their trust in Keta Medical.
Cynthia De La Cruz
Registered Nurse
Jewell Gorges
Registered Nurse
Read Bio
Jewell is a registered nurse with a background in emergency medicine and a strong interest in mental health care. She enjoys working at Keta, building meaningful connections with patients, supporting them throughout treatment, and celebrating their progress. Outside of work, she enjoys crafting, reading, playing board games, and exploring new restaurants or Broadway shows with her husband.
Lyndsay Oliveri
RN
Hilary Oriol
Registered Nurse
Read Bio
My name is Hilary O, I am a registered nurse providing care for individuals with treatment resistant depression. My role focuses on patient safety, therapeutic monitoring, and compassionate support throughout the ketamine treatment process. I am committed to helping patients regain hope and improve their quality of life through innovative mental health care.
Janissa Paulino
Registered Nurse
Read Bio
I am a registered nurse with more than 9 years of professional experience, specializing in infusion therapy and evidence-based patient care. I provide compassionate, patient-centered services to individuals receiving treatment with Keta across New York and New Jersey.
Chantal Rivera
Registered nurse
Read Bio
I’ve been an ER nurse for 12 years, where I developed strong clinical skills and a passion for patient-centered care. After years in emergency medicine, I found a new sense of purpose working in a more specialized, supportive environment. I now love being part of the team at Keta Medical and helping patients on their healing journey.
Jocelyn Saab
Registered Nurse
Read Bio
NYC-based Registered Nurse with 16 years of experience across acute care settings, including 8 years in Emergency Medicine.
Strong background in high-acuity care, patient stabilization, and mental health-aware clinical
Viktoriya Safovich
Registered Nurse
Read Bio
Viktoriya holds a Bachelor of Science in Nursing from Hunter College of The City University of New York. With over 20 years of experience at New York Mount Sinai Hospital, she delivers high-quality care to patients and their families in challenging circumstances. Viktoriya is dedicated to providing compassionate and mindful care, supporting her patients through their mental health journeys and continually learning new ways to enhance their well-being.
Yiset Taveras
Registered Nurse
Patient Liaisons - Guiding You Along the Way
Paul Rosales
Manager, Patient Experience & Engagement
Read Bio
Paul Rosales is the Manager of Patient Experience & Engagement at Keta Medical Center, bringing over a decade of healthcare experience, including work with global mental-health organizations like the Child Mind Institute. He oversees the patient journey across all clinics and specializes in bridging clinical operations, mental-health programs, psychopharmacology, and patient education to design care experiences that are both equitable and impactful for diverse patient populations.
Paul holds a degree from Montclair State University and has a growing focus on public health, social work, and research related to mental-health access, treatment equity, and patient experience. He is driven by a commitment to health equity and building systems that work better for patients.
Furtuna Aliu
Patient Liaison
Read Bio
Furtuna Aliu is a Patient Experience Liaison at KETA, dedicated to ensuring every patient feels supported, informed, and cared for throughout their mental health journey. With a background in the arts and hands-on experience as both a clinical and medical assistant, Furtuna brings a unique blend of empathy, creativity, and professionalism to her role. She is passionate about streamlining the patient experience, helping individuals access the full range of KETA’s resources, and fostering an environment where every voice is heard. At KETA, her goal is to make each visit feel relaxing, supportive, and deeply personal.
Office Administrative Staff- Always Here to Welcome You
Jennifer Barrios
Senior Practice Manager
Read Bio
Jennifer Barrios is a healthcare operations leader passionate about scaling early-stage healthcare startups that drive innovation and deliver meaningful solutions in the healthcare industry. With over a decade of experience in multi-site management, process optimization, and team development, Jennifer has led growth and expansion for organizations across medical, sports & wellness, regenerative health and mental health sectors.
Currently, Jennifer serves as Senior Practice Manager at Keta Medical Center, overseeing multi-location operations and care coordination for advanced mental health treatments. Her core expertise spans business growth, process optimization, digital health solutions, and multi-site operations, with hands-on experience managing and empowering geographically diverse teams to deliver exceptional results.
Outside of work, Jennifer is an avid tennis player and loves taking art history classes at the amazing museums of New York City.
Mary Cristiano
Senior Medical Administrator (Midtown Manhattan)
Read Bio
Mary is the Senior Medical Administrator at our Midtown office, bringing a strong background in healthcare and patient support. She joined Keta Medical Center in February 2025 and has previous experience in pediatrics, as well as serving as a surgical technician for a plastic surgeon’s practice. Mary is known for her attention to detail, organizational skills, and dedication to creating a smooth, welcoming experience for every patient. Outside of work, she enjoys playing with her three dogs, staying active through exercise, and discovering new restaurants across the city with friends. Her warmth and professionalism make her a valued part of our team.
Alexis A
Office Administrator (Brooklyn Heights)
Read Bio
Alexis is a caring and organized medical office administrator who enjoys creating a positive experience for patients and supporting a smooth, efficient workflow. She values kindness, teamwork, and attention to detail in everything she does.
Sara Aselta
Office Administrator (New Rochelle, NY)
Read Bio
My name is Sara, and I am the Medical Office Assistant at our New Rochelle location. I help the patients feel welcome with a friendly face and a warm greeting so their treatments are off to a good start. I assist with any of their scheduling needs and questions, while managing the day to day flow of the office. I love how Keta provides not just treatments, but a whole experience for each patient, including comfy chairs, immersive music, bright, floral scents, and cozy blankets.
Joanna Lazo
Office Administrator (Oradell, NJ)
Read Bio
Dedicated office admin, with experience and background in healthcare. Skilled in managing patient scheduling, and other administrative tasks to support a positive experience for both patients and care team.
Theresa Rausa
Office Administrator (Midtown Manhattan)
Read Bio
Theresa brings over six years of experience providing compassionate and efficient patient support. As a Medical Assistant with a Bachelor’s degree in Biology from Brooklyn College, she has built a strong foundation in both clinical and administrative operations, emphasizing empathy, communication, and precision in every interaction. Now advancing her career in nursing, Theresa is dedicated to lifelong learning and professional growth. Her genuine passion for helping others drives her to deliver exceptional, patient-centered care while fostering trust, collaboration, and meaningful connections that positively impact each patient’s health and overall experience in the healthcare setting.
Emma Reina
Office Administrator (Brooklyn Heights)
Read Bio
I’m Emma Reina, the Medical Office Administrator at Keta Medical Brooklyn Heights. I help manage the daily operations of the clinic — from coordinating patient care and scheduling appointments, and following up with the medical team to ensure every visit goes smoothly. I take pride in creating a welcoming, organized environment where patients feel comfortable and supported throughout their treatment journey.
Outside of work, I love spending my time exploring the city — whether that’s biking through new neighborhoods, discovering hidden restaurants, or checking out local spots with friends. I’m passionate about wellness, balance, and making meaningful connections both in and outside of the office.
Charleen Rivera
Office Administrator (Oradell, NJ)
Read Bio
Charleen is a medical office assistant with several years of experience in hospital and medical settings. She is passionate about patient care and loves helping people, coordinating care, and building meaningful connections with patients while providing compassionate, efficient administrative support. Always eager to learn and grow, Charleen strives to combine professionalism, empathy, and strong organizational skills to make a positive impact in every setting.
India Rubin
Office Administrator (86th Street, Upper West Side)
Read Bio
India is a Medical Office Assistant who brings empathy, organization, and a genuine passion for helping others to every patient interaction. She recently earned her Bachelor of Arts in Psychology from the University of Colorado Boulder, where she developed a deep understanding of human behavior and mental health. India values creating a welcoming and supportive environment where patients feel comfortable and cared for. Known for her calm and compassionate nature, she strives to make each visit a positive experience and looks forward to growing her career in healthcare while continuing to support others’ well-being.
Amanda Shelters
Westfield Admin
Read Bio
Amanda’s professional career has consistently involved administrative and supervisory leadership primarily within a rehabilitation hospital setting. She holds a Master’s degree in Healthcare Administration from Walden University and a BA in Health Science from Sacred Heart University. Her professional responsibilities have consistently involved managing staff, assisting with overseeing daily operations, ensuring compliance with healthcare regulations, and contributing to various hospital departments.
Salina Xu
Office Administrator (96th Street, Upper West Side)
Read Bio
Salina Xu is a Medical Office Assistant at Keta Medical with experience in primary care, cardiology, GI, ophthalmology, and optometry. She previously worked as a Medical Scribe and Office Coordinator, bringing a strong background in patient care and office management. Salina holds a Bachelor of Science in Psychology and is passionate about destigmatizing mental health and making healthcare more accessible.
Outside of work, Salina enjoys flower arranging, pottery, photography, and spending time with her dog, Stormi, whom she loves dressing up.
Intake Team - Introducing You to the Keta Treatment Process
Liz Nardelli
Patient Onboarding Manager
Read Bio
Liz brings over 20 years of marketing and sales experience to Keta Medical Center. A Massachusetts native and Merrimack College graduate, she began her career with Simon Property Group before serving as Center Director at Sylvan Learning Centers, where her leadership and client-focused approach earned multiple awards. She later directed Marketing and Business Development at Guaranteed Rate. Drawn to Keta’s innovative treatments and compassionate care model, Liz is passionate about delivering an exceptional patient experience. She lives in Massachusetts with her husband and two children, and enjoys event planning, traveling, cooking, and volunteering in her community.
Hannah Amidon
Onboarding Specialist
Read Bio
Based in Vermont, Hannah is a dedicated professional who values balance, family, and creativity. When she’s not at work, she enjoys cooking and spending quality time with her three daughters. Passionate about growth and connection, Hannah brings warmth, authenticity, and purpose to everything she does.
Jessica Frykman Korzen
Insurance Authorization Manager
Read Bio
Jessica makes sure every Keta Medical Center patient meets their insurance requirements with accuracy and care. She manages the prior authorization process from start to finish—keeping documents, details, and deadlines on track so treatment can move forward smoothly. With a background in marketing and design, Jessica also lends her creative eye to Keta’s visual content and helps keep the team organized behind the scenes. Known for her reliability, attention to detail, and calm approach under pressure, she plays a key role in keeping Keta’s administrative systems efficient and patient care uninterrupted.
Lisette L
Intake Specialist
Read Bio
Lisette is a compassionate and dependable professional who brings focus and care to her role at KETA Medical Center. She skillfully manages patient caseloads while ensuring the lead triage process runs smoothly and accurately. With a supportive, collaborative approach, Lisette helps guide patients with clarity and kindness. Her flexibility and strong commitment to continuity of care contribute to a positive and reassuring intake experience for everyone she supports.
Outside of work, Lisette always has a soundtrack playing—whether she’s staying productive or spending quality time with friends and family.
Erin Miller
Patient Intake Specialist
Read Bio
Erin is an Intake Specialist at Keta Medical Center with extensive experience in customer service and medical patient intake. She takes pride in helping patients feel informed and supported, and is always happy to answer questions about our centers and treatment options. Outside of work, Erin enjoys spending time outdoors, being with family, and relaxing with a hot cup of tea.
Jesenia R
Intake Specialist
Read Bio
Jesenia is a reliable and compassionate member of the team at KETA Medical Center. She is dedicated to guiding patients in a professional, organized manner, ensuring a smooth and supportive experience throughout their care. Her strong organizational skills are a valuable asset in a fast-paced environment and contribute significantly to the team’s overall efficiency.
Outside of work, Jesenia enjoys spending time with her cats, staying active through fitness, and expressing her creativity through artistic pursuits—all while drawing inspiration from music.
Ashley Rodriguez
Patient Intake Specialist
Read Bio
Ashley brings strong communication skills and a passion for helping others to her role at Keta Medical Center. She guides new patients through the intake process with warmth and professionalism, ensuring every individual feels welcomed, supported, and informed from the very beginning.
As a bilingual team member fluent in English and Spanish, Ashley is dedicated to making the intake experience smooth and accessible for all patients.
Outside of work, she enjoys exploring new restaurants with her family, trying out fun activities around New York City, and getting away to relax at nearby beaches.
Laura Silvestro
Patient Intake Specialist
Read Bio
Laura recently joined Keta Medical and brings extensive experience in both customer and sales functions, having worked across various large and small businesses. Her comprehensive skills, particularly in customer service, make her a valuable addition to the Intake team. In her free time, Laura enjoys spending time in New Hampshire and on Cape Cod with family and friends.
Sarah Thorpe
Patient Intake Specialist
Read Bio
As a Patient Intake Specialist at Keta Medical Center, I truly enjoy connecting with patients and being part of their mental health journey. Helping others take that important first step toward healing is incredibly rewarding. I live in New Hampshire and love embracing each changing season—whether it’s hiking in the fall, skiing in the winter, or spending sunny days outdoors in the summer.
Jamie Tower
Patient Intake Specialist
Read Bio
A graduate of Eastern Connecticut State University, Jamie brings extensive customer service experience to the healthcare field. Passionate about patient care and clear communication, she is dedicated to ensuring every individual who connects with Keta Medical Center has a positive and supportive experience.
Rebekah Walker
Patient Intake Specialist
Read Bio
Rebekah is an Intake Specialist at Keta Medical Center with over 20 years of experience in healthcare. She began her career after earning her degree in Medical Assisting and has dedicated her professional life to helping patients feel comfortable and supported from their first interaction. A lifelong Vermonter, Rebekah enjoys the peacefulness of country living and the excitement of visiting New York City for work. Outside the office, she loves spending time with her husband and their four active children, cheering them on through every season of sports.
Senior Management and General Administrative Staff
Haviva Malina, MD
Co-Founder & Medical Director
Read Bio
Dr. Haviva Malina is a licensed Emergency Medicine physician with more than 15 years of experience caring for patients in high-acuity settings. She graduated Phi Beta Kappa from Barnard College and earned her medical degree from Albert Einstein College of Medicine, completing her Emergency Medicine residency at the Jacobi/Montefiore program.
Dr. Malina became a proponent of ketamine therapy after seeing its rapid and meaningful impact on patients with treatment-resistant depression, anxiety, PTSD, and other mood disorders—particularly during the mental-health crisis of the COVID-19 pandemic. At Keta Medical Center, she leads with a focus on patient safety, compassionate care, and improving access to evidence-based treatments including Spravato®.
Cheryl Malina, MD
Co-Founder & Medical Director
Read Bio
Dr. Cheryl Malina, a board-certified Emergency Medicine physician, is the co-founder of Keta Medical Center. With over 15 years of experience, Dr. Malina has practiced extensively in hospitals across the Bronx and Westchester. She graduated Phi Beta Kappa from Barnard College at Columbia University and earned her medical degree from Albert Einstein College of Medicine, completing her residency at the Jacobi/Montefiore EM Program. Dr. Malina later moved to attending physician roles at several hospitals, most recently as an attending physician at the Good Samaritan Hospital in Suffern, New York.
Dr. Malina’s interest in ketamine therapy was sparked during the COVID-19 pandemic, as she observed a surge in acute psychiatric cases. Impressed by the rapid, positive changes ketamine brought in patients she became a strong advocate for its use in treating conditions like depression, anxiety, and PTSD.
Moshe Malina
Chief Executive Officer
Read Bio
Moshe Malina is the CEO of Keta Medical Center. Prior to joining Keta, he spent more than 20 years at Citi in senior leadership roles across the technology and legal organizations. Most recently, he led a global team responsible for major technology transformations and remediation initiatives. Earlier in his tenure, Mr. Malina served in Citi’s legal department, where he managed teams overseeing patents, M&A, venture investments, and complex tech transactions, and served as general counsel of Citi Ventures, the firm’s corporate venture arm.
Mr. Malina began his career as an attorney at Cleary Gottlieb. He holds a J.D. from Columbia Law School and a B.S. in Chemical Engineering from Columbia Engineering.
Rachel Olstein Kaplan
Chief Operating and Marketing Officer
Read Bio
As COO, Rachel leads operations and growth strategy for Keta. She is passionate about ensuring that more people have access to high-quality, compassionate and effective mental health care.
Rachel previously founded and ran Aurora Marketing, and spent 7 years at Wix.com. She has served as VP of Marketing at StuffThatWorks, a startup using AI-powered crowdsourcing to help patients identify effective treatments for their conditions, and consulted for KHealth, where she helped build their digital library of healthcare resources. Rachel brings over a decade of experience at the intersection of healthcare, technology, and marketing.
Yoni Bak
Director of Business Operations and Technology
Read Bio
Yoni Bak has over 25 years of Construction Management experience. He has a background in Civil Engineering. He will be overseeing the expansion of the practice into new markets in Long Island, Westfield, NJ and NYC. Yoni is committed to making sure all new offices provide the same warm and pleasant environment our patients have come to expect from Keta Medical.
Yoni will also be coordinating the implementation of management technology to streamline business operations.
Yoni lives in NJ with his wife, 4 children and Bichon-Poodle.
Luke Wiemers
Director of Human Resources
Read Bio
Luke brings years of experience in recruitment, talent strategy, and human resources leadership within healthcare and professional services. Before joining Keta Medical Center, he spent six years with The Nautical Group, supporting major health systems and corporate clients nationwide.
His background also includes recruitment and HR roles with Memorial Sloan Kettering, Northwell Health, and Carson Tahoe Health. At Keta, Luke oversees hiring, employee relations, onboarding, and benefits across all locations. He is passionate about building teams that reflect compassion, collaboration, and innovation in mental health care.
Anat Segal
Director of Growth & Partnerships
Read Bio
A Cannes Lions award-winning marketer, Anat brings over 20 years of experience in marketing, growth strategy, and brand development to Keta Medical Center. Her career spans the entertainment, technology, and healthcare industries, including partnerships with global brands such as PepsiCo and Unilever. With family members in psychiatry, Anat has seen firsthand the impact of compassionate, science-based mental health care—fueling her passion for Keta’s mission. At Keta, she leads initiatives that drive direct-to-consumer growth and strengthen partnerships with clinicians, organizations, and communities. Based in Austin, Texas, she enjoys hiking, playing catch ball, and spending time with her family and two dogs.
Orli Tesler
Team Lead, Billing & Insurance
Read Bio
Orli Tesler leads the Insurance and Billing team at Keta Medical Center, ensuring the department operates efficiently through structured systems, clear communication, and strong collaboration. Before joining Keta, she spent over a decade in research and development, where she led production teams, built operational frameworks, and translated complex ideas into scalable, efficient systems.
That foundation in design and production process optimization shapes her approach to healthcare operations, where she prioritizes organized systems, seamless data coordination, and communication alignment between the billing team, management, and clinical staff. Her leadership focuses on bringing clarity, structure, and empathy to support both the team and patient care.
Outside of work, Orli enjoys yoga, gardening, and spending weekends camping with her family, always starting the day with a strong cup of coffee.
Peggy Simpson
Recruiter
Read Bio
Peggy is a seasoned Human Resources and Talent Acquisition professional with more than 30 years of experience across corporate recruiting, HR management, and office administration. Before joining our team, she spent 14 years as an Enterprise Recruiter at Experis (a ManpowerGroup division), where she earned the company’s “Circle of Stars” recognition for top performance.
Her background also includes HR and recruiting roles with Marriott Corporation, First Federal Savings and Loan, and a boutique law firm. Peggy holds a B.A. in English and is known for her professionalism, versatility, and commitment to exceptional hiring practices.
Reyna Bramon
Medical Office Assistant
Sara Zucker
Operations Coordinator
Read Bio
Sara joins Keta Medical Center as an Operations Coordinator, bringing a strong background in project management, process improvement, and organizational excellence. She is known for her keen attention to detail and ability to manage complex initiatives efficiently and thoughtfully.
Prior to joining Keta Medical Center, Sara supported several nonprofit organizations across a diverse range of projects, including complex travel programs, large-scale events, and organization-wide process improvement initiatives. She also has private-sector experience in the medical e-commerce space, further strengthening her operational and cross-functional skill set.
With an undergraduate background in Psychology and Economics, Sara is excited to contribute to work that aligns her passion for improving mental health with her love of building clear, effective organizational systems.
When she’s not streamlining processes or managing complex project lifecycles, Sara enjoys cooking, shopping, and traveling.
FAQ’s
1. Is ketamine therapy safe?
Yes, when administered under medical supervision by trained physicians, ketamine therapy is safe. At Keta Medical Center, our team is led by emergency medicine physicians with extensive training, ensuring that every treatment adheres to the highest standards of medical safety.
2. What are the potential side effects of ketamine therapy?
Side effects may include mild nausea, dizziness, feelings of dissociation, anxiety or increased blood pressure. These typically resolve shortly after the treatment session. Our medical team monitors patients closely to manage any side effects effectively.
3. Is ketamine treatment covered by insurance?
Esketamine (Spravato) Nasal Spray is covered by most insurance plans. IV ketamine infusions are not typically covered.
FAQs
Is ketamine safe for palliative care patients?
Yes, ketamine is safe when administered in a clinical setting under professional supervision. Our team monitors each patient closely to ensure proper dosing and minimize any potential side effects.
Will ketamine treatment affect my current medical regimen?
Ketamine therapy is often used alongside existing treatments to enhance their effectiveness. Our team collaborates with your healthcare providers to ensure a comprehensive approach to your care.
See if Ketamine Is Right for You
We know life is busy, so at Keta Medical Center, we offer evening and weekend hours to fit your schedule. Our friendly administrative staff is always available to answer your questions and address any concerns. Our goal is to support you as you embark on your mental health journey with ketamine therapy.