Our mission is to reinvent the drug rehab model - to replace folklore with science, drug dealers with doctors, and stigma with privacy, convenience, and choice.
We're a diverse collective of hearts and minds - healthcare providers, scientists, techies, and citizens - on a mission to offer the best of medicine without the baggage of rehab.
Interested in joining the team? Email us
Shoshana Aronowitz is a prepared nurse researcher and a certified Family Nurse Practitioner specializing in substance use and reproductive/sexual health. She received her bachelor’s degree from McGill University, her master’s degree from University of Vermont, and her PhD from University of Pennsylvania. She is currently completing a postdoctoral fellowship program from the National Clinician Scholars Program and will complete training for a master’s in health policy research in June 2021. Her research focuses on harm reduction modalities, racial disparities in pain treatment, and reproductive and sexual healthcare in the context of the opioid overdose crisis.
Hung Le is a certified Adult-Gerontology Primary Care Nurse Practitioner. He received his nursing degree from the Yale School of Nursing. His background is in primary care and management of substance use disorders, and his clinical interests include opioid use disorder, harm reduction, and using telehealth to increase access to addiction care. In addition to working at Ophelia, Hung also works as an addiction medicine consultant in a hospital. Originally from California, he now calls the east coast home. In his free time, he enjoys cooking with his partner and taking naps with his dog.
Julie Edwards is a certified Family Nurse Practitioner. She completed her master’s degree and fellowship on addiction medicine at Yale University, where she focused on the integration of substance use disorder treatment in primary care. She also completed her Addiction Studies Graduate certificate in public health at the University of Connecticut, focusing on utilizing research, policy, and systems approaches to improve the treatment of substance use disorders. Her areas of clinical interest include harm reduction, increasing access to treatment, reducing stigma, and primary care and behavioral health. Her philosophy is to be attentive, open minded, and employ trauma-informed, patient-centered care in order to assist patients in achieving their goals for recovery.
Nellie Nutt is a Family Nurse Practitioner with a degree from the Yale School of Nursing. Prior to becoming a nurse practitioner, she worked as an herbalist and Ayurvedic Practitioner, and as a field biologist. Her interests in healthcare include health justice, LGBTQ and mental health, and HIV treatment. Nellie specifically recognizes the importance of treating substance use disorder through medication assisted-treatment (MAT) because of the dramatically positive impact Suboxone therapy has provided people. In the interim she likes to spend time in nature with her baby and chihuahua mutt, garden, and knit socks.
Amber Nelson is a certified Family Nurse Practitioner (FNP) with over a decade of experience in mental healthcare—including substance use disorder. Amber holds a Bachelor of Science in Nursing from Drexel University, as well as a Master of Science in Nursing from Frontier Nursing University. She has experience evaluating, diagnosing, and treating both children and adults with mental health and substance use disorders. Amber brings her expertise, empathy, and broad skill set to each patient she works with, helping them throughout their own personal journey with recovery. When Amber is not working, she enjoys spending time with her family and traveling often.
Edin Memisevich is an Advanced Practice Registered Nurse. He was raised in Yugoslavia and came to the United States after serving in the civil war for six years. He graduated as a Registered Nurse from SUNYIT Utica/Rome and received his graduate degree from Kaplan University. When he is not working at Ophelia, he treats acute and chronic illnesses such as diabetes mellitus, hypertension, and obesity at a Community Health Center in Connecticut. His military career has given him insight to the origins of depression, anxiety, and PTSD and has prepared him to treat patients with these conditions in tandem with patients with substance use disorders. He has two German Shepherds, Sasha and Bella, one cat Oree, and one green cheek conure parrot called Gustav.
Treesa Williamson is an Adult/Gerontology Primary Care Nurse Practitioner. She is currently enrolled at Wilkes University for her post-graduate Psychiatric and Mental Health Nurse Practitioner. Previously, she was a registered nurse with 15 productive years of clinical experience at the Hospital of the University of Pennsylvania. She then received her Nurse Practitioner license and worked in the primary care setting to treat patients with acute and chronic medical conditions, detoxification, substance abuse, and mental health disorders. She has worked in several hospital settings including the Emergency Room, OR recovery unit, Homecare, Psychology, Cardiology, and Oncology.
Rommel received his Masters in Nursing Education from Western Governors University. Prior to joining Ophelia, he worked as a nurse manager for Mount Sinai West’s Psychiatry Department & Addiction Institute. He has 10 years of nursing experience in Psychiatry and Substance Use/Addiction. Rommel joined Ophelia to be part of the change that makes treatment more accessible and convenient to patients who’ve been denied it for so long. In his free time, Rommel enjoys reading, spending time outdoors, hiking with his dog, camping and cycling.
Lead Nurse Care Manager
Christine Tucker is a family nurse practitioner, earning both her BSN and MSN at Misericordia University in Dallas, PA Prior to coming to Ophelia, she worked in diabetes and endocrine medicine and most recently, addiction medicine.
Her interests include mental health, homelessness, and stigma associated with MAT.
Christine is a third generation nurse. In her free time, she enjoys spending time with her family, granddaughter Nora and two pups Scott & Freddie.
Alexandra McClellan is a Nurse Care Manager. She received her Bachelor of Nursing Science from West Chester University and she is enrolled in a Family Nurse Practitioner program at Wilkes University. Before her time at Ophelia, she worked as a substance abuse and mental health registered nurse. Her passion is to help those suffering from the disease of addiction and co-occurring mental illnesses. She joined Ophelia to help standardize the MAT model which she believes is going to change many lives and help fight the opioid epidemic. In her free time, she enjoys spending time with friends and family as well as her Siberian husky, Ghost and her crazy pitbull, Luna.
Nurse Case Manager
Sandra earned her masters of nursing at Thomas Jefferson University in Philadelphia. She is board certified in family health. She has provided primary care services to patients across the age spectrum in both the clinic and acute care settings for over a decade. Her passion is addiction medicine and helping her peers overcome personal bias to end the stigma against medically assisted treatment. In addition to working for Ophelia she also heads an outpatient MAT program in rural PA. In her free time she enjoys outdoor activities with her family.
Interested in joining the team? Email us
Zack Gray is Co-Founder and CEO of Ophelia. He started Ophelia after losing someone he loved to an overdose.
Zack is a Y Combinator-backed entrepreneur, a Columbia University funded research scholar, and a Wharton MBA graduation speaker. Previously, Zack led customer acquisition for a residential solar startup, which he helped grow to $30M in revenue.
Zack studied astrophysics and philosophy at Columbia University and received his MBA from The Wharton School.
Co-Founder & CEO
Mattan Griffel is Co-Founder and COO of Ophelia. Mattan helps scale the technology and processes that allow the company to grow.
Mattan is also an award-winning faculty member at Columbia Business School and a two-time Y Combinator-backed entrepreneur. He is an Innovation Fellow at the Lang Center for Entrepreneurship and was selected as one of Forbes’ 30 Under 30 in Education.
Mattan studied Philosophy and Finance at New York University and wrote his thesis on the metaphysics of consciousness.
Co-Founder & COO
Dr. Adam Bisaga is a Professor of Psychiatry at the Columbia University Irving Medical Center and a Research Scientist at the New York State Psychiatric Institute. His NIH-funded research is focused on development of new medications to treat opioid and other substance use disorders. Dr. Bisaga co-directs national training, mentoring, and technical assistance programs aimed at individual practitioners and states to implement treatments for opioid use disorder. He is a member of UN Expert Panel and the UN ODC International Scientific Network. He conducts trainings and addiction treatment program developments internationally and he co-edited “UN/WHO International Standards for the Treatment of Drug Use Disorders.” Dr. Bisaga is a practicing addiction psychiatrist and an author of the book “Overcoming Opioid Addiction.”
Dr. Williams is Assistant Professor of Clinical Psychiatry, Columbia University Division on Substance Use Disorders, and Research Scientist, New York State Psychiatric Institute. He attended Princeton University's Woodrow Wilson School of Public and International Affairs for his undergraduate degree in domestic health policy, completed his medical degree at the University of Pennsylvania where he also earned a Master in Bioethics. He completed psychiatry training at NYU-Bellevue, and a NIDA funded T32 research fellowship in Addiction Psychiatry at Columbia.
Head of Strategy & Development
Senior Vice President of Payor Operations
Director of Clinical Operations
Patient Operations Manager
Director of Engineering
Alec Ross is an American technology policy expert who was Senior Advisor for Innovation to Secretary of State Hillary Clinton for the duration of her term as Secretary of State.
New York Times Bestselling Author, Investor & Entrepreneur
Adam Grant has been Wharton’s top-rated professor for 7 straight years. As an organizational psychologist, he is a leading expert on how we can find motivation and meaning, and live more generous and creative lives. He has been recognized as one of the world’s 10 most influential management thinkers and Fortune’s 40 under 40.
Award-winning Wharton Professor, New York Times Bestselling Author
Partner at Prehype Managing Partner at Arabella
Partner at Prehype Managing Partner at Arabella
Clinical Operations Advisor