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Our Providers

Peter Ronan, MD, FASAM

Portrait of Dr. Ronan

Dr. Ronan is board certified in internal medicine. He is the medical director of our addiction medicine department and the assistant medical director of the UHS hospital system.

Dr. Ronan has been working in the field of addiction medicine for over 30 years. He started the addiction medicine department’s Suboxone® (buprenorphine/naloxone) Program in 2003 and ran the hospital’s medically supervised withdrawal unit before it was converted into additional beds in inpatient New Horizons. He supervises the clinical teams in our inpatient, outpatient, opioid treatment, and Suboxone® (buprenorphine/naloxone) programs. He is currently overseeing the expansion of our Medication-Assisted Treatment Program (methadone clinic).

He is a clinical assistant professor of internal medicine at SUNY Upstate Medical University and gives an addiction medicine lecture series to all SUNY Upstate Medical University Binghamton Clinical Campus students during their psychiatry rotation. He has a special interest in working with the UHS hospitalist program in the care of patients with substance use disorders and has provided extensive education to providers about caring for patients with substance use disorders in the hospitalized setting. He is a Providers Clinical Support System (PCSS) buprenorphine trainer and has trained and mentored numerous clinicians in buprenorphine/naloxone prescribing.

He graduated from St. Joseph’s University in Philadelphia with a bachelor’s in biology. He then attended SUNY Upstate Medical University and completed his internal medicine residency at UHS. He did a fellowship year in internal medicine as a chief resident at UHS.

Julia Hunter, MD, MPH, FASAM

Portrait of Dr. Julia Hunter

Dr. Hunter is board certified in both addiction medicine and family medicine. She is the assistant medical director of our addiction medicine department.  She completed a fellowship in addiction medicine at Summa Health in Akron, Ohio. As a fellow, she was named a Ruth Fox Scholar by the American Society of Addiction Medicine.

 With Dr. Ronan, she oversees the clinical teams in our inpatient, outpatient, opioid treatment, and Suboxone® (buprenorphine/naloxone) programs. She created and runs the alcohol and sedative hypnotic withdrawal consultation service, the comprehensive program for pregnant patients with opioid use disorder, and the Medication-Assisted Treatment Program (methadone clinic)’s hepatitis C clinic. She implemented the hub-and-spoke model for treating opioid use disorder in the UHS system. She is interested in fighting addiction’s stigma, treating hepatitis C in people who use drugs, and managing addiction in pregnancy.

 She is a clinical assistant professor of family medicine at SUNY Upstate Medical University and started an addiction medicine elective for both medical students and residents. She runs the department’s monthly journal club and writes a weekly addiction medicine newsletter. She is a Providers Clinical Support System (PCSS) buprenorphine trainer and has trained a number of regional providers in buprenorphine/naloxone prescribing.

She graduated from Harvard University with honors with a bachelor’s in history and graduated from Dartmouth College with a master of public health. After attending SUNY Upstate Medical University, she completed her family medicine residency at the University of Vermont.

Vadim Davydov, DO

Davydov portrait

Dr. Davydov is board certified in family medicine and works as the clinical director of both Delaware Valley Hospital’s Addiction Treatment Program and the outpatient Suboxone® (buprenorphine/naloxone) program at UHS’ primary care office in Walton. He graduated from New York Medical College of Osteopathic Medicine and completed his residency at St. Barnabas Hospital in the Bronx. He established a model for treating opioid use disorder in primary care that has been successfully replicated in other practices in the UHS system.

Ryan Little, MS, FNP-BC

Ryan Little portrait

Ryan Little graduated from Binghamton University with both a bachelor of science in nursing and a master of science. He works as the lead clinician on inpatient New Horizons and as a primary care provider at UHS’ Upper Front Street clinic. He is interested in integrating addiction medicine into the primary care medical home and is working to reduce barriers to Suboxone® (buprenorphine/naloxone) prescribing among advance practice practitioners.

Our Clinical Team

We are proud to have more than 20 licensed social workers and Credentialed Alcoholism and Substance Abuse Counselors, 15 registered nurses, and numerous support staff who work together to provide integrated and evidence-based care.

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