OHSAM Leadership 


Dr. Theodore Parran


Dr. Ted Parran is a 1982 graduate from Case Western Reserve University School of Medicine.  He completed a residency in Internal Medicine at the Baltimore City Hospital of Johns Hopkins University School of Medicine. In 1988 he returned to Cleveland and CWRU School of Medicine.  He is widely published and has been an invited speaker at national and international conferences for the past three decades.  He currently co-directs the current Addiction Medicine Fellowship Program at St. Vincent Charity Medical Center.


Dr. Krisanna Deppen


Dr. Krisanna Deppen is board certified physician in both Family Medicine and Addiction Medicine. After graduating from Northeast Ohio Medical University, she completed her family medicine residency at Grant Medical Center in Columbus, Ohio. She completed an Addiction Medicine Fellowship at Swedish Medical Center in Seattle Washington where her passion for caring for pregnant women with substance use disorders began. She currently works at OhioHealth-Grant Medical Center as the program director of their Addiction Medicine Fellowship. She recently completed her masters in Population Health Management at Jefferson University and looks forward to using this knowledge to expand care to our vulnerable populations.


Dr. Ron Suprenant


Dr. Suprenant is Board Certified in Family Medicine and Addiction Medicine.  He is a distinguished fellow of ASAM.  He is a Clinical Associate Professor at Wright State University Boonshoft School of Medicine.  He is an active advocate through the Ohio Society of Addiction Medicine and through ASAM for patients with substance use disorders and the professionals who care for them.  He has taught a variety of courses for ASAM and provides educational talks to interested groups as requested.  He has practiced in both outpatient and residential addiction treatment programs.  He currently maintains a private Addiction Medicine practice with offices in the Dayton and Cincinnati areas.


Dr. Dana Vallangeon


Dr. Vallangeon (Dr. Dana) arrived at OACHC in the Spring of 2019 as the new Chief Medical Officer. As CMO, she assists in efforts to lead health center clinical teams to the highest levels of quality and operational efficiency. Her dual board certification in Family Medicine and Addiction Medicine supports her work with the OACHC Behavioral Health and Quality teams to continue the adoption of effective Substance Use Disorder treatment throughout Ohio’s FQHCs. A former health center CEO and staff physician for over 17 years, she has also been a medical director at a free clinic and at a substance use disorder/mental health treatment facility, along with an ongoing role as adjunct medical school and Family Medicine residency faculty. She received herM.D. degree from The Ohio State University College of Medicine and her B.S. degree from Olivet Nazarene University.

Delos Reyes Photo

Dr. Christina Delos Reyes

Immediate Past President

Dr. Christina Delos Reyes is an addiction psychiatry physician affiliated with Case Western Reserve University School of Medicine and University Hospitals Case Medical Center. She received her medical degree from Northeastern Ohio Universities College of Medicine and completed her residency and fellowship at University Hospitals of Cleveland. Dr. Delos Reyes is board certified in adult psychiatry and addiction psychiatry. She also holds a certification in addiction medicine from the American Society of Addiction Medicine. In her expansive role at Case Western Reserve and University Hospitals, Dr. Delos Reyes is currently the director of the addiction psychiatry fellowship and associate professor of psychiatry. She also practices at a community behavioral health agency and co-chairs the Ohio Department of Mental Health and Addiction Services’ Clinical Advisory Group for Ohio Opioid Curricula. Dr. Delos Reyes has been selected five times by her peers as a Best Doctor in America.


Elise Szabo


Coming Soon.

OHSAM is the Ohio Society of Addiction Medicine 

It is a group of addiction specialists and other providers focused on caring for patients with substance use disorder.  OHSAM is a chapter of ASAM, founded in 1954, which is a professional society representing over 4,300 physicians, clinicians and associated professionals in the field of addiction medicine. OHSAM is dedicated to increasing access and improving the quality of addiction treatment, educating physicians and the public, supporting research and prevention, and promoting the appropriate role of physicians in the care of patients with addiction.