Michael J. Sorna, M.D., MSA, FASAM
Medical Director
The Professionals Resource Network is excited to introduce you to our new Medical Director and CEO, Michael John Sorna, MD, MSA, FASAM. Dr. Sorna comes to us with a wealth of training and practice that makes him the ideal choice to lead PRN and the professionals we serve into the future. He was a faculty member at UF Health, where he was the Director of Addiction Services at the Jacksonville Campus and the Medical Director of the UF Health Jacksonville Leon L. Haley Jr. M.D. Brain Wellness Program, a program that treats Veterans and First Responders with mild to moderate TBI and associated mental wellness and substance use conditions. He was on the Board of Directors for PRN from 2020-2024. He did his residency and fellowship at Emory University and is board certified in Psychiatry, Addiction Psychiatry, and Addiction Medicine (ABPM). He is a former Naval Aviator (pilot) and retired Army Officer (Colonel) having served nearly continuously since his original commission in 1988. He has numerous deployments including to Iraq, Afghanistan, Pakistan, and Kosovo. He remains active in the veteran community. He has been married to his wife Betty for 27 years and has 4 children, 2 grandchildren, and a Pug named Lulu.
Tish Conwell
Chief Operating Officer
Tish Conwell is the Chief Operating Officer at PRN. Ms. Conwell has worked at PRN since 2001, and assumed the role of Chief Operating Officer in 2019. Ms. Conwell’s responsibilities include management of the Administrative Department staff and operations, liaison with the Florida Medical Association, Department of Health and Department of Business and Professional Regulation and University researches for PRN research and data analysis.
Delena R. Torrence, MS, CAP, ICADC
Case Manager Supervisor
Delena graduated from California State College (now California University of Pennsylvania), with a Bachelor of Arts in Psychology and an Aging Specialist Certificate. She is also a graduate of Springfield College in Tampa, Florida with a Masters of Science in Human Services, and a minor in Community Psychology. Delena is certified by the State of Florida as an Addiction Professional as well as an Internationally Certified Alcohol and Drug Counselor. She is a veteran of the United States Air Force.
Delena has been employed by the Professionals Resource Network (PRN) as a Case Manager since 2001. She has been involved with referring participants for evaluation and treatment as well as being responsible for monitoring the participants. Delena is assigned to monitor medical students and acts as liaison between the medical school contacts and PRN. Delena assists in orienting and training new case management staff.
Penelope P. Ziegler, M.D., FASAM
Medical Director Emerita
Penelope P. Ziegler, M.D., FASAM, is the former Medical Director and Chief Executive Officer of the Professionals Resource Network, Inc. (PRN). Before coming to PRN in July 2013, Dr. Ziegler was the Medical Director of the Virginia Health Practitioners’ Monitoring Program. She has worked in the addiction field since 1985, and been the Medical Director of several treatment and monitoring programs. She serves on the Board of Directors of the Federation of State Physician Health Programs. Dr. Ziegler is Board Certified in general and addiction psychiatry and in addiction medicine.