Dr. Clark is President-Elect of the American Society of Addiction Medicine. She is board certified in both addiction medicine and psychiatry, and has practiced extensively in private practice and multiple settings. She has worked in opioid treatment programs utilizing methadone and buprenorphine, and served on the faculty of the University of Massachusetts Medical School for eight years. Currently practicing addiction medicine in Appalachian Kentucky, Dr. Clark is the Chief Medical Officer of CleanSlate in Massachusetts, and a Medical Director at CVS Caremark where she addresses issues such as the overutilization of opioids and benzodiazepines.

Dr. Clark is a Fellow of the American Society of Addiction Medicine and a Distinguished Fellow of the American Psychiatric Association. She is currently a member of the Integrated Care Work Group of the American Psychiatric Association; the Substance Abuse and Mental Health Services Administration Expert Committee on Opioid Treatment Program Guidelines; the National Rx Drug Abuse Summit Advisory Board; and the faculty of the Virginia Tech Carilion School of Medicine.