Dr. Selonick is a native of Cincinnati, Ohio, and attended Williams College and The Johns Hopkins University School of Medicine. He served as intern, Assistant Resident and Senior Resident on the Medical Service at The Johns Hopkins Hospital before becoming a Clinical Associate at the National Cancer Institute. He returned to Johns Hopkins as Medical Chief Resident and joined the faculty, where he holds a joint appointment in medicine and oncology and is still active in teaching clinical medicine to medical students and house staff. He joined the group practice in 1983. Dr. Selonick is board certified in Internal medicine, Hematology and Medical Oncology. He resides with his wife, Martha, two daughters and a son in Crownsville.