Dr Punim was born and educated in New York. He received his bachelor’s degree from Cornell University and was elected to the national pre-medical honor society. During college he worked summers in the U. S. Postal Inspector’s office in Manhattan. He received his M.D. (with honors in Internal Medicine) from State University of New York at Brooklyn. As a student, he participated in research on pulmonary edema. After graduation, he served a medical internship at Philadelphia General Hospital and a residency at Maimonides Medical Center. He completed his training with a two year fellowship in Endocrinology and Metabolism at Temple University. His fellowship included experience with inpatient consultation and outpatient clinics for diabetes, thyroid disorders and infertility. He attained board certification in both Internal Medicine and Endocrinology and Metabolism.
After fellowship, Dr. Punim was appointed to the faculty at the University of Pennsylvania Medical School. He directed the endocrinology and diabetes clinics at Presbyterian Hospital and taught medical students, interns and residents. In 1982 he began practicing in Orange County. Over the years, he has volunteered with committees of the America Diabetes Association and has been a frequent lecturer to physicians, nurses, other health professionals, and to patient groups.