Saher Rizvi, MD

Shabina Roohi Ahmed, MD, is a highly-rated endocrinologist practicing at Johns Hopkins Community Physicians in Downtown Bethesda, specializing in gender-affirming hormone therapy, diabetes, and various endocrine disorders. With extensive education from Johns Hopkins University School of Medicine, she holds the position of Medical Director and Assistant Professor of Medicine. Dr. Ahmed's commitment to patient care is reflected in her impressive rating of 4.9 out of 5 stars based on patient feedback, showcasing her reputation for providing quality treatment to adolescents and adults alike. Her involvement in research and presentations at prestigious conferences adds to her distinguished profile in the field of endocrinology. Generated from the website

Carolyn K. Wang, D.O., is the medical director of neurology for Johns Hopkins Community Physicians (JHCP), where she serves as a neurologist. Dr. Wang cares for patients at her out-patient clinics in Downtown Bethesda and Sibley Memorial Hospital, and is also affiliated with Suburban Hospital. She provides electroencephalogram (EEG) services at both Sibley and Suburban. Dr. Wang earned her Doctor of Osteopathic Medicine degree from New York College of Osteopathic Medicine. She completed an internship in internal medicine through the Johns Hopkins University School of Medicine program at Sinai Hospital, followed by a residency in neurology and a fellowship in sleep medicine at George Washington University Hospital. Dr. Wang previously served as the chair for the Section of Neurology at Suburban Hospital, as well as the medical director of Suburban's Sleep Disorders Center. Dr. Wang is a member of the American Academy of Neurology and the American Academy of Sleep Medicine. She is also a member of the JHCP Credentialing Committee and Practice Standards, as well as the Johns Hopkins Medicine Sleep Services Steering Committee. Dr. Wang has been named a Top Doctor in Neurology by Washingtonian Magazine. Dr. Wang has contributed to numerous publications and presentations on sleep medicine topics.

Mary Callsen, M.D., practices internal medicine at Johns Hopkins Community Physicians Downtown Bethesda. She received her medical degree from The Ohio State University College of Medicine, and completed her residency in internal medicine at Brooke Army Medical Center in San Antonio, Texas. In 2014, Washingtonian magazine recognized Dr. Callsen as one of the area’s “Top Doctors.”