About Our Medical Directors
Charles W. Cummings, M.D.
Executive Medical Director
Though he stepped down as director of otolaryngology–head and neck surgery at The Johns Hopkins Hospital after more than a decade, Dr. Cummings remains a Distinguished Service Professor at Johns Hopkins and still cares for patients.
He has written more than 125 scientific papers and is senior editor of Otolaryngology-Head and Neck Surgery, in its fourth edition. He has co-authored surgical atlases on laryngeal surgery and surgical access and reconstruction.
Dr. Cummings has also served as director of the American Board of Otolaryngology, plus chairman of the Residency Review Committee and of the Advisory Council for Otolaryngology to the American College of Surgeons. He was chief of staff of The Johns Hopkins Hospital from 1997 to 1999 and serves on the board of directors of Johns Hopkins Medicine.
George H. Sack, Jr., M.D.
Medical Director
Dr. Sack is Medical Director for Johns Hopkins USA. His clinical activities involve periodic health assessments and the evaluation of complex diagnostic questions. He also has medical oversight responsibility for the Johns Hopkins affiliated Outpatient Clinic at Tokyo Midtown Medicine in Japan.
Dr. Sack is an Associate Professor of Medicine and Biological Chemistry in the Johns Hopkins School of Medicine. He graduated from the Johns Hopkins Medical School with an M.D. and later received a Ph.D. in Molecular Biology. He completed his Internal Medicine Residency on the Osler Medical Service of the Johns Hopkins Hospital where he also was a postdoctoral fellow in Medical Genetics. He is a founding fellow of the American College of Medical Genetics and is Board Certified in Clinical Genetics. He is a member of numerous professional societies including the American Association for the Advancement of science and the International Society of Amyloidosis. His research interests include studies of human amyloid genes, clinical amyloidosis and the application of molecular techniques to the study of human pathophysiology. He is the author of over 100 publications and two textbooks, the most recent – USMLE Genetics – was published in 2008.
