Early career at the National Cancer Institute's Baltimore Cancer Research Center developing new approaches to infection prevention and treatment of leukemia and lymphoma patients. Then the head of infectious diseases and director of the University of Maryland Cancer Center followed by senior leadership positions in the Medical School and Medical System culminating as CEO of the University of Maryland Medical Center. Now the author of 7 books on health and wellness, our dysfunctional healthcare delivery system & the crisis in primary care. Lover of nature. Happily married for 58 years.