Calvin B. Johnson

Last updated
  1. "Secretary of Health, Calvin B. Johnson, M.D., M.P.H." Commonwealth of Pennsylvania. Archived from the original on 2007-12-27.
  2. 1 2 "Temple University School of Medicine Office of News Communications: Calvin B. Johnson, MD, MPH, Appointed Vice President and Chief Medical Officer for Temple University Health System". Archived from the original on 2010-06-06. Retrieved 2011-01-28.
  3. "Royal Caribbea's new Chief Medical Officer gives health update". Youtube. Archived from the original on 2021-12-20. Retrieved 2020-08-26.
Calvin B. Johnson
24th Secretary of the Pennsylvania Department of Health
In office
April 2003 October 23, 2008