Calvin B. Johnson, M.D. is President of Serves on Board of Directors for: ASHLIN Management Group, a provider of customized learning management solutions, technical assistance, and program and organizational change management services to the government and private sectors. As President, Dr. Johnson has general responsibility for operational oversight and business growth and development.

He is the former Executive Vice President and Chief Medical Officer for Corizon Health, the largest provider of correctional health care in the United States, with operations in 27 states. In that role, he was responsible for ensuring quality and safety in all aspects of patient care and overseeing a clinical operation that included nearly 1,300 physicians, physician assistants, and nurse practitioners caring for more than 300,000 incarcerated individuals.

Johnson graduated from Morehouse College, with a degree in Chemistry. He earned his Medical Degree from the Johns Hopkins University School of Medicine and a Master of Public Health degree from the Johns Hopkins University Bloomberg School of Public Health.