Bachelor of Science in Education, Tuskegee Institute, Alabama, 1940. Doctor of Medicine, Howard University, 1954. Doctor of Philosophy, Georgetown University, 1961.
Graduate, 1965; Graduate, United States Army War College, 1970. Doctor of Science (honorary), Georgetown University, 1979. Doctor of Science (honorary), University Massachusetts, 1984.
Doctor of Science (honorary), Tuskegee University, 1998. Graduate, United States Army War College, 1970.
Intern United States Public Health Service Hospital, Staten Island, New York, 1954—1955. Resident Georgetown University Hospital, 1956—1960. Practice medicine, specializing in pathology Washington, since 1961.
Instructor pathology Georgetown University, 1960—1961. Professorial lecturer Georgetown University School Medicine, 1970—1973. Assistant professor pathology Howard University College Medicine, 1961—1967, associate professor, 1967—1970, professor, 1970, dean, 1970—1979.
Vice president research Howard University, 1988—1991. Captain United States Army, 1942-1950, brigadier general Reserve United States Army.
Captain Army of the United States, 1942-1950. Brigadier general Reserve. Member Institute Medicine, National Academy Sciences, Alpha Omega Alpha, Sigma Pi Phi.
Married Ruth Maurine Reagin, January 16, 1943. Children: Marion Junior, Judith (Mistress Kenneth Walk).