Daniel Callan, D.O.’76, M.P.H., FACOFP, retired as a captain in the U.S. Navy after 32 years of military service. He is board-certified in family practice, aerospace medicine and occupational medicine and a medical fellow in all three areas. He has a civilian medical practice in Tennessee.
Daniel Callan, D.O.’76, M.P.H., FACOFP
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Jun 1, 2020 | Updated Jun 1, 2020