Dr. Gerard J. Diefes graduated from the Hahnemann University School of Medicine in 1992. He works in Philadelphia, PA and 1 other location and specializes in Pulmonary Disease. Dr. Diefes is affiliated with Delaware County Memorial Hospital, Hahnemann University Hospital and Roxborough Memorial Hospital.
Medical School: Hahnemann University School of Medicine; Graduated 1992
*This physician has multiple office locations. See Office Information for details.