Gregory McDonald, DO, graduated from the Philadelphia College of Osteopathic Medicine in 1989. He went on to complete a residency in anatomic pathology at the Lankenau Hospital followed by a forensic pathology fellowship at the University of Pennsylvania and the Medical Examiner's office in Philadelphia, Pennsylvania. After completion of this fellowship, he served for 14 years as an assistant medical examiner in Philadelphia, Pennsylvania.

Dr. McDonald currently serves as Dean of the School of Health Sciences and is a professor and chairman of the Department of Forensic Medicine and Pathology at the Philadelphia College of Osteopathic Medicine. His work at PCOM also includes serving as the medical director of the Department of Physician Assistant Studies and the program director of the Master of Science (MS) in Forensic Medicine program. Dr. McDonald lectures extensively to DO, physician assistant and forensic medicine students as well as providing residents and attending physicians with continuing education programs. He has been the recipient of multiple awards for outstanding teaching.

In addition to his teaching duties at PCOM he has lectured regionally and nationally in subjects including post mortem changes, determination of cause and manner of death, blunt and sharp force injury, asphyxiation and child abuse. Dr. McDonald is also the chief deputy coroner of Montgomery County Pennsylvania.

He has served as the Vice Chairman and Chairman of the American Osteopathic Board of Pathology where he also is the Chairman of the subcommittee on Forensic Pathology. Certified in both anatomic pathology and forensic pathology, he has completed more than 8,000 autopsies and has testified in more than 800 court cases.