A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).
Learn more about Dr. Gregory MacLennan:
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Specialties & Research
Dr. Gregory MacLennan, MD is board certified in Anatomic Pathology, Cytopathology, and Urology.
Education & Awards
Dr. MacLennan graduated from University Of Manitoba Faculty Of Medicine, Winnipeg.
Dr. MacLennan has 5 hospital affiliations:
- University Hospitals Geauga Medical Center
- Uh Richmond Medical Center