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. William Greer:
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- Currently 3.5 of 4 stars
The overall average patient rating of Dr. William Greer is Excellent.
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Specialties & Research
Dr. William Greer, MD is board certified in Internal Medicine.
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Education & Awards
Dr. Greer graduated from University of Pennsylvania , Philadelphia. He has 4 awards.
Dr. Greer has 9 hospital affiliations:
- Main Line Hospital - Bryn Mawr
- Pennsylvania Hospital University PA Health System
Accepted Insurance Plans
Dr. Greer accepts these health insurances in at least one office:
- United Healthcare - 14 plans
- Highmark Blue Cross Blue Shield - 5 plans
- Independence Blue Cross - 2 plans
- Oxford Health Plans - 2 plans
- Cigna - 15 plans
- Humana - 6 plans
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- Additional Information
- Where does Dr. William R. Greer practice?
Dr. William Greer practices Internal Medicine near Paoli, PA.
See Paoli Internists.