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License & Identifications

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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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (5)

The overall average patient rating of Dr. William Greer is Good. Dr. Greer has been reviewed by 24 patients who have provided 5 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 4.2
Promptness 4.0
Courteous Staff 4.8
Accurate Diagnosis 4.5
Bedside Manner 4.6
Spends Time with Me 4.4
Follows Up After Visit 3.8

Specialties & Research

Dr. William Greer, MD is board certified in Internal Medicine.

Education & Awards

Dr. Greer graduated from University of Pennsylvania , Philadelphia. He has 6 awards.

'Top Docs' Philadelphia Magazine 2002, Main Line Health
Castle Connolly's Top Doctors™ (2012 - 2013)
Patients' Choice Award (2009 - 2011, 2015)
Compassionate Doctor Recognition (2009 - 2011, 2015)
Bridges to Excellence Recognition
Bridges to Excellence Medical Home Recognition (2015 - 2018)
Level III
NCQA Physician Practice Connections - Patient Centered Medical Home (2015 - 2018)


Dr. Greer has 9 hospital affiliations:

  • Bryn Mawr Rehabilitation Hospital 
  • Pennsylvania Hospital University PA Health System 

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Additional Information
Dr. William Robson Greer MD is a male Internist, has 19 years of experience and practices in Internal Medicine.
Where does Dr. William R. Greer practice?
Dr. William Greer has 1 office location.
Dr. William Greer practices Internal Medicine near Paoli, PA.
See Paoli Internists.