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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).

Patient Reviews

Patient comments (5)

The overall average patient rating of Dr. William Pfeffer, Reproductive Endocrinologist, Endocrinologist is Good. Dr. Pfeffer has been reviewed by 8 patients who have provided 5 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 3.9
Promptness 4.2
Courteous Staff 3.9
Accurate Diagnosis 4.1
Bedside Manner 4.1
Spends Time with Me 4.1
Follows Up After Visit 5.0

Specialties & Research

Dr. William Pfeffer, MD is board certified in Reproductive Endocrinology.

  • He has special expertise in 6 areas:
  • Endometriosis
  • Hot Flashes
  • In Vitro Fertilization (IVF)
  • Infertility
  • Menopause
  • Polycystic Ovary Syndrome (PCOS)

Education & Awards

Dr. Pfeffer graduated from University of Pennsylvania , Philadelphia. He has 3 awards.

Top Docs: Philadelphia Magazine
TOP DOC - Philadelphia Magazine
Patients' Choice Award (2008 - 2009)


Dr. Pfeffer has 23 hospital affiliations:

  • Bryn Mawr Rehabilitation Hospital 
  • Main Line Hospital - Bryn Mawr 

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Additional Information
Dr. William H Pfeffer MD is a male Reproductive Endorinologist, has 37 years of experience and practices in Reproductive Endocrinology.
Where does Dr. William H. Pfeffer practice?
Dr. William Pfeffer has 6 office locations.
Dr. William Pfeffer practices Reproductive Endocrinology near Paoli, PA.
Additional practice locations include: West Chester, PA and Bryn Mawr, PA.
See Paoli Obstetricians & Gynecologists.