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Obstetrician & Gynecologist (OB/GYN)
35 years of experience
Accepting new patients
Video profile
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. John Pfeffer is Good. Dr. Pfeffer has been reviewed by 19 patients who have provided 5 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 4.4
Promptness 4.0
Courteous Staff 4.3
Accurate Diagnosis 4.1
Bedside Manner 4.0
Spends Time with Me 4.0
Follows Up After Visit 3.8

Specialties & Research

Dr. John Pfeffer, FACOG, FACS, MD is board certified in Obstetrics & Gynecology.

  • He has special expertise in 17 areas:
  • Colposcopy
  • Contraception
  • Endometriosis
  • Gestational Diabetes
  • Hot Flashes
  • Hysterectomy (Uterus)
  • Infertility
  • Inflammation of the Vulva and Vagina (Vulvovaginitis)
  • Menopause
  • Obstetrics
  • Ovarian Cancer
  • Ovarian Cysts
  • Polycystic Ovary Syndrome (PCOS)
  • Postpartum Depression
  • Urinary Incontinence
  • Uterine Cancer
  • Uterine Cervical Dysplasia

Education & Awards

Dr. Pfeffer graduated from University of Iowa, Iowa City. He has 1 awards.

Patients' Choice Award (2010 - 2011, 2013 - 2014)


Dr. Pfeffer has 7 hospital affiliations:

  • Doctors Hospital of Manteca 
  • Stanislaus Surgical Hospital 


  • English
  • Spanish

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Additional Information
Dr. John Charles Pfeffer FACOG, FACS, and MD is a male Obstetrician & Gynecologist, has 35 years of experience and practices in Obstetrics & Gynecology.
Where does Dr. John C. Pfeffer practice?
Dr. John Pfeffer has 1 office location.
Dr. John Pfeffer practices Obstetrics & Gynecology near Modesto, CA.
See Modesto Obstetricians & Gynecologists.