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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. John McMahon:

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  1. Qualifications
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Patient Reviews

Patient comments (2)

The overall average patient rating of Dr. John McMahon is Excellent. Dr. McMahon has been reviewed by 6 patients who have provided 2 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.0
Promptness 3.3
Courteous Staff 4.3
Accurate Diagnosis 4.3
Bedside Manner 4.7
Spends Time with Me 4.7
Follows Up After Visit 4.0

Specialties & Research

Dr. John McMahon, MD is board certified in Obstetrics & Gynecology.

  • He has special expertise in 2 areas:
  • Hot Flashes
  • Menopause

Education & Awards

Dr. McMahon graduated from University of Washington, Seattle. He has 2 awards.

Compassionate Doctor Recognition (2014)
Top 10 Doctor - State (2014)
Obstetrician & Gynecologist


Dr. McMahon has 1 hospital affiliations:

  • St. Francis Medical Center 

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Additional Information
Dr. John William McMahon MD is a male Obstetrician & Gynecologist, has 28 years of experience and practices in Obstetrics & Gynecology.
Where does Dr. John W. McMahon practice?
Dr. John McMahon has 1 office location.
Dr. John McMahon practices Obstetrics & Gynecology near Helena, MT.
See Helena Obstetricians & Gynecologists.