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 Mason:

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Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. John Mason is Poor. Dr. Mason has been reviewed by 1 patients who have provided 0 comments. The rating is 1 out of 5 stars.

Patient Ratings
Accurate Diagnosis 1.0

Education & Awards

Dr. Mason graduated from Georgetown University, Washington.


Dr. Mason has 1 hospital affiliations:

  • St. John's Regional Medical Center 

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Additional Information
Dr. John Keith Mason MD is a male Family Practitioner, has 49 years of experience and practices in Family Medicine.
Where does Dr. John K. Mason practice?
Dr. John Mason has 1 office location.
Dr. John Mason practices Family Medicine near Ventura, CA.
See Ventura Family Physicians.