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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The overall average patient rating of Dr. John Mason is Poor.
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.