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 Riordan:
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- Currently 4 of 4 stars
The overall average patient rating of Dr. John Riordan is Excellent.
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Specialties & Research
Dr. John Riordan, MD is board certified in Nephrology.
Education & Awards
Dr. Riordan graduated from The University of Texas at Galveston. He has 1 awards.
Dr. Riordan has 6 hospital affiliations:
- California Pacific Medical Center - Davies Campus
- St. Luke`s Campus
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- Additional Information
- Where does Dr. John W. Riordan practice?
Dr. John Riordan practices Nephrology near San Francisco, CA.
See San Francisco Nephrologists.