Individual provider · Type 1 NPI

John Stephen Hammes, MD

Nephrology Physician · San Diego, CA

NPI number 1891766994 Active

Practice location

8885 Rio San Diego Dr Ste 212
San Diego, CA 92108-1626

Call (619) 299-2350 Map

Fax (619) 297-8379

Mailing address

9373 Hazard Way Ste 200
San Diego, CA 92123-1226

Specialties and licenses

Taxonomy	Code	License
Nephrology Physician Primary	207RN0300X	G84351 (CA)

Nephrology Physician: An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

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About NPI 1891766994

John Stephen Hammes, MD's National Provider Identifier is 1891766994, issued on Jan 28, 2006. The primary taxonomy on file is Nephrology Physician (207RN0300X), and the practice location is in San Diego, CA. The record was last updated on Aug 19, 2026.