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Dr. John J Martin, MD

Urology Physician in San Diego, CA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1023121969

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Registry record

Entity type Individual (Type 1)
Name Dr. John J Martin
Credential MD
Sex Male
Practice address 4060 4th Ave, Suite 310, San Diego, CA, 92103
Phone (619) 297-4707
Fax (619) 297-2448
Enumeration date Aug 16, 2006
Last updated in NPPES Apr 2, 2013

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License G24101 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
BN261X Other CA MEDICARE PTAN FOR GHP

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does John Martin practice?
The practice location on file with NPPES is in San Diego, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Martin?
The National Provider Identifier (NPI) for John Martin is 1023121969, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-02.