Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Dianne C Martin, MD

Infectious Disease Physician in Fremont, CA · enumerated 2006.

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

National Provider Identifier

1720162969

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Dianne C Martin

Credential MD

Sex Female

Practice address Fremont, CA, 94538

Phone (510) 248-1585

Fax (510) 739-1050

Enumeration date Oct 24, 2006

Last updated in NPPES Jan 29, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License G045774 (CA) Secondary

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License G45774 (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
G045774	Other	CA	STATE OF CALIFORNIA

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Dianne Martin practice?

The practice location on file with NPPES is in Fremont, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Dianne Martin?

The National Provider Identifier (NPI) for Dianne Martin is 1720162969, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Nancy Stoll Family Medicine Physician · Fremont, CA NPI 1235186008

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-01-29.