Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Rosario Fatima Martinez, DDS

General Practice Dentistry in Menlo Park, CA · enumerated 2007.

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

National Provider Identifier

1336265636

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Registry record

Entity type Individual (Type 1)

Name Rosario Fatima Martinez

Credential DDS

Sex Female

Practice address 3379 Middlefield Road, Menlo Park, CA, 94025

Phone (650) 780-9838

Fax (650) 780-9989

Enumeration date Mar 21, 2007

Last updated in NPPES Aug 7, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 45319 (CA) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier	Type	State	Issuer
G9259801	Other	-	MEDICAL DENTAL PROVIDER #

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

What is the NPI number for Rosario Martinez?

The National Provider Identifier (NPI) for Rosario Martinez is 1336265636, a Type 1 (individual) record in the CMS NPPES registry.

Where does Rosario Martinez practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-08-07.