NPI Portal NPI Lookup & Verification

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

Dr. Alfonso E Martinez, DDS

General Practice Dentistry in El Monte, CA · enumerated 2007 · practices at Alfonso E. Martinez D.D.S. A Professional Corporation.

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

National Provider Identifier

1326195561

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Alfonso E Martinez
Credential DDS
Sex Male
Practice address El Monte, CA, 91732
Phone (626) 575-7565
Fax (626) 575-0240
Enumeration date Jan 3, 2007
Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 25314 (CA) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

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 Alfonso Martinez practice?
The practice location on file with NPPES is in El Monte, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Alfonso Martinez?
The National Provider Identifier (NPI) for Alfonso Martinez is 1326195561, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

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