NPI Portal NPI Lookup & Verification

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

Dr. Martin Alan Feldman, D.O.

Family Medicine Physician in Phoenix, AZ · enumerated 2005.

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

National Provider Identifier

1740272921

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Registry record

Entity type Individual (Type 1)
Name Dr. Martin Alan Feldman
Credential D.O.
Sex Male
Practice address Phoenix, AZ, 85022
Phone (602) 230-7373
Fax (602) 218-6383
Enumeration date Aug 16, 2005
Last updated in NPPES Nov 18, 2021

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

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 2104 (AZ) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
860676047 Other AZ TAX ID
1072107 Other AZ CIGNA
4240133 Other AZ AETNA
AZ0062880 Other AZ BCBS OF AZ
22072104 Other AZ ICA
0179654 Other AZ DEPT OF LABOR & INDUSTRIE
1Z8791 Other AZ HEALTHNET
265711 Medicaid AZ -

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 Martin Feldman practice?
The practice location on file with NPPES is in Phoenix, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Martin Feldman?
The National Provider Identifier (NPI) for Martin Feldman is 1740272921, 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 2021-11-18.