Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Martin J Gruenberg, DO

Occupational Medicine Physician in Mesa, AZ · enumerated 2006.

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

National Provider Identifier

1326139247

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Martin J Gruenberg

Credential DO

Sex Male

Practice address 2550 N Thunderbird Cir, Suite 303, Mesa, AZ, 85215

Phone (480) 776-1603

Fax (480) 455-4940

Enumeration date Sep 27, 2006

Last updated in NPPES Apr 5, 2013

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 25MB05665000 (NJ) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 25MB05665000 (NJ) Secondary

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License 4496 (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
8486905	Medicaid	NJ	-

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

Is NPI 1326139247 active?

Yes, as of the latest NPPES snapshot, NPI 1326139247 is active (record last updated 2013-04-05).

How do I verify Martin Gruenberg's NPI record?

Cross-check NPI 1326139247 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Lois Brenneman Family Nurse Practitioner · Mesa, AZ NPI 1013981265 Robert Furman Internal Medicine Physician · Mesa, AZ NPI 1447277900 Tess Charles Physician Assistant · Mesa, AZ NPI 1013196484 Phytcare LLC Physical Medicine & Rehabilitation Physician · Mesa, AZ NPI 1730359498 Jessica Dettra Physician Assistant · Mesa, AZ NPI 1467774554 Mindi Mirgeler Medical Physician Assistant · Mesa, AZ NPI 1437439361 Nextcare Primary Care South Texas Pllc Family Medicine Physician · Mesa, AZ NPI 1578921524

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-05.