Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Hal F. Martens, D.O., Plc

Rheumatology Physician in Flint, MI · enumerated 2006 · authorized official Hal Martens, Owner.

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

National Provider Identifier

1649228842

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Registry record

Entity type Organization (Type 2)

Legal business name Hal F. Martens, D.O., Plc

Practice address G3535 Beecher Rd, Suite C, Flint, MI, 48532

Phone (810) 249-0140

Fax (810) 249-0142

Enumeration date May 4, 2006

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 5101009406 (MI) Primary

Authorized official

Name Hal Martens

Title Owner

Phone (810) 249-0140

Other identifiers

Identifier	Type	State	Issuer
2755570	Medicaid	MI	-

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 is Hal F. Martens, D.O., Plc located?

The practice location on file with NPPES is in Flint, MI.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.