Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory A Holzhei, D.O.

Family Medicine Physician in Saint Johns, MI · enumerated 2006.

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

National Provider Identifier

1073585444

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Gregory A Holzhei

Credential D.O.

Sex Male

Practice address 901 S Oakland St, Suite 204, Saint Johns, MI, 48879

Phone (989) 224-2338

Fax (989) 224-2065

Enumeration date Feb 1, 2006

Last updated in NPPES Jan 9, 2012

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 5101013906 (MI) 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
01-01374	Other	MI	PHP
4474532	Medicaid	MI	-
7755233	Other	MI	AETNA/PPOM
080192531	Other	MI	RAILROAD MEDICARE
081900134	Other	MI	BCN
700A910020	Other	MI	BCBS

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 Gregory Holzhei?

The National Provider Identifier (NPI) for Gregory Holzhei is 1073585444, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gregory Holzhei practice?

The practice location on file with NPPES is in Saint Johns, MI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-01-09.