Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Catherine S Zimmerman, D.O.

Family Medicine Physician in Cheboygan, MI · enumerated 2006 · practices at Alcona Citizens for Health, Inc.

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

National Provider Identifier

1891711370

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Registry record

Entity type Individual (Type 1)

Name Dr. Catherine S Zimmerman

Credential D.O.

Sex Female

Practice address 740 S Main St Fl 2, Cheboygan, MI, 49721

Phone (231) 627-7118

Fax (231) 627-1838

Enumeration date Jul 15, 2006

Last updated in NPPES Feb 9, 2021

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 5101009396 (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
0151600485	Other	MI	INDIVIDUAL BLUE CROSS
700A610010	Other	MI	GROUP BLUE CROSS
2846906	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

How do I verify Catherine Zimmerman's NPI record?

Cross-check NPI 1891711370 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1891711370 active?

Yes, as of the latest NPPES snapshot, NPI 1891711370 is active (record last updated 2021-02-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-09.