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

Dr. Deirdre Jean Holsinger, D.S.S, P.C.

General Practice Dentistry in Bay City, MI · enumerated 2006.

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

National Provider Identifier

1508875204

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Registry record

Entity type Individual (Type 1)

Name Dr. Deirdre Jean Holsinger

Credential D.S.S, P.C.

Sex Female

Practice address Bay City, MI, 48706

Phone (989) 686-0580

Fax (989) 686-6846

Enumeration date Aug 5, 2006

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 18206 (MI) Primary

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 Deirdre Holsinger?

The National Provider Identifier (NPI) for Deirdre Holsinger is 1508875204, a Type 1 (individual) record in the CMS NPPES registry.

Where does Deirdre Holsinger practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.