Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. John Patrick Callahan, BS

Counselor in Saginaw, MI · enumerated 2007.

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

National Provider Identifier

1609092600

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Registry record

Entity type Individual (Type 1)

Name Mr. John Patrick Callahan

Credential BS

Sex Male

Practice address 1321 S Fayette St, Saginaw, MI, 48602

Phone (989) 792-8000

Fax (989) 792-8445

Enumeration date Apr 18, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers 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.

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Frequently asked questions

What is the NPI number for John Callahan?

The National Provider Identifier (NPI) for John Callahan is 1609092600, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Callahan practice?

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

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