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

Mr. Gary W Watson, MSW

Q: What is the NPI number for Gary Watson?

The National Provider Identifier (NPI) for Gary Watson is 1639425747, a Type 1 (individual) record in the CMS NPPES registry.

Clinical Social Worker in Ada, MI · enumerated 2012.

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

National Provider Identifier

1639425747

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Registry record

Entity type Individual (Type 1)

Name Mr. Gary W Watson

Credential MSW

Sex Male

Practice address Ada, MI, 49301

Phone (616) 914-9874

Fax (616) 825-6007

Enumeration date Jul 25, 2012

Last updated in NPPES Aug 16, 2018

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 6801088218 (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

Where does Gary Watson practice?

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

What is the NPI number for Gary Watson?

The National Provider Identifier (NPI) for Gary Watson is 1639425747, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-08-16.