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

Carl Glenn Hagstrom, MSW

Clinical Social Worker in Ann Arbor, MI · enumerated 2017.

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

National Provider Identifier

1720502883

Verified

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Registry record

Entity type Individual (Type 1)

Name Carl Glenn Hagstrom

Credential MSW

Sex Male

Practice address Ann Arbor, MI, 48104

Phone (734) 222-5040

Fax (734) 929-4415

Enumeration date Jul 31, 2017

Last updated in NPPES Jul 31, 2017

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 6801071286 (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

Is NPI 1720502883 active?

Yes, as of the latest NPPES snapshot, NPI 1720502883 is active (record last updated 2017-07-31).

How do I verify Carl Hagstrom's NPI record?

Cross-check NPI 1720502883 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-07-31.