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

Tammy M Gagnon, MSW, LICSW

Q: What is the NPI number for Tammy Gagnon?

The National Provider Identifier (NPI) for Tammy Gagnon is 1013408681, a Type 1 (individual) record in the CMS NPPES registry.

Clinical Social Worker in Mankato, MN · enumerated 2018 · practices at Addiction Recovery Technologies, Inc..

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

National Provider Identifier

1013408681

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Registry record

Entity type Individual (Type 1)

Name Tammy M Gagnon

Credential MSW, LICSW

Sex Female

Practice address Mankato, MN, 56001

Phone (507) 385-8774

Fax (507) 345-1895

Enumeration date May 19, 2018

Last updated in NPPES Sep 29, 2026

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 22386 (MN) 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 Tammy Gagnon practice?

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

What is the NPI number for Tammy Gagnon?

The National Provider Identifier (NPI) for Tammy Gagnon is 1013408681, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Michael Mcginnis Addiction (Substance Use Disorder) Counselor · Mankato, MN NPI 1588017206 Addiction Recovery Technologies, Inc. Mental Health Clinic/Center (Including Community Mental Health Center) · Mankato, MN NPI 1346782265 Nicole Lewis Addiction (Substance Use Disorder) Counselor · Mankato, MN NPI 1730018078 Ann Lacourse Addiction (Substance Use Disorder) Counselor · Mankato, MN NPI 1306775127 Lathon Rogge Addiction (Substance Use Disorder) Counselor · Mankato, MN NPI 1134059314 Kara Will Addiction (Substance Use Disorder) Counselor · Mankato, MN NPI 1386574564 Lauren Mareck Addiction (Substance Use Disorder) Counselor · Mankato, MN NPI 1245161652 Kylee Rowen Addiction (Substance Use Disorder) Counselor · Mankato, MN NPI 1629909080

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-09-29.