Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Miss Tonya Trezelle Cosey, MSW, LCSW

Mental Health Counselor in Cassopolis, MI · enumerated 2005.

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

National Provider Identifier

1881699593

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Registry record

Entity type Individual (Type 1)

Name Miss Tonya Trezelle Cosey

Credential MSW, LCSW

Sex Female

Practice address 960 E State St, Cassopolis, MI, 49031

Phone (269) 445-2451

Fax (269) 445-3216

Enumeration date Jun 17, 2005

Last updated in NPPES Apr 26, 2022

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 1041C0700X (MI) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Tonya Cosey?

Tonya Cosey is registered in NPPES with the primary taxonomy of Mental Health Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-04-26.