Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Patti J Mcmahon, LPC

Mental Health Counselor in Lander, WY · enumerated 2009.

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

National Provider Identifier

1679802656

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Registry record

Entity type Individual (Type 1)

Name Patti J Mcmahon

Credential LPC

Sex Female

Practice address 748 Main St, Lander, WY, 82520

Phone (307) 332-2231

Fax (307) 332-9338

Enumeration date Dec 21, 2009

Last updated in NPPES Dec 21, 2009

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License LPC 361 (WY) Primary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License C1274 (OR) Secondary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC 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

What specialty is Patti Mcmahon?

Patti Mcmahon 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.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-12-21.