Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Michael Martyn, M.ED., L.A.C., N.C.C

Addiction (Substance Use Disorder) Counselor in Terrytown, LA · enumerated 2012.

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

National Provider Identifier

1225300742

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Registry record

Entity type Individual (Type 1)

Name William Michael Martyn

Credential M.ED., L.A.C., N.C.C

Sex Male

Practice address 1799 Stumpf Blvd Bldg 7, Terrytown, LA, 70056

Phone (504) 367-4426

Enumeration date Jan 30, 2012

Last updated in NPPES Jan 30, 2012

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 1398 (LA) Primary

LAC · Licensed Acupuncturist: A practitioner licensed to perform acupuncture. About the LAC 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.

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Frequently asked questions

How do I verify William Martyn's NPI record?

Cross-check NPI 1225300742 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1225300742 active?

Yes, as of the latest NPPES snapshot, NPI 1225300742 is active (record last updated 2012-01-30).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-01-30.