Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marlon Thornton, LMHC-P, CASAC

Addiction (Substance Use Disorder) Counselor in Niagara Falls, NY · enumerated 2006.

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

National Provider Identifier

1225101181

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Registry record

Entity type Individual (Type 1)

Name Marlon Thornton

Credential LMHC-P, CASAC

Sex Male

Practice address 800 Main St, Suite 2a, Niagara Falls, NY, 14301

Phone (716) 282-1228

Fax (716) 282-1238

Enumeration date Nov 16, 2006

Last updated in NPPES Oct 28, 2014

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 19197 (NY) Primary

Other identifiers

Identifier	Type	State	Issuer
19197	Other	NY	CASAC-T

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 1225101181 active?

Yes, as of the latest NPPES snapshot, NPI 1225101181 is active (record last updated 2014-10-28).

How do I verify Marlon Thornton's NPI record?

Cross-check NPI 1225101181 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 2014-10-28.