Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Carl Hilton Williams

Behavior Analyst in Baton Rouge, LA · enumerated 2011.

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

National Provider Identifier

1366719056

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Registry record

Entity type Individual (Type 1)

Name Mr. Carl Hilton Williams

Sex Male

Practice address 1957 N Ardenwood Dr, Apt 6072, Baton Rouge, LA, 70806

Phone (225) 246-2449

Fax (225) 246-2449

Enumeration date Nov 23, 2011

Last updated in NPPES Nov 23, 2011

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 103K00000X (LA) Primary

146N00000X Basic Emergency Medical Technician Emergency Medical Service Providers · License 146N00000X (LA) Secondary

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 Carl Williams?

Carl Williams is registered in NPPES with the primary taxonomy of Behavior Analyst. 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-23.