Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert Johnson Williams, DRUG ABUSE COUNSELOR

Addiction (Substance Use Disorder) Counselor in Los Angeles, CA · enumerated 2007 · practices at American Drug Recovery Program Inc..

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

National Provider Identifier

1841487022

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Registry record

Entity type Individual (Type 1)

Name Robert Johnson Williams

Credential DRUG ABUSE COUNSELOR

Sex Male

Practice address 2724 W Florence Ave, Los Angeles, CA, 90043

Phone (323) 759-3464

Fax (323) 759-3427

Enumeration date Oct 1, 2007

Last updated in NPPES Oct 1, 2007

Taxonomy & licenses

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

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 Robert Williams's NPI record?

Cross-check NPI 1841487022 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1841487022 active?

Yes, as of the latest NPPES snapshot, NPI 1841487022 is active (record last updated 2007-10-01).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-01.