Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Adelaide Mcmahon, LCSW

Clinical Social Worker in Beaumont, CA · enumerated 2014.

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

National Provider Identifier

1649684739

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Adelaide Mcmahon

Credential LCSW

Sex Female

Practice address Beaumont, CA, 92223

Phone (760) 525-9186

Enumeration date Jun 17, 2014

Last updated in NPPES Oct 26, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Primary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW 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

Is NPI 1649684739 active?

Yes, as of the latest NPPES snapshot, NPI 1649684739 is active (record last updated 2022-10-26).

How do I verify Adelaide Mcmahon's NPI record?

Cross-check NPI 1649684739 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-10-26.