Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Joyce Lorraine Ahlheim, L.C.S.W.

Clinical Social Worker in Cupertino, CA · enumerated 2006.

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

National Provider Identifier

1811056799

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Registry record

Entity type Individual (Type 1)

Name Mrs. Joyce Lorraine Ahlheim

Credential L.C.S.W.

Sex Female

Practice address 19000 Homestead Rd Lbby, Cupertino, CA, 95014

Phone (408) 366-4374

Fax (408) 366-4388

Enumeration date Dec 7, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 13503 (CA) Primary

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 1811056799 active?

Yes, as of the latest NPPES snapshot, NPI 1811056799 is active (record last updated 2007-07-08).

How do I verify Joyce Ahlheim's NPI record?

Cross-check NPI 1811056799 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 2007-07-08.