Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Tom Stuart Tillotson, LCSW

Social Worker in Martinez, CA · enumerated 2006.

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

National Provider Identifier

1275500860

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. Tom Stuart Tillotson

Credential LCSW

Sex Male

Practice address 150 Muir Rd, Veterans Affairs Northern California Healthcare S102, Martinez, CA, 94553

Phone (925) 370-4726

Fax (925) 370-4827

Enumeration date Mar 2, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License LCS20110 (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

What specialty is Tom Tillotson?

Tom Tillotson is registered in NPPES with the primary taxonomy of Social Worker. 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.

Other providers at this practice address

Browse all →

Joon-Ha Ok Urology Physician · Martinez, CA NPI 1336120088 Christine Leyba Psychiatry Physician · Martinez, CA NPI 1740262872 Ivan Meadows Anatomic Pathology & Clinical Pathology Physician · Martinez, CA NPI 1801878848 Kathleen Clancy Adult Health Nurse Practitioner · Martinez, CA NPI 1497737977 Jonathan Segal Nephrology Physician · Martinez, CA NPI 1780666164 Gerhard Heinrich Internal Medicine Physician · Martinez, CA NPI 1306828728 Susan Valley Specialist · Martinez, CA NPI 1225011497 Dennis Beckley Specialist · Martinez, CA NPI 1437132560

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.