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

Alex W. Tom, D.D.S.

Q: What is the NPI number for Alex Tom?

The National Provider Identifier (NPI) for Alex Tom is 1851311732, a Type 1 (individual) record in the CMS NPPES registry.

Periodontics in Los Gatos, CA · enumerated 2006.

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

National Provider Identifier

1851311732

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Registry record

Entity type Individual (Type 1)

Name Alex W. Tom

Credential D.D.S.

Sex Male

Practice address Los Gatos, CA, 95032

Phone (408) 356-8101

Fax (408) 356-3831

Enumeration date Jul 20, 2006

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

1223P0300X Periodontics Dental Providers · License 38613 (CA) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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 is the NPI number for Alex Tom?

The National Provider Identifier (NPI) for Alex Tom is 1851311732, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alex Tom practice?

The practice location on file with NPPES is in Los Gatos, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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