Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nicholas Harreld Anton, MD

Internal Medicine Physician in Santa Rosa, CA · enumerated 2005.

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

National Provider Identifier

1659364933

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Nicholas Harreld Anton

Credential MD

Sex Male

Practice address 500 Doyle Park Dr, Ste G03, Santa Rosa, CA, 95405

Phone (707) 544-3411

Fax (707) 544-0834

Enumeration date Aug 23, 2005

Last updated in NPPES Jul 16, 2009

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License C36268 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00C362680	Other	-	BLUE SHIELD OF CALIFORNIA
P00410327	Other	-	RAILROAD MEDICARE
00C362680	Medicaid	CA	-

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

Where does Nicholas Anton practice?

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

What is the NPI number for Nicholas Anton?

The National Provider Identifier (NPI) for Nicholas Anton is 1659364933, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-16.