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

Mr. Nathan Eitan, MD

Q: What is the NPI number for Nathan Eitan?

The National Provider Identifier (NPI) for Nathan Eitan is 1609986975, a Type 1 (individual) record in the CMS NPPES registry.

Endocrinology, Diabetes & Metabolism Physician in Whittier, CA · enumerated 2006.

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

National Provider Identifier

1609986975

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Registry record

Entity type Individual (Type 1)

Name Mr. Nathan Eitan

Credential MD

Sex Male

Practice address Whittier, CA, 90605

Phone (562) 945-2833

Fax (562) 945-3883

Enumeration date Aug 30, 2006

Last updated in NPPES Jun 24, 2010

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A36074 (CA) Secondary

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License A36074 (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
00A360740	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 Nathan Eitan practice?

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

What is the NPI number for Nathan Eitan?

The National Provider Identifier (NPI) for Nathan Eitan is 1609986975, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-24.