Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Oliver James Oatman, DO

Pediatric Endocrinology Physician in Phoenix, AZ · enumerated 2008.

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

National Provider Identifier

1780857268

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Registry record

Entity type Individual (Type 1)

Name Oliver James Oatman

Credential DO

Sex Male

Practice address 1920 E Cambridge Ave Ste 301, Phoenix, AZ, 85006

Phone (602) 933-0935

Fax (602) 933-2471

Enumeration date Apr 7, 2008

Last updated in NPPES Mar 26, 2018

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 6354 (AZ) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

2080P0205X Pediatric Endocrinology Physician Allopathic & Osteopathic Physicians · License 6354 (AZ) Primary

DO — Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

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Frequently asked questions

How do I verify Oliver Oatman's NPI record?

Cross-check NPI 1780857268 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1780857268 active?

Yes — as of the latest NPPES snapshot, NPI 1780857268 is active (record last updated 2018-03-26).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-26.