Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. James Michael Underwood, D.O.

Pediatrics Physician in Maricopa, AZ · enumerated 2005.

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

National Provider Identifier

1558365957

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Registry record

Entity type Individual (Type 1)

Name Dr. James Michael Underwood

Credential D.O.

Sex Male

Practice address 44572 W Bowlin Rd, Maricopa, AZ, 85138

Phone (520) 568-2316

Fax (520) 568-2316

Enumeration date Jun 13, 2005

Last updated in NPPES May 30, 2018

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License OH34007098 (OH) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 007525 (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

Other identifiers

Identifier	Type	State	Issuer
2137860	Medicaid	OH	-
000000354015	Other	OH	BLUE CROSS BLUE SHIELD PI

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 James Underwood practice?

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

What is the NPI number for James Underwood?

The National Provider Identifier (NPI) for James Underwood is 1558365957, 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 2018-05-30.