Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Donald K Maxwell, DO

Critical Care Medicine (Internal Medicine) Physician in Mesa, AZ · enumerated 2005.

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

National Provider Identifier

1508841560

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Registry record

Entity type Individual (Type 1)

Name Dr. Donald K Maxwell

Credential DO

Sex Male

Practice address 1400 S Dobson Rd, Mesa, AZ, 85202

Phone (480) 412-6042

Fax (480) 412-5235

Enumeration date Dec 13, 2005

Last updated in NPPES Sep 16, 2015

Taxonomy & licenses

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 3821 (AZ) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 3821 (AZ) Secondary

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
736788	Medicaid	AZ	-

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 specialty is Donald Maxwell?

Donald Maxwell is registered in NPPES with the primary taxonomy of Critical Care Medicine (Internal Medicine) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-09-16.