Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Christopher Mcmillan, M.D.

Diagnostic Radiology Physician in Texarkana, TX · enumerated 2005.

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

National Provider Identifier

1578564118

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Registry record

Entity type Individual (Type 1)

Name Dr. Christopher Mcmillan

Credential M.D.

Sex Male

Practice address 5508 Summerhill Rd, Texarkana, TX, 75503

Phone (903) 792-1292

Fax (903) 792-2051

Enumeration date Aug 4, 2005

Last updated in NPPES Jul 11, 2022

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License L4056 (TX) 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
152365601	Medicaid	TX	-
300133926	Other	TX	RAILROAD MEDICARE
148160001	Medicaid	AR	-

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 Christopher Mcmillan's NPI record?

Cross-check NPI 1578564118 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1578564118 active?

Yes, as of the latest NPPES snapshot, NPI 1578564118 is active (record last updated 2022-07-11).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-11.