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

Dr. Heidi S. Mcmillan, MD

Pediatrics Physician in Durango, CO · enumerated 2006.

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

National Provider Identifier

1457371742

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Registry record

Entity type Individual (Type 1)

Name Dr. Heidi S. Mcmillan

Credential MD

Sex Female

Practice address Durango, CO, 81301

Phone (970) 335-2342

Fax (970) 335-2438

Enumeration date Jul 20, 2006

Last updated in NPPES Feb 9, 2026

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

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 50159 (CO) 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
9631177	Other	-	CIGNA
12-00960	Other	-	UNITED HEALTHCARE
107040638101	Other	UT	SELECT HEALTH
590424112000001	Other	-	BLUE CROSS
85592	Other	UT	PEHP

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 Heidi Mcmillan's NPI record?

Cross-check NPI 1457371742 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1457371742 active?

Yes, as of the latest NPPES snapshot, NPI 1457371742 is active (record last updated 2026-02-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-09.