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

John Errol Mcmillan, MD

Emergency Medicine Physician in Deridder, LA · enumerated 2006.

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

National Provider Identifier

1114024239

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Registry record

Entity type Individual (Type 1)

Name John Errol Mcmillan

Credential MD

Sex Male

Practice address Deridder, LA, 70634

Phone (800) 893-9698

Enumeration date Sep 20, 2006

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 016246 (LA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

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.

What specialty is John Mcmillan?

John Mcmillan is registered in NPPES with the primary taxonomy of Emergency Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Hospital Service District No 2 of Parish of Beauregard State of La Rural Acute Care Hospital · Deridder, LA NPI 1831193499 Beauregard - Vernon Mri LLC Physiological Laboratory · Deridder, LA NPI 1255330882 Beauregard Memorial Home Health Home Health Agency · Deridder, LA NPI 1427031582 Hospital Service District No 2 of Parish of Beauregard State of La Medicare Defined Swing Bed Hospital Unit · Deridder, LA NPI 1891750907 Beauregard Memorial Hospital Emergency Room Physicians Rural Acute Care Hospital · Deridder, LA NPI 1265632699 Beauregard Memorial Hospital Medical Staff Services Multi-Specialty Clinic/Center · Deridder, LA NPI 1801087184 Beauregard Emergency Group LLC Emergency Medicine Physician · Deridder, LA NPI 1699934570 Beauregard Physician Group, LLC Podiatric Clinic/Center · Deridder, LA NPI 1780814756

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.