Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ann Marie Collier, MD

Neurology Physician in Billings, MT · enumerated 2009.

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

National Provider Identifier

1487898458

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Registry record

Entity type Individual (Type 1)

Name Dr. Ann Marie Collier

Credential MD

Sex Female

Practice address 801 N 29th St, Billings, MT, 59101

Phone (406) 238-2500

Enumeration date Apr 21, 2009

Last updated in NPPES Jun 15, 2026

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 01091446AA (IN) Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 33458 (MT) Primary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 69467 (TN) Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 0101279598 (VA) Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 2023-02929 (NC) Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 32262 (MS) Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 2023048947 (MO) Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 97144 (GA) Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License ME165841 (FL) Secondary

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

What specialty is Ann Collier?

Ann Collier is registered in NPPES with the primary taxonomy of Neurology 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.

Other providers at this practice address

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Linda Dupree Physician Assistant · Billings, MT NPI 1073516167 Luis Alvarez Clinical Cardiac Electrophysiology Physician · Billings, MT NPI 1417951922 Dennis Obrien Neurology Physician · Billings, MT NPI 1811981699 Jodee Macdonald Etchart Medical Physician Assistant · Billings, MT NPI 1568456044 Brooke Yates Physician Assistant · Billings, MT NPI 1215921838 Emily Colson Family Medicine Physician · Billings, MT NPI 1952397929 Richard Leblond Internal Medicine Physician · Billings, MT NPI 1184612715 Lawrence Zyskowski Rheumatology Physician · Billings, MT NPI 1841289410

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-15.