Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Rachel Christine Brennan, MD

Pediatric Hematology & Oncology Physician in Kalispell, MT · enumerated 2006.

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

National Provider Identifier

1982760989

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Registry record

Entity type Individual (Type 1)

Name Rachel Christine Brennan

Credential MD

Sex Female

Practice address 202 Conway Dr Ste 200, Kalispell, MT, 59901

Phone (406) 758-7490

Fax (406) 758-7080

Enumeration date Dec 28, 2006

Last updated in NPPES Feb 19, 2024

Taxonomy & licenses

2080P0207X Pediatric Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 43751 (TN) Secondary

2080P0207X Pediatric Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License MED-PHYS-LIC-112707 (MT) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License P20019 (MD) 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

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 Rachel Brennan?

Rachel Brennan is registered in NPPES with the primary taxonomy of Pediatric Hematology & Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-19.