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

Dr. Rachael L Armstrong, M.D.

Surgery Physician in Lewiston, ID · enumerated 2011.

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

National Provider Identifier

1366735300

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Registry record

Entity type Individual (Type 1)
Name Dr. Rachael L Armstrong
Credential M.D.
Sex Female
Practice address Lewiston, ID, 83501
Phone (208) 750-7445
Enumeration date May 24, 2011
Last updated in NPPES Jul 21, 2022

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

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 01071766A (IN) Secondary
208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MC-0232 (ID) 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

What is the NPI number for Rachael Armstrong?
The National Provider Identifier (NPI) for Rachael Armstrong is 1366735300, a Type 1 (individual) record in the CMS NPPES registry.
Where does Rachael Armstrong practice?
The practice location on file with NPPES is in Lewiston, ID. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.