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Gregory Thomas Armstrong, RPH

Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in John Day, OR · enumerated 2013.

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

National Provider Identifier

1811321078

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Registry record

Entity type Individual (Type 1)
Name Gregory Thomas Armstrong
Credential RPH
Sex Male
Practice address 120 E Main St, John Day, OR, 97845
Phone (541) 575-0629
Fax (541) 575-2342
Enumeration date Aug 23, 2013
Last updated in NPPES Sep 8, 2021

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 7339 (OR) Secondary
1835P0018X Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Pharmacy Service Providers · License RPH-0007339 (OR) Primary
RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH 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 Gregory Armstrong?
The National Provider Identifier (NPI) for Gregory Armstrong is 1811321078, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gregory Armstrong practice?
The practice location on file with NPPES is in John Day, OR. 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 2021-09-08.