Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Aidan Guthridge, PHARMD

Oncology Pharmacist in Billings, MT · enumerated 2021.

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

National Provider Identifier

1609536804

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Registry record

Entity type Individual (Type 1)

Name Dr. Aidan Guthridge

Credential PHARMD

Sex Male

Practice address 1315 Golden Valley Cir, Billings, MT, 59102

Phone (406) 238-6679

Fax (406) 238-6980

Enumeration date Dec 29, 2021

Last updated in NPPES Dec 29, 2021

Taxonomy & licenses

1835X0200X Oncology Pharmacist Pharmacy Service Providers · License 6019 (MT) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Aidan Guthridge?

The National Provider Identifier (NPI) for Aidan Guthridge is 1609536804, a Type 1 (individual) record in the CMS NPPES registry.

Where does Aidan Guthridge practice?

The practice location on file with NPPES is in Billings, MT. 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 2021-12-29.