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

Dr. Gregory Allen Riddle, MD

Aerospace Medicine Physician in Grand Forks Afb, ND · enumerated 2006.

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

National Provider Identifier

1043398456

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Registry record

Entity type Individual (Type 1)
Name Dr. Gregory Allen Riddle
Credential MD
Sex Male
Practice address Grand Forks Afb, ND, 58205
Phone (701) 747-5326
Enumeration date Nov 2, 2006
Last updated in NPPES Dec 8, 2025

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

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 19406 (AL) Secondary
2083A0100X Aerospace Medicine Physician Allopathic & Osteopathic Physicians · License 19406 (AL) Primary
207QS0010X Sports Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 19406 (AL) 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 is the NPI number for Gregory Riddle?
The National Provider Identifier (NPI) for Gregory Riddle is 1043398456, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gregory Riddle practice?
The practice location on file with NPPES is in Grand Forks Afb, ND. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-08.