NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gregory C. Reuter, M.D.

Diagnostic Radiology Physician in Greeley, CO · enumerated 2006.

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

National Provider Identifier

1114907425

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Gregory C. Reuter
Credential M.D.
Sex Male
Practice address 1801 16th St, Greeley, CO, 80631
Fax (720) 874-4462
Enumeration date Jan 20, 2006
Last updated in NPPES Mar 31, 2024

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 105282 (MO) Secondary
2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 60509 (CO) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
100159440D Medicaid KS -
663169 Other CO MEDICARE
111257117 Other KS MEDICARE
3234841A Other MO RAILROAD MEDICARE- INDIV
663196 Other CO MEDICARE
CI2562 Other KS RAILROAD MEDICARE- GROUP
663145 Other CO MEDICARE
NA2517109 Other NE MEDICARE
663203 Other CO MEDICARE
663183 Other CO MEDICARE
NA1214132 Other NE MEDICARE
CI3618 Other MO RAILROAD MEDICARE- GROUP
NA1215133 Other NE MEDICARE
3234841B Other KS RAILROAD MEDICARE- INDIV
663152 Other CO MEDICARE
KA3249108 Other KS MEDICARE

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

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 Gregory Reuter?
Gregory Reuter is registered in NPPES with the primary taxonomy of Diagnostic Radiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-31.