Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert C Harmon, MD/PHD

Gastroenterology Physician in Montrose, CO · enumerated 2007.

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

National Provider Identifier

1669684643

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Registry record

Entity type Individual (Type 1)

Name Robert C Harmon

Credential MD/PHD

Sex Male

Practice address 3330 S Rio Grande Ave, Montrose, CO, 81401

Phone (970) 497-5979

Fax (970) 497-5983

Enumeration date May 4, 2007

Last updated in NPPES Jun 5, 2026

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License DR.0054570 (CO) Primary

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 0116017619 (VA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 23219 (WV) Secondary

207RI0008X Hepatology Physician Allopathic & Osteopathic Physicians · License 0116017619 (VA) Secondary

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
29105811	Medicaid	CO	-

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 NPI 1669684643 active?

Yes, as of the latest NPPES snapshot, NPI 1669684643 is active (record last updated 2026-06-05).

How do I verify Robert Harmon's NPI record?

Cross-check NPI 1669684643 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Michael Paolucci Gastroenterology Physician · Montrose, CO NPI 1639179500 Justin Tanner Internal Medicine Physician · Montrose, CO NPI 1245436658 Lawrence Tiglao Obstetrics & Gynecology Physician · Montrose, CO NPI 1073837662 Marie Abbinante Nurse Practitioner · Montrose, CO NPI 1295118610 Alpine Women'S Centre at Montrose Memorial Hospital Obstetrics & Gynecology Physician · Montrose, CO NPI 1548644917 Ryan Hagens Pain Medicine (Physical Medicine & Rehabilitation) Physician · Montrose, CO NPI 1073008991 Victoria Oliva Family Nurse Practitioner · Montrose, CO NPI 1801406194 Montrose Memorial Hospital, Inc Pain Medicine (Physical Medicine & Rehabilitation) Physician · Montrose, CO NPI 1649977943

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-05.