Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Diana C Medgyesy, MD

Medical Oncology Physician in Fort Collins, CO · enumerated 2006.

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

National Provider Identifier

1083660708

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Registry record

Entity type Individual (Type 1)

Name Dr. Diana C Medgyesy

Credential MD

Sex Female

Practice address 2121 E Harmony Rd, Suite 170, Fort Collins, CO, 80528

Phone (970) 493-6337

Fax (970) 493-3528

Enumeration date May 25, 2006

Last updated in NPPES Mar 30, 2016

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 38494 (CO) Secondary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License DR.0038494 (CO) Primary

207RH0000X Hematology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License DR.0038494 (CO) 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
83679561	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

What is the NPI number for Diana Medgyesy?

The National Provider Identifier (NPI) for Diana Medgyesy is 1083660708, a Type 1 (individual) record in the CMS NPPES registry.

Where does Diana Medgyesy practice?

The practice location on file with NPPES is in Fort Collins, CO. 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 2016-03-30.