Doctor profile · Federal record

Dr. Diana Medgyesy, MD

Medical Oncology Physician (CMS: Medical Oncology) · Specialist · Hematology (Internal Medicine) Physician · Fort Collins, CO

  • NPI 1083660708
  • Accepts Medicare
  • 35 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
2121 E Harmony RD, Suite 170
Fort Collins, CO 805283400
(970) 493-6337
fax (970) 493-3528

Credentials & registration

NPPES · NUCC
NPI registered
May 2006 — 20 yrs on file
Profile last updated
March 30, 2016
Year of graduation
1991 — 35 yrs since
Specialty taxonomy
207RX0202X — NUCC code
State licenses (2)
Colorado #DR.0038494 · Colorado #38494
Medicaid
CO #83679561

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1083660708. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
277
Distinct HCPCS
6
Medicare allowed
$28,878
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 84 52 $80
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 65 45 $119
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 47 46 $175
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 33 32 $131
G0316 Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th 30 24 $31
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 18 15 $50

In context: peer comparison

Among 3 peers in this city , average services per provider: 94. This provider delivers 2.9× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
394
Patients
112
Total drug cost
$378,273
Drug Type Claims Patients Total cost
Anastrozole Generic 169 70 $5,326
Letrozole Generic 72 27 $2,060
Tamoxifen Citrate Generic 39 15 $1,050
Alendronate Sodium Generic 26 0 $316
Ibrance (Palbociclib) Brand 20 0 $345,078
Xarelto (Rivaroxaban) Brand 19 0 $17,865
Exemestane Generic 18 0 $6,042
Gabapentin Generic 17 0 $241
Potassium Chloride Generic 14 0 $295

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Diana Medgyesy's medical specialty?
Dr. Diana Medgyesy practices Medical Oncology Physician in Fort Collins, CO.
Where does Dr. Diana Medgyesy practice?
Dr. Diana Medgyesy practices at 2121 E Harmony RD, Fort Collins, CO 805283400. Office phone: 9704936337.
What is Dr. Diana Medgyesy's NPI?
Dr. Diana Medgyesy's National Provider Identifier (NPI) is 1083660708, issued by NPPES.
Does Dr. Diana Medgyesy accept Medicare assignment?
Yes. Dr. Diana Medgyesy accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Diana Medgyesy commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.