Doctor profile · Federal record

Dr. Justin Kosirog

Gastroenterology Physician (CMS: Internal Medicine) · Student in an Organized Health Care Education/Training Program · Oklahoma City, OK

  • NPI 1255726238
  • Accepts Medicare
  • MIPS 85.1 / 100 · 2023
  • 11 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
800 Stanton L Young Blvd # Wp1345
Oklahoma City, OK 731045018
(405) 271-5428
Additional location
1740 W Taylor St
Chicago, IL 606127232
(866) 600-2273

Credentials & registration

NPPES · NUCC
NPI registered
April 2015 — 11 yrs on file
Profile last updated
May 27, 2020
Year of graduation
2015 — 11 yrs since
Specialty taxonomy
207RG0100X — NUCC code
State license (1)
Oklahoma #35686

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1255726238. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
285
Distinct HCPCS
8
Medicare allowed
$35,604
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 94 62 $82
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 56 53 $135
99204 New patient office or other outpatient visit, 45-59 minutes 50 50 $171
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 26 26 $96
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare 17 17 $252
45380 Biopsy of large bowel using a flexible endoscope 16 16 $136
99214 Established patient office or other outpatient visit, 30-39 minutes 14 13 $131
99221 Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 12 12 $87

In context: peer comparison

Among 31 peers in this city , average services per provider: 48. This provider delivers 5.9× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$68
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Janssen Biotech, Inc. 1 $40.80
ABBVIE INC. 1 $26.91

By nature of payment

Food and Beverage
$68

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
57
Patients
51
Total drug cost
$1,103
Drug Type Claims Patients Total cost
Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) Brand 21 21 $341
Omeprazole Generic 20 15 $408
Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) Brand 16 15 $354

Frequently asked questions

Auto-generated from federal data
What is Dr. Justin Kosirog's medical specialty?
Dr. Justin Kosirog practices Gastroenterology Physician in Oklahoma City, OK.
Where does Dr. Justin Kosirog practice?
Dr. Justin Kosirog practices at 800 Stanton L Young Blvd # Wp1345, Oklahoma City, OK 731045018. Office phone: 4052715428.
What is Dr. Justin Kosirog's NPI?
Dr. Justin Kosirog's National Provider Identifier (NPI) is 1255726238, issued by NPPES.
Does Dr. Justin Kosirog accept Medicare assignment?
Yes. Dr. Justin Kosirog accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Justin Kosirog commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.