A fast, free, no-login way to look up any U.S. healthcare provider in the federal NPPES registry.

Lookups

NPI Lookup
NPI Registry
By Specialty
By State

Resources

Guides
For Providers / API
Data Sources
About

Legal

Privacy
Terms
Correct a record

Data is sourced from the public NPPES (National Plan and Provider Enumeration System) registry published by CMS. NPI Central is not affiliated with, or endorsed by, CMSor any healthcare provider. Information is provided “as is” for general reference and is not medical advice.

FCRA notice: NPI Central is not a consumer reporting agency. This information may not be used to determine eligibility for employment, credentialing, insurance, or any other purpose covered by the Fair Credit Reporting Act.

© 2026 NPI Central. All rights reserved.

Home/
NPI Lookup/
OK/
NPI 1255726238

IndividualActive

Justin Kosirog

NPI 1255726238 · Gastroenterology Physician · Oklahoma City, OK

Provider details

NPI number: 1255726238
Entity type: Individual
Primary specialty: Gastroenterology PhysicianAllopathic & Osteopathic Physicians
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Gastroenterology PhysicianPrimary207RG0100XLicense 35686 (OK)
Allopathic & Osteopathic Physicians
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Practice location

800 Stanton L Young Blvd # Wp1345

Oklahoma City, OK 73104-5018

Phone: (405) 271-5428

Approximate (ZIP-level) locationGet directions

More OK providers

Mailing address

800 Stanton L Young Blvd # Wp1345

Oklahoma City, OK 73104-5018

Additional practice locations (1)

1740 W Taylor St
Chicago, IL 60612-7232
Phone: (866) 600-2273

Registry dates

Enumerated: 2015-04-06
Last updated: 2020-05-27
Certified: 2020-05-27

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Justin Kosirog — NPI 1255726238, Oklahoma City, OK | NPI Central