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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

WARREN CHUN MD
NPI 1194491282
Internal Medicine in Oklahoma City, OK

Active since August 18, 2021PECOS Enrolled
800 STANTON L YOUNG BLVD, OKLAHOMA CITY, OK 73104(405) 271-5963 Get Directions Write a Review

NPPES record last updated: July 11, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Jul 11, 2026, May 29, 2026, Aug 18, 2021 (3 updates tracked since 2021).

About Warren Chun Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WARREN CHUN MD (NPI 1194491282) is an individual internal medicine provider in Oklahoma City, Oklahoma, licensed in Oklahoma (48036) and active in the NPI registry since August 2021. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1194491282
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameWARREN CHUNCredential: MD
Location Address800 STANTON L YOUNG BLVDOklahoma City, OK 73104-5018
Mailing Address800 Stanton L Young Blvd, Aat 6300Oklahoma City, OK 73104-5018 · (405) 271-5963
Phone(405) 271-5963
Sole ProprietorNo
Enumeration DateAugust 18, 2021
Last NPPES UpdateJuly 11, 20263 updates tracked since enumeration
NPPES CertifiedJuly 11, 2026
✔ NPI 1194491282 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in OK · 48036
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
800 STANTON L YOUNG BLVD, Oklahoma City, OK 73104
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Warren Chun Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 73104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$123.06 typical visit price
range $53.00 – $162.61
Typical copayment $30.76 (range $13.25 – $40.65)
Most-billed visit code 99204
Established Patient
$94.27 typical visit price
range $16.68 – $132.40
Typical copayment $23.56 (range $4.17 – $33.10)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ROHAN HYLTON
Anesthesiology
800 STANTON L YOUNG BLVD
OKLAHOMA CITY, OK 73104
Oklahoma County (405) 271-2316
DR. JAKE LEE EVANS MD
Radiology (Diagnostic Radiology)
800 STANTON L YOUNG BLVD, AAT 6300
OKLAHOMA CITY, OK 73104
Oklahoma County (405) 271-5963
MADISON RYANNE CRAFT MD
Orthopaedic Surgery
800 STANTON L YOUNG BLVD
OKLAHOMA CITY, OK 73104
Oklahoma County (915) 783-8164
MACGREGOR THOMAS
Student in an Organized Health Care Education/Training Program
800 STANTON L YOUNG BLVD
OKLAHOMA CITY, OK 73104
Oklahoma County (405) 271-2316
DAVID SAN MARTIN
Student in an Organized Health Care Education/Training Program
800 STANTON L YOUNG BLVD
OKLAHOMA CITY, OK 73104
Oklahoma County (405) 271-2316
VIJAY RAJ
Student in an Organized Health Care Education/Training Program
800 STANTON L YOUNG BLVD
OKLAHOMA CITY, OK 73104
Oklahoma County (405) 271-2316
MICHAEL TAYLOR HEATH MD
Surgery
800 STANTON L YOUNG BLVD
OKLAHOMA CITY, OK 73104
Oklahoma County (405) 271-6308
DR. ILINA TERZIYSKI MD
Obstetrics & Gynecology (Urogynecology and Reconstructive Pelvic Surgery)
800 STANTON L YOUNG BLVD
OKLAHOMA CITY, OK 73104
Oklahoma County (405) 271-8469

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Warren Chun's NPI number?

The NPI number for Warren Chun is 1194491282. It was assigned to this individual provider in the NPPES registry on August 18, 2021.

Where is Warren Chun located?

Warren Chun practices at 800 Stanton L Young Blvd, Oklahoma City, OK 73104. The listed phone number is (405) 271-5963.

What is Warren Chun's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Warren Chun enrolled in Medicare?

Yes. Warren Chun is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Warren Chun was last updated on July 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 57 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.