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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.

JOANNA HYUNJI YOON
NPI 1346967619
Internal Medicine in Oklahoma City, OK

Active since October 26, 2022PECOS Enrolled
800 STANTON L YOUNG BLVD, OKLAHOMA CITY, OK 73104(405) 271-5963 Get Directions Write a Review

NPPES record last updated: July 8, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Jul 8, 2026, Oct 26, 2022 (2 updates tracked since 2022).

About Joanna Hyunji Yoon NPPES

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

JOANNA HYUNJI YOON (NPI 1346967619) is an individual internal medicine provider in Oklahoma City, Oklahoma, licensed in Oklahoma (50152) and active in the NPI registry since October 2022. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1346967619
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameJOANNA HYUNJI YOON
Location Address800 STANTON L YOUNG BLVDOklahoma City, OK 73104-5018
Mailing Address800 Stanton L Young BlvdOklahoma City, OK 73104-5018 · (405) 271-5963
Phone(405) 271-5963
Sole ProprietorNo
Enumeration DateOctober 26, 2022
Last NPPES UpdateJuly 8, 20262 updates tracked since enumeration
NPPES CertifiedJuly 8, 2026
✔ NPI 1346967619 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 · 50152
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 · License 50152 (OK)
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)

Joanna Hyunji Yoon 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 Joanna Yoon's NPI number?

The NPI number for Joanna Yoon is 1346967619. It was assigned to this individual provider in the NPPES registry on October 26, 2022.

Where is Joanna Yoon located?

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

What is Joanna Yoon's specialty?

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

Is Joanna Yoon enrolled in Medicare?

Yes. Joanna Yoon is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Joanna Yoon was last updated on July 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 59 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.