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HYUN DON YUN MD
NPI 1508090473
Internal Medicine - Hematology & Oncology in Irvine, CA

Active since May 07, 2009PECOS EnrolledAccepts Medicare Assignment
4950 BARRANCA PKWY STE 210, IRVINE, CA 92604(949) 414-9337(949) 402-0100 Get Directions Write a Review

NPPES record last updated: August 21, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 21, 2026, May 15, 2026, Jan 6, 2025 and 5 more (8 updates tracked since 2019).

About Hyun Don Yun Md NPPES

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

HYUN DON YUN MD (NPI 1508090473) is an individual hematology & oncology provider in Irvine, California, licensed in California (A172166) and active in the NPI registry since May 2009. He is enrolled in Medicare PECOS, is affiliated with Trinity Rock Island, and is a graduate of Other (2005).

NPPES Registry Identity

NPI1508090473
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameHYUN DON YUNCredential: MD
Location Address4950 BARRANCA PKWY STE 210Irvine, CA 92604-8648
Mailing Address4950 Barranca Pkwy Ste 210Irvine, CA 92604-8648 · (949) 414-9337 · Fax (949) 402-0100
Phone(949) 414-9337
Fax(949) 402-0100
Sole ProprietorNo
Medical School CMSOtherGraduated 2005
Enumeration DateMay 7, 2009
Last NPPES UpdateAugust 21, 20268 updates tracked since enumeration
NPPES CertifiedAugust 21, 2026
✔ NPI 1508090473 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in CA · A172166
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedInternal MedicineTaxonomy 207R00000X · License A172166 (CA)
Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License A172166 (CA)
Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License A172166 (CA)
4950 BARRANCA PKWY STE 210, Irvine, CA 92604
Open in Google Maps ↗

Other Identifiers 3

OtherCA477608CA · Medicare
OtherCA477679CA · Medicare
OtherCB376043CA · Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Anthem Blue Cross and Blue Shield, Network Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Hyun Don Yun Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8921254996
PECOS Enrollment IDI20190701000078
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.

Medicare Billing Reassignments

4

Medicare enrollment records show Hyun Don Yun reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Compassionate Cancer Care Medical Group, Inc.
8.5 mi
Specialist
11180 WARNER AVE STE 351
Fountain Valley, CA 92708
  • Reassigned Medicare billing, California enrollment
  • 20 clinicians in this Medicare group
NPI 1548248032 (714) 698-0300
Jefferson County Public Hospital District No 2
998 mi
Sleep Medicine
9833 POPLARS AVE NW STE 104
Silverdale, WA 98383
  • Reassigned Medicare billing, Washington enrollment
  • 208 clinicians in this Medicare group
NPI 1467664631 (360) 698-0422
Trinity Medical Center
1,580 mi
Psychiatry
2701 17TH ST
Rock Island, IL 61201
  • Reassigned Medicare billing, Illinois enrollment
  • 159 clinicians in this Medicare group
NPI 1033163829 (309) 779-3000
Rush University Medical Center
1,719 mi
Internal Medicine
2011 YORK ROAD, 2ND FLOOR
Oak Brook, IL 60523
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Rush University Medical Group
  • 2,169 clinicians in this Medicare group
NPI 1801375696 (630) 724-1310

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Trinity Rock Island

Acute Care Hospitals · Rock Island, IL
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140280
Location2701 17th StRock Island, IL 61201 · Rock Island County
Emergency services Birthing friendly

Froedtert South Inc.

Acute Care Hospitals · Pleasant Prairie, WI
1/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number520021
Location9555 76th StPleasant Prairie, WI 53158 · Kenosha County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92604 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
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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

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

HYUN DON YUN MD PC
Internal Medicine
4950 BARRANCA PKWY STE 210
IRVINE, CA 92604
Orange County (949) 414-9337

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 Hyun Don Yun's NPI number?

The NPI number for Hyun Don Yun is 1508090473. It was assigned to this individual provider in the NPPES registry on May 7, 2009.

Where is Hyun Don Yun located?

Hyun Don Yun practices at 4950 Barranca Pkwy Ste 210, Irvine, CA 92604. The listed phone number is (949) 414-9337.

What is Hyun Don Yun's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Hyun Don Yun enrolled in Medicare?

Yes. Hyun Don Yun is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Hyun Don Yun's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hyun Don Yun reassigns Medicare benefits to 4 organizations: Compassionate Cancer Care Medical Group, Inc. (Fountain Valley, CA), Jefferson County Public Hospital District No 2 (Silverdale, WA), Trinity Medical Center (Rock Island, IL) and Rush University Medical Center (Oak Brook, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Hyun Don Yun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Hyun Don Yun accept?

Health plans from Ambetter Health, Anthem Blue Cross and Blue Shield, Network Health, Providence Health Plan and Wellmark Health Plan of Iowa, Inc. list Hyun Don Yun as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Hyun Don Yun affiliated with any hospitals?

According to CMS data, Hyun Don Yun is affiliated with Trinity Rock Island and Froedtert South Inc..

When was this NPI record last updated?

The NPPES record for Hyun Don Yun was last updated on August 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.