Hyun Don Yun, MD
NPI 1508090473ActiveIndividual· Internal Medicine, Hematology & Oncology· Irvine, CA
Internal Medicine, Hematology & Oncology (MD) with Trinity Medical Center, practicing in Irvine, California. Enrolled in Medicare as practitioner - hematology/oncology and practitioner - hematology. Daiichi Sankyo Inc. was the largest of 3 companies reporting payments in 2025, $1,222 in all, mostly consulting fees. Lists Froedtert South Inc. and 1 other hospital as hospital affiliations.
Overview
| NPI | 1508090473 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 7, 2009 |
| Last updated in NPPES | Aug 21, 2026 |
| Certified by provider | Aug 21, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A172166 | CA |
| Internal Medicine, Medical Oncology | 207RX0202X | A172166 | CA |
| Internal Medicine, Hematology | 207RH0000X | A172166 | CA |
| Internal Medicine | 207R00000X | A172166 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (CA); Practitioner - Hematology (IL); Practitioner - Internal Medicine (WA) |
|---|
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Hematology |
| Secondary specialties | Medical Oncology |
Medical group
- Trinity Medical CenterRock Island, IL · 99 clinicians
Hospital affiliations
- Froedtert South Inc.Kenosha, WI
- Trinity Rock IslandRock Island, IL
Industry payments (Open Payments)
- 2025$1,222 · 4 payments from 3 companies
- 2024$1,199 · 8 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Daiichi Sankyo Inc. | $650.00 | 1 |
| Cardinal Health 110 LLC | $550.00 | 2 |
| Beone Medicines USA, Inc. | $21.60 | 1 |
What the 2025 payments were for
- Consulting Fee$1,200 · 3 payments
- Food and Beverage$21.60 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 hematologist-oncologists in Irvine · All hematologist-oncologists in California