Eugene Jay Yoon, M.D.
NPI 1861618449ActiveIndividual· Internal Medicine, Gastroenterology· Fullerton, CA
Internal Medicine, Gastroenterology (M.D.) in Fullerton, California, trained at University of Virginia School of Medicine (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $539,799 for 1,086 claims, against $157,022 paid for services in 2024. Boston Scientific Corporation was the largest of 17 companies reporting payments in 2025, $3,464 in all, mostly food and beverage.
Overview
| NPI | 1861618449 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 18, 2007 |
| Last updated in NPPES | Oct 24, 2024 |
| Certified by provider | Oct 22, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A81190 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 498 |
|---|---|
| Services billed | 1,339 across 56 procedure codes |
| Paid by Medicare | $157,022 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,086 · 2,106 30-day fills |
|---|---|
| Patients | 284 |
| Total drug cost | $539,799 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | University of Virginia School of Medicine |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Providence Medical FoundationVictorville, CA · 1,466 clinicians
Hospital affiliation
- Providence St. Jude Medical CenterFullerton, CA
Industry payments (Open Payments)
- 2025$3,464 · 99 payments from 17 companies
- 2024$1,756 · 78 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $1,228 | 8 |
| Abbvie Inc. | $721.40 | 38 |
| Madrigal Pharmaceuticals | $264.49 | 10 |
| Histosonics, Inc. | $228.20 | 1 |
| Janssen Biotech, Inc. | $208.33 | 10 |
What the 2025 payments were for
- Food and Beverage$2,423 · 95 payments
- Travel and Lodging$1,042 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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