Stephen Lumin Chen, M.D.
NPI 1831221837ActiveIndividual· Internal Medicine, Gastroenterology· Tualatin, OR
Internal Medicine, Gastroenterology (M.D.) in Tualatin, Oregon, trained at University of Chicago, Pritzker School of Medicine (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $396,505 for 612 claims, against $62,919 paid for services in 2024. Boston Scientific Corporation reported $377.37 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1831221837 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 12, 2007 |
| Last updated in NPPES | Nov 28, 2023 |
| Certified by provider | Nov 28, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | MD27258 | OR |
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 (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 267 |
|---|---|
| Services billed | 1,224 across 48 procedure codes |
| Paid by Medicare | $62,919 |
Part D prescriptions in 2024
| Prescriptions (claims) | 612 · 1,031 30-day fills |
|---|---|
| Patients | 222 |
| Total drug cost | $396,505 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of Chicago, Pritzker School of Medicine |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- The Oregon Clinic, PCPortland, OR · 362 clinicians
Hospital affiliations
- Legacy Meridian Park Medical CenterTualatin, OR
- Providence Newberg Medical CenterNewberg, OR
- Providence Willamette Falls Medical CenterOregon City, OR
- Salem HospitalSalem, OR
Industry payments (Open Payments)
- 2025$377.37 · 9 payments from 1 company
- 2024$31.95 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $377.37 | 9 |
What the 2025 payments were for
- Food and Beverage$377.37 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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