Emerson Y. Chen, MD
NPI 1134564610ActiveIndividual· Internal Medicine, Hematology & Oncology· Portland, OR
Internal Medicine, Hematology & Oncology (MD) with University Professional Services, practicing in Portland, Oregon. Their prescriptions cost Medicare Part D more than their services did: $508,192 for 584 claims, against $37,618 paid for services in 2024. Janssen Research & Development, LLC reported $37.53 in payments in 2025, mostly food and beverage. Lists Ohsu Hospital and Clinics as a hospital affiliation.
Overview
| NPI | 1134564610 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 9, 2013 |
| Last updated in NPPES | Apr 29, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | MD182080 | OR |
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 - Medical Oncology (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 103 |
|---|---|
| Services billed | 602 across 12 procedure codes |
| Paid by Medicare | $37,618 |
Part D prescriptions in 2024
| Prescriptions (claims) | 584 · 662 30-day fills |
|---|---|
| Patients | 64 |
| Total drug cost | $508,192 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- University Professional ServicesBeaverton, OR · 1,724 clinicians
Hospital affiliation
- Ohsu Hospital and ClinicsPortland, OR
Industry payments (Open Payments)
- 2025$37.53 · 1 payment from 1 company
- 2024$37.24 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Research & Development, LLC | $37.53 | 1 |
What the 2025 payments were for
- Food and Beverage$37.53 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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