Richard Z. Tsai, MD
NPI 1558387555ActiveIndividual· Internal Medicine· Portland, OR
Internal Medicine (MD) in Portland, Oregon, trained at Washington University School of Medicine (class of 1998). Their prescriptions cost Medicare Part D more than their services did: $661,006 for 8,140 claims, against $34,899 paid for services in 2024.
Overview
| NPI | 1558387555 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 14, 2006 |
| Last updated in NPPES | Mar 25, 2021 |
| Certified by provider | Mar 25, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD22952 | 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 - Internal Medicine (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 239 |
|---|---|
| Services billed | 972 across 38 procedure codes |
| Paid by Medicare | $34,899 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,140 · 18,781 30-day fills |
|---|---|
| Patients | 618 |
| Total drug cost | $661,006 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Washington University School of Medicine |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Providence Health and Services OregonPortland, OR · 1,433 clinicians
Hospital affiliation
- Providence St Vincent Medical CenterPortland, OR
Other facilities
- Providence Home HealthHome health agency · Portland, OR
- Providence HospiceHospice · Portland, OR
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Portland
- 1003071846
- 1013979533
- 1023025152
- 1023279064
- 1043673619
- 1053457937
- 1053488718
- 1063767317
- 1073535266
- 1104205269
- 1124126636
- 1154813889
All 958 internal medicine physicians in Portland · All internal medicine physicians in Oregon