Stephen Teng-Yip Yau, M.D.
NPI 1154616035ActiveIndividual· Internal Medicine, Pulmonary Disease· Portland, OR
Internal Medicine, Pulmonary Disease (M.D.) with Peacehealth, practicing in Portland, Oregon. Their prescriptions cost Medicare Part D more than their services did: $562,103 for 579 claims, against $92,337 paid for services in 2024. Regeneron Healthcare Solutions, Inc. was the largest of 3 companies reporting payments in 2025, $3,635 in all, mostly travel and lodging. Lists Peacehealth Southwest Medical Cente as a hospital affiliation.
Overview
| NPI | 1154616035 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 18, 2011 |
| Last updated in NPPES | Aug 20, 2024 |
| Certified by provider | Aug 20, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | MD182749 | OR |
| Internal Medicine | 207R00000X | 125:060286 | IL |
| Internal Medicine, Critical Care Medicine | 207RC0200X | MD61578579 | WA |
| Internal Medicine, Pulmonary Disease | 207RP1001X | MD61578579 | WA |
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 - Pulmonary Disease (OR); Practitioner - Pulmonary Disease (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 353 |
|---|---|
| Services billed | 3,655 across 35 procedure codes |
| Paid by Medicare | $92,337 |
Part D prescriptions in 2024
| Prescriptions (claims) | 579 · 764 30-day fills |
|---|---|
| Patients | 111 |
| Total drug cost | $562,103 |
| Generic share | 26% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists) |
| Telehealth | Offers telehealth |
Medical group
- PeacehealthVancouver, WA · 249 clinicians
Hospital affiliation
- Peacehealth Southwest Medical CenteVancouver, WA
Industry payments (Open Payments)
- 2025$3,635 · 35 payments from 3 companies
- 2024$412,917 · 350 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. | $3,508 | 32 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $111.38 | 2 |
| Genzyme Corporation | $16.14 | 1 |
What the 2025 payments were for
- Travel and Lodging$2,916 · 16 payments
- Food and Beverage$719.23 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 101 pulmonologists in Portland · All pulmonologists in Oregon