Helen Woohee Yang, MD
NPI 1003270877ActiveIndividual· Internal Medicine· Castro Valley, CA
Internal Medicine (MD) with Alameda Health System, practicing in Castro Valley, California. Their prescriptions cost Medicare Part D more than their services did: $129,273 for 1,128 claims, against $11,111 paid for services in 2024. Sage Therapeutics, LLC reported $23.25 in payments in 2025, mostly food and beverage. Lists Alameda Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1003270877 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 7, 2016 |
| Last updated in NPPES | Apr 29, 2024 |
| Certified by provider | Apr 29, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A153680 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 84 |
|---|---|
| Services billed | 123 across 31 procedure codes |
| Paid by Medicare | $11,111 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,128 · 2,331 30-day fills |
|---|---|
| Patients | 352 |
| Total drug cost | $129,273 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Alameda Health SystemOakland, CA · 601 clinicians
Hospital affiliations
- Alameda HospitalAlameda, CA
- Highland HospitalOakland, CA
Industry payments (Open Payments)
- 2025$23.25 · 1 payment from 1 company
- 2024$59.73 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sage Therapeutics, LLC | $23.25 | 1 |
What the 2025 payments were for
- Food and Beverage$23.25 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Castro Valley
- 1336106897
- 1083891212
- 1033280896
- 1396815973
- 1033397963
- 1730257338
- 1699724484
- 1619900347
- 1528594801
- 1124052576
- 1548557077
- 1295296275