Rahel Teferi Ruiz
NPI 1821089129ActiveIndividual· Internal Medicine· Castro Valley, CA
Internal Medicine in Castro Valley, California, trained at Harvard Medical School (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $285,739 for 3,769 claims, against $87,991 paid for services in 2024. Novo Nordisk Inc reported $26.00 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1821089129 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Nov 4, 2005 |
| Last updated in NPPES | Dec 24, 2019 |
| Certified by provider | Dec 24, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A64304 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 235 |
|---|---|
| Services billed | 930 across 36 procedure codes |
| Paid by Medicare | $87,991 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,769 · 8,391 30-day fills |
|---|---|
| Patients | 352 |
| Total drug cost | $285,739 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Harvard Medical School |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
Medical group
- The West Oakland Health CouncilOakland, CA · 27 clinicians
Hospital affiliation
- Alta Bates Summit Medical CenterOakland, CA
Industry payments (Open Payments)
- 2025$26.00 · 1 payment from 1 company
- 2024$185.23 · 7 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $26.00 | 1 |
What the 2025 payments were for
- Food and Beverage$26.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 31 internal medicine physicians in Castro Valley · All internal medicine physicians in California