Ruth Hsiao, MD
NPI 1174942882ActiveIndividual· Hospitalist· San Diego, CA
Hospitalist (MD) in San Diego, California, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2014). Their prescriptions cost Medicare Part D more than their services did: $336,741 for 2,068 claims, against $928.51 paid for services in 2024. Alnylam Pharmaceuticals Inc. reported $150.00 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1174942882 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 9, 2014 |
| Last updated in NPPES | Dec 8, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | A137828 | 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 - Hospitalist (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 11 |
|---|---|
| Services billed | 14 across 8 procedure codes |
| Paid by Medicare | $928.51 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,068 · 6,231 30-day fills |
|---|---|
| Patients | 479 |
| Total drug cost | $336,741 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 2014 |
| Medicare specialty | Hospitalist |
| Secondary specialties | Internal Medicine |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Hospital affiliation
- Kaiser Foundation Hospital - Baldwin ParkBaldwin Park, CA
Industry payments (Open Payments)
- 2025$150.00 · 1 payment from 1 company
- 2024$87.91 · 4 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alnylam Pharmaceuticals Inc. | $150.00 | 1 |
What the 2025 payments were for
- Food and Beverage$150.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 175 hospitalists in San Diego · All hospitalists in California