Tiffany Shem, PA-C
NPI 1245991553ActiveIndividual· Physician Assistant· Alameda, CA
Physician Assistant (PA-C) with Alameda Health System, practicing in Alameda, California. 50 Medicare patients in 2024, $9,901 paid; nearly all of their 198 Part D prescriptions were generic (99%). Vericel Corporation was the largest of 2 companies reporting payments in 2025, $58.75 in all, mostly food and beverage. Lists Highland Hospital as a hospital affiliation.
Overview
| NPI | 1245991553 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jan 7, 2022 |
| Last updated in NPPES | Aug 21, 2022 |
| Certified by provider | Aug 21, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA60848 | CA |
| Physician Assistant | 363A00000X | — | — |
| Physician Assistant, Medical | 363AM0700X | PA60848 | CA |
| Physician Assistant, Surgical | 363AS0400X | — | — |
| Physician Assistant, Surgical | 363AS0400X | PA60848 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 50 |
|---|---|
| Services billed | 210 across 18 procedure codes |
| Paid by Medicare | $9,901 |
Part D prescriptions in 2024
| Prescriptions (claims) | 198 · 272 30-day fills |
|---|---|
| Patients | 88 |
| Total drug cost | $3,005 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Alameda Health SystemOakland, CA · 601 clinicians
Hospital affiliation
- Highland HospitalOakland, CA
Industry payments (Open Payments)
- 2025$58.75 · 2 payments from 2 companies
- 2024$17.26 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vericel Corporation | $33.92 | 1 |
| Moximed, Inc | $24.83 | 1 |
What the 2025 payments were for
- Food and Beverage$58.75 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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