Ellen Tsay
NPI 1194354951ActiveIndividual· Orthopaedic Surgery· Vacaville, CA
Orthopaedic Surgery with Reconstructive Orthopaedic Associates II LLC, practicing in Vacaville, California. Part D covered 21 prescriptions written in 2024, 100% of them generic. Smith+nephew, Inc. was the largest of 3 companies reporting payments in 2025, $6,079 in all, mostly grants. Lists Bryn Mawr Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1194354951 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Apr 3, 2020 |
| Last updated in NPPES | Sep 22, 2026 |
| Certified by provider | Sep 22, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | MD487615 | PA |
| Orthopaedic Surgery | 207X00000X | 25MA12498400 | NJ |
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 - Orthopedic Surgery (NJ); Practitioner - Orthopedic Surgery (PA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 21 · 23 30-day fills |
|---|---|
| Patients | 13 |
| Total drug cost | $145.51 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Orthopedic Surgery |
Medical group
- Reconstructive Orthopaedic Associates II LLCChalfont, PA · 281 clinicians
Hospital affiliations
- Bryn Mawr HospitalBryn Mawr, PA
- Jefferson Abington HospitalAbington, PA
- Physicians Care Surgical HospitalRoyersford, PA
- Rothman Orthopaedic Specialty HospitalBensalem, PA
- Thomas Jefferson University HospitalPhiladelphia, PA
Industry payments (Open Payments)
- 2025$6,079 · 22 payments from 3 companies
- 2024$124.73 · 4 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Smith+nephew, Inc. | $3,350 | 3 |
| Stryker Corporation | $1,403 | 7 |
| Zimmer Biomet Holdings, Inc. | $1,326 | 12 |
What the 2025 payments were for
- Grant$3,125 · 1 payment
- Travel and Lodging$1,690 · 5 payments
- Food and Beverage$1,186 · 15 payments
- Education$77.24 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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