Thomas C. Chen, M.D., PHD
NPI 1225071509ActiveIndividual· Neurological Surgery· Los Angeles, CA
Neurological Surgery (M.D., PHD) in Los Angeles, California, trained at University of California, San Francisco School of Medicine (class of 1988). Mostly services rather than prescriptions: Medicare paid $70,789 for 128 patients in 2024, with only 16 Part D claims. Medtronic, Inc. was the largest of 2 companies reporting payments in 2025, $556.21 in all, mostly food and beverage.
Overview
| NPI | 1225071509 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., PHD |
| Sole proprietor | No |
| NPI issued | Jun 14, 2006 |
| Last updated in NPPES | Nov 27, 2023 |
| Certified by provider | Aug 31, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | G66798 | 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 - Neurosurgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 128 |
|---|---|
| Services billed | 323 across 53 procedure codes |
| Paid by Medicare | $70,789 |
Part D prescriptions in 2024
| Prescriptions (claims) | 16 · 18 30-day fills |
|---|---|
| Patients | 13 |
| Total drug cost | $147.12 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of California, San Francisco School of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Neurosurgery |
| Telehealth | Offers telehealth |
Medical group
- Usc Care Medical Group IncLos Angeles, CA · 1,380 clinicians
Hospital affiliations
- Keck Hospital of UscLos Angeles, CA
- Los Angeles General Medical CenterLos Angeles, CA
- Usc Verdugo Hills HospitalGlendale, CA
Industry payments (Open Payments)
- 2025$556.21 · 6 payments from 2 companies
- 2024$177.30 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $449.83 | 5 |
| Axogen | $106.38 | 1 |
What the 2025 payments were for
- Food and Beverage$556.21 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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