Tony M. Chang, M.D.
NPI 1164445896ActiveIndividual· Surgery· Lodi, CA
Surgery (M.D.) in Lodi, California, trained at George Washington University School of Medicine (class of 2001). Mostly services rather than prescriptions: Medicare paid $12,581 for 42 patients in 2024, with only 43 Part D claims. Smith+nephew, Inc. was the largest of 2 companies reporting payments in 2025, $45.47 in all, mostly food and beverage.
Overview
| NPI | 1164445896 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 25, 2006 |
| Last updated in NPPES | Jul 16, 2024 |
| Certified by provider | Jul 16, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | A85797 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Surgical Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 42 |
|---|---|
| Services billed | 77 across 25 procedure codes |
| Paid by Medicare | $12,581 |
Part D prescriptions in 2024
| Prescriptions (claims) | 43 · 49 30-day fills |
|---|---|
| Patients | 26 |
| Total drug cost | $637.54 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | George Washington University School of Medicine |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Surgical Oncology |
Medical group
- Cancer Therapy Medical Group IncFresno, CA · 13 clinicians
Hospital affiliations
- Dameron HospitalStockton, CA
- Saint Agnes Medical CenterFresno, CA
Industry payments (Open Payments)
- 2025$45.47 · 2 payments from 2 companies
- 2024$3,692 · 33 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Smith+nephew, Inc. | $27.78 | 1 |
| Pacira Pharmaceuticals Incorporated | $17.69 | 1 |
What the 2025 payments were for
- Food and Beverage$45.47 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Surgery providers in Lodi
- 1780033084
- 1881735835
- 1255160719
- 1457323446
- 1487705935
- 1760404065
- 1326482142
- 1104840800
- 1457344293