Thomas J. Chang, D.P.M.
NPI 1841315736ActiveIndividual· Podiatrist, Foot & Ankle Surgery· Santa Rosa, CA
Podiatrist, Foot & Ankle Surgery (D.P.M.) in Santa Rosa, California, licensed in CA, with an NPI issued in March 2007. 755 Medicare patients in 2024, $320,033 paid; all of their 320 Part D prescriptions were generic. Medical Device Business Services, Inc. was the largest of 8 companies reporting payments in 2025, $23,092 in all, mostly consulting fees.
Overview
| NPI | 1841315736 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.P.M. |
| Sole proprietor | Yes |
| NPI issued | Mar 20, 2007 |
| Last updated in NPPES | Dec 8, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Podiatrist, Foot & Ankle Surgery Primary | 213ES0103X | E3908 | 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 - Podiatry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 755 |
|---|---|
| Services billed | 4,403 across 91 procedure codes |
| Paid by Medicare | $320,033 |
Part D prescriptions in 2024
| Prescriptions (claims) | 320 · 342 30-day fills |
|---|---|
| Patients | 178 |
| Total drug cost | $2,341 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
- 2025$23,092 · 53 payments from 8 companies
- 2024$117,164 · 84 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medical Device Business Services, Inc. | $7,574 | 8 |
| Depuy Synthes Sales Inc. | $6,637 | 7 |
| Paragon 28, Inc. | $4,356 | 29 |
| Bioventus LLC | $4,285 | 5 |
| Tactile Systems Technology Inc | $156.68 | 1 |
What the 2025 payments were for
- Consulting Fee$12,238 · 3 payments
- Travel and Lodging$5,316 · 22 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$4,263 · 2 payments
- Food and Beverage$1,258 · 25 payments
- Royalty or License$18.04 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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