John W. Chang, MD
NPI 1720057052ActiveIndividual· Surgery· Coral Gables, FL
Surgery (MD) in Coral Gables, Florida, trained at Northwestern University Feinberg Medical School (class of 1997). Mostly services rather than prescriptions: Medicare paid $56,615 for 14 patients in 2024, with only 45 Part D claims. Angiodynamics, Inc. was the largest of 5 companies reporting payments in 2025, $3,609 in all, mostly device and supply loans.
Overview
| NPI | 1720057052 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 17, 2006 |
| Last updated in NPPES | Jun 28, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | ME85914 | FL |
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 - General Surgery (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 14 |
|---|---|
| Services billed | 108 across 9 procedure codes |
| Paid by Medicare | $56,615 |
Part D prescriptions in 2024
| Prescriptions (claims) | 45 · 49 30-day fills |
|---|---|
| Patients | 20 |
| Total drug cost | $3,347 |
| Generic share | 73% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | General Surgery |
Industry payments (Open Payments)
- 2025$3,609 · 10 payments from 5 companies
- 2024$9,808 · 8 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Angiodynamics, Inc. | $3,493 | 4 |
| Cashflow Solutions, LLC | $39.42 | 2 |
| Galderma Laboratories, L.P. | $31.91 | 2 |
| Medtronic, Inc. | $24.17 | 1 |
| Tactile Systems Technology Inc | $20.58 | 1 |
What the 2025 payments were for
- Long term medical supply or device loan$3,493 · 4 payments
- Food and Beverage$116.08 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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