Jonathan S. Chang, M.D.
NPI 1346403961ActiveIndividual· Ophthalmology· Middleton, WI
Ophthalmology (M.D.) in Middleton, Wisconsin, trained at Columbia University College of Physicians and Surgeons (class of 2008). In 2024 Medicare paid $539,754 for 534 patients, and Part D covered 246 of their prescriptions, 63% of them generic. Alcon Vision LLC reported $147.33 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1346403961 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 3, 2008 |
| Last updated in NPPES | Feb 1, 2021 |
| Certified by provider | Feb 1, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 66356 | WI |
| Ophthalmology | 207W00000X | 275254 | NY |
| Ophthalmology | 207W00000X | ME112267 | 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 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 - Ophthalmology (IL); Practitioner - Ophthalmology (NY); Practitioner - Ophthalmology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 534 |
|---|---|
| Services billed | 7,583 across 45 procedure codes |
| Paid by Medicare | $539,754 |
Part D prescriptions in 2024
| Prescriptions (claims) | 246 · 406 30-day fills |
|---|---|
| Patients | 94 |
| Total drug cost | $7,025 |
| Generic share | 63% of claims |
Education and affiliations
| Medical school | Columbia University College of Physicians and Surgeons |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Ophthalmology |
Medical group
- University of Wisconsin Medical Foundation IncMadison, WI · 2,553 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$147.33 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $147.33 | 1 |
What the 2025 payments were for
- Food and Beverage$147.33 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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