John Alexander Flatter, M.D.
NPI 1780071662ActiveIndividual· Ophthalmology· Wausau, WI
Ophthalmology (M.D.) in Wausau, Wisconsin, trained at Medical College of Wisconsin (class of 2015). In 2024 Medicare paid $292,341 for 606 patients, and Part D covered 2,409 of their prescriptions, 67% of them generic. Alcon Vision LLC was the largest of 3 companies reporting payments in 2025, $144.11 in all, mostly food and beverage.
Overview
| NPI | 1780071662 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 18, 2015 |
| Last updated in NPPES | Oct 7, 2020 |
| Certified by provider | Oct 7, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 71158-20 | WI |
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 (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 606 |
|---|---|
| Services billed | 2,376 across 34 procedure codes |
| Paid by Medicare | $292,341 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,409 · 3,243 30-day fills |
|---|---|
| Patients | 604 |
| Total drug cost | $103,791 |
| Generic share | 67% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Ophthalmology |
Medical group
- Eye Clinic of Wisconsin, S.C.Antigo, WI · 19 clinicians
Hospital affiliations
- Langlade HospitalAntigo, WI
- Marshfield Medical CenterMarshfield, WI
Industry payments (Open Payments)
- 2025$144.11 · 7 payments from 3 companies
- 2024$2,704 · 33 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $94.46 | 5 |
| Abbvie Inc. | $34.47 | 1 |
| Johnson & Johnson Surgical Vision, Inc. | $15.18 | 1 |
What the 2025 payments were for
- Food and Beverage$144.11 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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