Sara Davis Schalk, OD
NPI 1275617300ActiveIndividual· Optometrist· Appleton, WI
Optometrist (OD) in Appleton, Wisconsin, trained at Pacific University - College of Optometry (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $213,511 for 685 claims, against $23,257 paid for services in 2024. Mallinckrodt Hospital Products Inc. was the largest of 11 companies reporting payments in 2025, $704.27 in all, mostly food and beverage.
Overview
| NPI | 1275617300 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | No |
| NPI issued | Oct 25, 2006 |
| Last updated in NPPES | Mar 26, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 2975 | 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 - Optometry (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 244 |
|---|---|
| Services billed | 413 across 12 procedure codes |
| Paid by Medicare | $23,257 |
Part D prescriptions in 2024
| Prescriptions (claims) | 685 · 1,134 30-day fills |
|---|---|
| Patients | 257 |
| Total drug cost | $213,511 |
| Generic share | 48% of claims |
Education and affiliations
| Medical school | Pacific University - College of Optometry |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Optometry |
Medical group
- Valley Eye AssociatesAppleton, WI · 26 clinicians
Industry payments (Open Payments)
- 2025$704.27 · 31 payments from 11 companies
- 2024$496.22 · 21 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Mallinckrodt Hospital Products Inc. | $189.46 | 6 |
| Bausch & Lomb Americas Inc. | $123.04 | 7 |
| Dompe US, Inc. | $102.55 | 5 |
| Oyster Point Pharma, Inc. | $58.41 | 3 |
| Abbvie Inc. | $53.33 | 1 |
What the 2025 payments were for
- Food and Beverage$616.57 · 30 payments
- Education$87.70 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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