Colin James Sigmund, OD
NPI 1811568850ActiveIndividual· Optometrist· Green Bay, WI
Optometrist (OD) in Green Bay, Wisconsin, trained at Indiana University - School of Optometry (class of 2021). Their prescriptions cost Medicare Part D more than their services did: $178,805 for 319 claims, against $14,640 paid for services in 2024. Alcon Vision LLC was the largest of 11 companies reporting payments in 2025, $513.83 in all, mostly food and beverage.
Overview
| NPI | 1811568850 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | Yes |
| NPI issued | Jul 9, 2021 |
| Last updated in NPPES | Jul 9, 2021 |
| Certified by provider | Jul 9, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 3691 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 129 |
|---|---|
| Services billed | 245 across 13 procedure codes |
| Paid by Medicare | $14,640 |
Part D prescriptions in 2024
| Prescriptions (claims) | 319 · 677 30-day fills |
|---|---|
| Patients | 92 |
| Total drug cost | $178,805 |
| Generic share | 61% of claims |
Education and affiliations
| Medical school | Indiana University - School of Optometry |
|---|---|
| Graduation year | 2021 |
| Medicare specialty | Optometry |
Medical group
- Valley Eye AssociatesAppleton, WI · 26 clinicians
Industry payments (Open Payments)
- 2025$513.83 · 22 payments from 11 companies
- 2024$300.77 · 9 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $105.38 | 2 |
| Bausch & Lomb Americas Inc. | $91.29 | 5 |
| Abbvie Inc. | $71.96 | 2 |
| Thea Pharma Inc. | $67.52 | 4 |
| Sun Pharmaceutical Industries Inc. | $40.55 | 2 |
What the 2025 payments were for
- Food and Beverage$513.83 · 22 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 61 optometrists in Green Bay · All optometrists in Wisconsin