Allyson M. Bigham, O.D.
NPI 1356337661ActiveIndividual· Optometrist· Evansville, IN
Optometrist (O.D.) in Evansville, Indiana, trained at University of Missouri St Louis - School of Optometry (class of 2003). In 2024 Medicare paid $25,762 for 306 patients, and Part D covered 235 of their prescriptions, 77% of them generic. Bausch & Lomb Americas Inc. reported $84.17 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1356337661 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | No |
| NPI issued | Sep 22, 2005 |
| Last updated in NPPES | Jan 21, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 18003226A | IN |
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 (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 306 |
|---|---|
| Services billed | 441 across 12 procedure codes |
| Paid by Medicare | $25,762 |
Part D prescriptions in 2024
| Prescriptions (claims) | 235 · 344 30-day fills |
|---|---|
| Patients | 67 |
| Total drug cost | $3,743 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | University of Missouri St Louis - School of Optometry |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Optometry |
Medical group
- Simpson and Bigham Od PartnershipEvansville, IN · 4 clinicians
Industry payments (Open Payments)
- 2025$84.17 · 3 payments from 1 company
- 2024$36.08 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bausch & Lomb Americas Inc. | $84.17 | 3 |
What the 2025 payments were for
- Food and Beverage$84.17 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 99 optometrists in Evansville · All optometrists in Indiana