Mark G. Birkmann, O.D.
NPI 1609880889ActiveIndividual· Optometrist· Georgetown, TX
Optometrist (O.D.) in Georgetown, Texas, trained at University of Missouri St Louis - School of Optometry (class of 1992). In 2024 Medicare paid $33,923 for 261 patients, and Part D covered 252 of their prescriptions, 70% of them generic. Bausch & Lomb Americas Inc. was the largest of 3 companies reporting payments in 2025, $106.88 in all, mostly food and beverage.
Overview
| NPI | 1609880889 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 27, 2006 |
| Last updated in NPPES | Mar 17, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 9137TG | TX |
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 (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 261 |
|---|---|
| Services billed | 651 across 19 procedure codes |
| Paid by Medicare | $33,923 |
Part D prescriptions in 2024
| Prescriptions (claims) | 252 · 400 30-day fills |
|---|---|
| Patients | 47 |
| Total drug cost | $9,408 |
| Generic share | 70% of claims |
Education and affiliations
| Medical school | University of Missouri St Louis - School of Optometry |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Optometry |
Industry payments (Open Payments)
- 2025$106.88 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bausch & Lomb Americas Inc. | $45.35 | 2 |
| Rxsight Inc | $38.65 | 1 |
| Optos, Inc. | $22.88 | 1 |
What the 2025 payments were for
- Food and Beverage$84.00 · 3 payments
- Entertainment$22.88 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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