Mallory B. Thornton, O.D.
NPI 1013905207ActiveIndividual· Optometrist· Houston, TX
Optometrist (O.D.) in Houston, Texas, trained at University of Houston - College of Optometry (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $100,098 for 319 claims, against $46,299 paid for services in 2024. Alcon Vision LLC was the largest of 7 companies reporting payments in 2025, $420.42 in all, mostly food and beverage.
Overview
| NPI | 1013905207 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | No |
| NPI issued | Oct 11, 2005 |
| Last updated in NPPES | Apr 21, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 5587TG | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 312 |
|---|---|
| Services billed | 762 across 22 procedure codes |
| Paid by Medicare | $46,299 |
Part D prescriptions in 2024
| Prescriptions (claims) | 319 · 574 30-day fills |
|---|---|
| Patients | 104 |
| Total drug cost | $100,098 |
| Generic share | 43% of claims |
Education and affiliations
| Medical school | University of Houston - College of Optometry |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Optometry |
Medical group
- Westheimer Vision Services, PLLCHouston, TX · 3 clinicians
Industry payments (Open Payments)
- 2025$420.42 · 18 payments from 7 companies
- 2024$296.59 · 15 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $231.01 | 9 |
| Tarsus Pharmaceuticals, Inc. | $52.55 | 2 |
| Bausch & Lomb Americas Inc. | $42.22 | 2 |
| Johnson & Johnson Vision Care, Inc. | $30.54 | 2 |
| Dompe US, Inc. | $25.49 | 1 |
What the 2025 payments were for
- Food and Beverage$420.42 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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