Leo W. Mack Jr., M.D.
NPI 1669443370ActiveIndividual· Ophthalmology· Tyler, TX
Ophthalmology (M.D.) in Tyler, Texas, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1969). In 2024 Medicare paid $10,641 for 26 patients, and Part D covered 59 of their prescriptions, 66% of them generic. Intuitive Surgical, Inc. reported $57.99 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1669443370 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 30, 2006 |
| Last updated in NPPES | Dec 9, 2025 |
| Certified by provider | Dec 9, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | E4001 | 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 - Ophthalmology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 26 |
|---|---|
| Services billed | 64 across 11 procedure codes |
| Paid by Medicare | $10,641 |
Part D prescriptions in 2024
| Prescriptions (claims) | 59 · 93 30-day fills |
|---|---|
| Patients | 26 |
| Total drug cost | $3,816 |
| Generic share | 66% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 1969 |
| Medicare specialty | Ophthalmology |
Industry payments (Open Payments)
- 2025$57.99 · 1 payment from 1 company
- 2024$30.47 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $57.99 | 1 |
What the 2025 payments were for
- Food and Beverage$57.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 36 ophthalmologists in Tyler · All ophthalmologists in Texas