Mark Machen, OD
NPI 1740700707ActiveIndividual· Optometrist· Marietta, GA
Optometrist (OD) in Marietta, Georgia, trained at Southern College of Optometry (class of 2017). In 2024 Medicare paid $8,993 for 67 patients, and Part D covered 57 of their prescriptions, 56% of them generic. Sun Pharmaceutical Industries Inc. was the largest of 7 companies reporting payments in 2025, $691.03 in all, mostly food and beverage.
Overview
| NPI | 1740700707 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | No |
| NPI issued | Jun 21, 2017 |
| Last updated in NPPES | Jun 21, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 003025 | GA |
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 (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 67 |
|---|---|
| Services billed | 140 across 14 procedure codes |
| Paid by Medicare | $8,993 |
Part D prescriptions in 2024
| Prescriptions (claims) | 57 · 68 30-day fills |
|---|---|
| Patients | 33 |
| Total drug cost | $10,370 |
| Generic share | 56% of claims |
Education and affiliations
| Medical school | Southern College of Optometry |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Optometry |
Medical group
- Windward Eye CareAlpharetta, GA · 6 clinicians
Industry payments (Open Payments)
- 2025$691.03 · 8 payments from 7 companies
- 2024$268.76 · 7 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sun Pharmaceutical Industries Inc. | $149.39 | 2 |
| Harrow Eye, LLC | $125.18 | 1 |
| Coopervision Inc. | $111.49 | 1 |
| Optos, Inc. | $107.58 | 1 |
| Lkc Technologies, Inc. | $99.61 | 1 |
What the 2025 payments were for
- Food and Beverage$583.45 · 7 payments
- Entertainment$107.58 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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