Cindy Nennig Mack, OD
NPI 1356434336ActiveIndividual· Optometrist· Orange Park, FL
Optometrist (OD) in Orange Park, Florida, trained at Southern College of Optometry (class of 1996). Mostly services rather than prescriptions: Medicare paid $27,139 for 240 patients in 2024, with only 30 Part D claims. Alcon Vision LLC reported $32.15 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1356434336 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | Yes |
| NPI issued | Oct 2, 2006 |
| Last updated in NPPES | Oct 16, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | FL0PC3028 | FL |
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 (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 240 |
|---|---|
| Services billed | 493 across 6 procedure codes |
| Paid by Medicare | $27,139 |
Part D prescriptions in 2024
| Prescriptions (claims) | 30 · 32 30-day fills |
|---|---|
| Patients | 16 |
| Total drug cost | $8,221 |
| Generic share | 37% of claims |
Education and affiliations
| Medical school | Southern College of Optometry |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Optometry |
Medical group
- Mack Eye Care PAOrange Park, FL · 4 clinicians
Industry payments (Open Payments)
- 2025$32.15 · 1 payment from 1 company
- 2024$71.86 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $32.15 | 1 |
What the 2025 payments were for
- Food and Beverage$32.15 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 optometrists in Orange Park · All optometrists in Florida