Mark R. Teunis Sr., OD
NPI 1871517227ActiveIndividual· Optometrist· Hagerstown, MD
Optometrist (OD) in Hagerstown, Maryland, trained at Southern College of Optometry (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $10,644 for 17 claims, against $6,062 paid for services in 2024. Sun Pharmaceutical Industries Inc. reported $25.14 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1871517227 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | Yes |
| NPI issued | Jul 27, 2006 |
| Last updated in NPPES | Jul 15, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | TA0996 | MD |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 90 |
|---|---|
| Services billed | 93 across 7 procedure codes |
| Paid by Medicare | $6,062 |
Part D prescriptions in 2024
| Prescriptions (claims) | 17 · 35 30-day fills |
|---|---|
| Total drug cost | $10,644 |
Education and affiliations
| Medical school | Southern College of Optometry |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Optometry |
Industry payments (Open Payments)
- 2025$25.14 · 1 payment from 1 company
- 2024$125.00 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sun Pharmaceutical Industries Inc. | $25.14 | 1 |
What the 2025 payments were for
- Food and Beverage$25.14 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 47 optometrists in Hagerstown · All optometrists in Maryland