John Hallmark, MD
NPI 1588307516ActiveIndividual· Surgery· Charleston, SC
Surgery (MD) in Charleston, South Carolina, licensed in SC, with an NPI issued in April 2022. Part D covered 44 prescriptions written in 2024, 100% of them generic. Davol Inc. was the largest of 2 companies reporting payments in 2025, $313.44 in all, mostly food and beverage.
Overview
| NPI | 1588307516 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 18, 2022 |
| Last updated in NPPES | Jun 10, 2022 |
| Certified by provider | Jun 9, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | LL88000 | SC |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 Order and Referring Only - General Surgery (SC) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 44 · 45 30-day fills |
|---|---|
| Patients | 33 |
| Total drug cost | $233.19 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
- 2025$313.44 · 5 payments from 2 companies
- 2024$196.88 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Davol Inc. | $286.50 | 4 |
| Atricure, Inc. | $26.94 | 1 |
What the 2025 payments were for
- Food and Beverage$313.44 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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