Gregory S. Simpson, D.M.D.
NPI 1689881435ActiveIndividual· Dentist, Endodontics· Columbus, OH
Dentist, Endodontics (D.M.D.) in Columbus, Ohio, licensed in OH, with an NPI issued in May 2007. Part D covered 98 prescriptions written in 2024, 100% of them generic. Vertex Pharmaceuticals Incorporated reported $26.43 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1689881435 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.M.D. |
| Sole proprietor | No |
| NPI issued | May 17, 2007 |
| Last updated in NPPES | Dec 6, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dentist, Endodontics Primary | 1223E0200X | 21968 | OH |
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 |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 98 · 98 30-day fills |
|---|---|
| Patients | 87 |
| Total drug cost | $375.09 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
- 2025$26.43 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vertex Pharmaceuticals Incorporated | $26.43 | 1 |
What the 2025 payments were for
- Food and Beverage$26.43 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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