G. William Keller, D.D.S.
NPI 1912120676ActiveIndividual· Dentist, Periodontics· Wilmington, DE
Dentist, Periodontics (D.D.S.) in Wilmington, Delaware, licensed in DE, with an NPI issued in April 2007. Part D covered 357 prescriptions written in 2024, 98% of them generic. Straumann USA LLC was the largest of 2 companies reporting payments in 2025, $296.10 in all, mostly food and beverage.
Overview
| NPI | 1912120676 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.D.S. |
| Sole proprietor | No |
| NPI issued | Apr 11, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dentist, Periodontics Primary | 1223P0300X | G1-0000899 | DE |
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 - Oral Surgery (DE) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 357 · 387 30-day fills |
|---|---|
| Patients | 183 |
| Total drug cost | $3,058 |
| Generic share | 98% of claims |
Industry payments (Open Payments)
- 2025$296.10 · 7 payments from 2 companies
- 2024$323.10 · 4 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Straumann USA LLC | $274.20 | 6 |
| Biohorizons Implant Systems Inc. | $21.90 | 1 |
What the 2025 payments were for
- Food and Beverage$206.07 · 4 payments
- Gift$90.03 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 20 periodontists in Wilmington · All periodontists in Delaware