Esther Oak, DMD
NPI 1891303830ActiveIndividual· Dentist, General Practice· Columbia, MD
Opted out of Medicare from October 2025 to October 2027. Dentist, General Practice (DMD) in Columbia, Maryland, licensed in MD, with an NPI issued in July 2020. Part D covered 21 prescriptions written in 2024, 100% of them generic. Dentsply Sirona Inc was the largest of 3 companies reporting payments in 2025, $187.40 in all, mostly food and beverage.
Overview
| NPI | 1891303830 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DMD |
| Sole proprietor | No |
| NPI issued | Jul 15, 2020 |
| Last updated in NPPES | Sep 15, 2025 |
| Certified by provider | Sep 15, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dentist, General Practice Primary | 1223G0001X | 18843 | 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 |
|---|---|
| Opt-out | Opted out Oct 30, 2025 – Oct 30, 2027 |
| Can order and refer | No |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Part D prescriptions in 2024
| Prescriptions (claims) | 21 · 21 30-day fills |
|---|---|
| Patients | 18 |
| Total drug cost | $87.34 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
- 2025$187.40 · 5 payments from 3 companies
- 2024$327.52 · 9 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Dentsply Sirona Inc | $73.84 | 2 |
| Patterson Companies, Inc. | $70.09 | 2 |
| Midmark Corporation | $43.47 | 1 |
What the 2025 payments were for
- Food and Beverage$187.40 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 97 general dentists in Columbia · All general dentists in Maryland