Mark Winkle Darnell, D.D.S.
NPI 1528263589ActiveIndividual· Dentist, General Practice· Hollister, CA
Dentist, General Practice (D.D.S.) in Hollister, California, licensed in CA, with an NPI issued in June 2007. Part D covered 47 prescriptions written in 2024, 94% of them generic. Align Technology, Inc. reported $67.98 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1528263589 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.D.S. |
| Sole proprietor | Yes |
| NPI issued | Jun 19, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dentist, General Practice Primary | 1223G0001X | 48899 | CA |
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) | 47 · 48 30-day fills |
|---|---|
| Patients | 30 |
| Total drug cost | $178.95 |
| Generic share | 94% of claims |
Industry payments (Open Payments)
- 2025$67.98 · 6 payments from 1 company
- 2024$92.02 · 3 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Align Technology, Inc. | $67.98 | 6 |
What the 2025 payments were for
- Food and Beverage$67.98 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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