Mark W. Nelson, DDS MSD
NPI 1427192020ActiveIndividual· Dentist, Orthodontics and Dentofacial Orthopedics· Sammamish, WA
Dentist, Orthodontics and Dentofacial Orthopedics (DDS MSD) in Sammamish, Washington, licensed in WA, with an NPI issued in February 2007. Align Technology, Inc. was the largest of 2 companies reporting payments in 2025, $887.83 in all, mostly food and beverage.
Overview
| NPI | 1427192020 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DDS MSD |
| Sole proprietor | No |
| NPI issued | Feb 16, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dentist, Orthodontics and Dentofacial Orthopedics Primary | 1223X0400X | DE00008128 | WA |
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 |
|---|
Industry payments (Open Payments)
- 2025$887.83 · 6 payments from 2 companies
- 2024$542.45 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Align Technology, Inc. | $872.64 | 5 |
| American Orthodontics Corporation | $15.19 | 1 |
What the 2025 payments were for
- Food and Beverage$863.94 · 4 payments
- Gift$23.89 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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