Nicholas H. Mast, MD
NPI 1932399698ActiveIndividual· Orthopaedic Surgery· Novato, CA
Opted out of Medicare from July 2022 to July 2028. Orthopaedic Surgery (MD) in Novato, California, licensed in CA, NV, UT and CO, with an NPI issued in July 2007. Part D covered 261 prescriptions written in 2024, 100% of them generic. Medacta USA, Inc. reported $22,666 in payments in 2025, mostly consulting fees.
Overview
| NPI | 1932399698 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 30, 2007 |
| Last updated in NPPES | Jan 9, 2023 |
| Certified by provider | Jan 9, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | A98951 | CA |
| Orthopaedic Surgery | 207X00000X | 12254 | NV |
| Orthopaedic Surgery | 207X00000X | 5401485-1205 | UT |
| Orthopaedic Surgery | 207X00000X | DR.0061770 | CO |
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 Jul 1, 2022 – Jul 1, 2028 |
| Can order and refer | Yes |
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) | 261 · 397 30-day fills |
|---|---|
| Patients | 85 |
| Total drug cost | $6,862 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
- 2025$22,666 · 30 payments from 1 company
- 2024$3,692 · 15 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medacta USA, Inc. | $22,666 | 30 |
What the 2025 payments were for
- Consulting Fee$17,300 · 5 payments
- Travel and Lodging$4,254 · 10 payments
- Food and Beverage$1,112 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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