Carl J. Gassmann, MD, DDS.
Opted out of Medicare from March 2018 to March 2028. Dentist, Oral and Maxillofacial Surgery (MD, DDS.) in Scottsdale, Arizona, licensed in AZ, with an NPI issued in January 2007. Part D covered 389 prescriptions written in 2024, 100% of them generic. Stryker Corporation was the largest of 3 companies reporting payments in 2025, $153.41 in all, mostly food and beverage.
Overview
| NPI | 1275681330 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, DDS. |
| Sole proprietor | Yes |
| NPI issued | Jan 8, 2007 |
| Last updated in NPPES | Sep 11, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dentist, Oral and Maxillofacial Surgery Primary | 1223S0112X | D4868 | AZ |
| Oral & Maxillofacial Surgery | 204E00000X | 23387 | AZ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 Mar 2, 2018 – Mar 2, 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) | 389 · 389 30-day fills |
|---|---|
| Patients | 238 |
| Total drug cost | $1,259 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
- 2025$153.41 · 3 payments from 3 companies
- 2024$38.54 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $92.10 | 1 |
| Pacira Pharmaceuticals Incorporated | $32.63 | 1 |
| Straumann USA LLC | $28.68 | 1 |
What the 2025 payments were for
- Food and Beverage$124.73 · 2 payments
- Gift$28.68 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Dentist, Oral and Maxillofacial Surgery providers in Arizona →