Mark S. Riederer, D.D.S.
NPI 1366465882ActiveIndividual· Dentist, General Practice· Juneau, AK
Opted out of Medicare from July 2026 to July 2028. Dentist, General Practice (D.D.S.) in Juneau, Alaska, licensed in AK, with an NPI issued in July 2006. Part D covered 95 prescriptions written in 2024, 42% of them generic. Dentsply Sirona Inc was the largest of 3 companies reporting payments in 2024, $336.73 in all, mostly food and beverage.
Overview
| NPI | 1366465882 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.D.S. |
| Sole proprietor | Yes |
| NPI issued | Jul 25, 2006 |
| Last updated in NPPES | Jul 9, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dentist, General Practice Primary | 1223G0001X | AA651 | AK |
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 31, 2026 – Jul 31, 2028 |
| 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) | 95 · 117 30-day fills |
|---|---|
| Patients | 43 |
| Total drug cost | $641.70 |
| Generic share | 42% of claims |
Industry payments (Open Payments)
- 2024$336.73 · 5 payments from 3 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Dentsply Sirona Inc | $146.30 | 2 |
| Ultradent Products Inc | $140.43 | 2 |
| Patterson Companies, Inc. | $50.00 | 1 |
What the 2024 payments were for
- Food and Beverage$196.30 · 3 payments
- Gift$140.43 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 26 general dentists in Juneau · All general dentists in Alaska