Marc Joseph Geissberger, DDS, MA
NPI 1093817967ActiveIndividual· Dentist, General Practice· Greenbrae, CA
Dentist, General Practice (DDS, MA) in Greenbrae, California, licensed in CA, with an NPI issued in September 2006. Solventum Corporation was the largest of 7 companies reporting payments in 2025, $91,658 in all, mostly honoraria.
Overview
| NPI | 1093817967 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DDS, MA |
| Sole proprietor | No |
| NPI issued | Sep 2, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dentist, General Practice Primary | 1223G0001X | 39639 | 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 |
|---|
Industry payments (Open Payments)
- 2025$91,658 · 58 payments from 7 companies
- 2024$93,596 · 58 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Solventum Corporation | $47,736 | 30 |
| Ultradent Products Inc | $23,300 | 13 |
| Gc America Inc. | $11,109 | 7 |
| Den-Mat Holdings, LLC | $5,000 | 3 |
| Voco America Inc. | $4,312 | 3 |
What the 2025 payments were for
- Honoraria$37,250 · 15 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$24,500 · 5 payments
- Compensation for serving as faculty or as a speaker for a medical education program$18,000 · 5 payments
- Travel and Lodging$5,967 · 12 payments
- Consulting Fee$3,500 · 4 payments
- Food and Beverage$2,053 · 15 payments
- Gift$388.10 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 16 general dentists in Greenbrae · All general dentists in California