David Greenberg, DPM
Foot & Ankle Surgery · Riverside, RINPI 1801975545
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $5,025 of the $6,035 with a category attached, or 83.3%. 14 manufacturers reported payments, led by Biotissue Holdings Inc. at 55.8% of the total. Reporting peaked in 2022 at $3,006 and has fallen 70.5% since, to $888 in 2025.
Across 123 payments — averaging $49.06 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Biotissue Holdings Inc.$3K
- Smith+Nephew$971
- Stryker$351
- Treace Medical Concepts, Inc.$325
- Orthofix Medical, Inc.$311
- Zimmer Biomet$164
- plus $546 from 8 others
What the payments were for
- Travel & lodging$1,01017%
- Food & beverage$5,02583%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Biotissue Holdings Inc. | 68 | $3,366 |
| Smith+Nephew | 25 | $971 |
| Stryker | 3 | $351 |
| Treace Medical Concepts, Inc. | 3 | $325 |
| Orthofix Medical, Inc. | 11 | $311 |
| Zimmer Biomet | 2 | $164 |
| Musculoskeletal Transplant Foundation Inc. | 1 | $162 |
| Paratek Pharmaceuticals, Inc. | 1 | $109 |
| Amniox Medical, Inc. | 1 | $98 |
| Acumed LLC | 2 | $76 |
| Misonix Inc | 3 | $43 |
| Lifenet Health | 1 | $24 |
| Integra Lifesciences Corporation | 1 | $22 |
| Acell, Inc. | 1 | $11 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- NEOX$277
- CLARIX$277
- Stravix$260
- Grafix$260
- PROPHECY$150
- PROstep$150
- Oasis$145
- Prokera$132
- AmnioGraft$132
- TMC NANOPLASTY SYSTEM$130
- Physio-Stim$129
- Alps Plates and Instruments$116
- GrafixPL$115
- ORTHOLOC 3DI$113
- NUZYRA$109
- TMC SPEEDMTP$103
How this compares
$6,035 in reported general payments places this provider in the 70th percentile of 58 foot & ankle surgery providers in Rhode Island.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Terbinafine Hcl | 102 | $1,124 |
| Ketoconazole | 54 | $1,020 |
| Methylprednisolone | 95 | $729 |
| Ammonium Lactate | 46 | $677 |
| Gabapentin | 47 | $547 |
| Ibuprofen | 63 | $339 |
| Silver Sulfadiazine | 37 | $317 |
| Cephalexin | 44 | $266 |
| Meloxicam | 43 | $160 |
| Duloxetine Hcl | 13 | $124 |
| Triamcinolone Acetonide | 12 | $112 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 16 | $94 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 16 | $94 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 13 | $87 |
Paid to pharmacies, not to this prescriber.
Other foot & ankle surgery in Riverside
- David RuggieroRiverside$16K
- Christopher DigiovanniProvidence$665K
- Anthony MechrefeWarwick$92K
- Douglas GlodEast Providence$74K
- Matthew LawrencePawtucket$38K
- Michal SzparaPawtucket$37K
- Michael ReuterBristol$34K
- Jason TartaglioneWarwick$21K
- Brian PontarelliProvidence$15K
- James AppletonPawtucket$10K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.