Barth Riedel, MD
Hand Surgery · Pomona, CANPI 1558574491
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (52.0%), consulting fees and education — rather than concentrated in one kind of arrangement. Arthrex accounts for 73.9% of it on its own, with 17 other manufacturers making up the rest. 2025 is the largest year on record at $121,254, 8.7 times the $13,909 reported in 2019. Among hand surgery clinicians in CA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 281 payments — averaging $870.22 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Arthrex$181K
- Skeletal Dynamics Inc$29K
- Extremity Medical$29K
- Empire Medical, Inc$5K
- Vital Orthopedics LLC$375
- Acumed LLC$281
- plus $1K from 12 others
Across 3 payments — averaging $1520.00 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Arthrex$5K
What the payments were for
- Consulting fees$61,76825%
- Speaking & faculty fees$127,20452%
- Travel & lodging$20,7899%
- Food & beverage$7,2823%
- Education$27,49011%
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 |
|---|---|---|
| Arthrex | 204 | $180,717 |
| Skeletal Dynamics Inc | 23 | $28,582 |
| Extremity Medical | 11 | $28,557 |
| Empire Medical, Inc | 14 | $4,671 |
| Vital Orthopedics LLC | 5 | $375 |
| Acumed LLC | 4 | $281 |
| Sportstek Medical, Inc | 2 | $237 |
| Axogen | 5 | $234 |
| Stryker | 3 | $202 |
| Trimed, Inc. | 1 | $143 |
| Johnson & Johnson | 1 | $137 |
| Bone Support Inc. | 1 | $132 |
| Endo Pharmaceuticals Inc. | 1 | $90 |
| Integra Lifesciences Corporation | 2 | $62 |
| Alafair Biosciences, Inc. | 1 | $34 |
| Arthrosurface Incorporated | 1 | $30 |
| Solventum Corporation | 1 | $28 |
| KCI USA, Inc. | 1 | $20 |
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.
- KinematX$28,557
- Geminus$27,987
- Align$27,987
- IJS$27,987
- Implate$27,987
- CAPITAL CONSUMABLES CONSUMABLES RF BRF$188
- NA$137
- CERAMENTBONE VOID FILLER$132
- CERAMENT G$132
- ACUMED$129
- PANGEA$129
- AVANCE NERVE GRAFT$125
How this compares
$244,532 in reported general payments places this provider in the 95th percentile of 249 hand surgery providers in California.
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 |
|---|---|---|
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 19 | $237 |
Paid to pharmacies, not to this prescriber.
Other hand surgery in Pomona
- Steven ShinLos Angeles$2.8M
- Amy LaddStanford$1.4M
- Emilie CheungStanford$1.1M
- Andrew HartmanOceanside$957K
- Nancy LynchSan Mateo$862K
- Jeffrey YaoRedwood City$622K
- Prosper BenhaimLos Angeles$492K
- Wayne PanOakland$423K
- Nathan HoekzemaClovis$400K
- Robin KamalStanford$343K
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.