Arnaldo Martinez Rivera, MD
Orthopaedic Surgery · Saint Louis, MONPI 1396292348
Payments from drug & device makers
What this record shows
This record is dominated by grants: $50,000 of the $51,187 with a category attached, or 97.7%. Medtronic accounts for 98.5% of it on its own, with 7 other manufacturers making up the rest. Reporting peaked in 2024 at $50,479 and has fallen 98.7% since, to $668 in 2025. Among orthopaedic surgery clinicians in MO with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 17 payments — averaging $3010.99 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$50K
- Cerapedics Inc.$156
- Alphatec Spine, Inc$152
- Augmedics Inc.$135
- Johnson & Johnson$132
- Elite Orthopedics, LLC$116
- plus $60 from 2 others
What the payments were for
- Grants$50,00098%
- Travel & lodging$930%
- Food & beverage$1,0942%
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 |
|---|---|---|
| Medtronic | 10 | $50,435 |
| Cerapedics Inc. | 1 | $156 |
| Alphatec Spine, Inc | 1 | $152 |
| Augmedics Inc. | 1 | $135 |
| Johnson & Johnson | 1 | $132 |
| Elite Orthopedics, LLC | 1 | $116 |
| Stryker | 1 | $39 |
| Globus Medical | 1 | $21 |
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.
How this compares
$51,187 in reported general payments places this provider in the 90th percentile of 455 orthopaedic surgery providers in Missouri.
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 |
|---|---|---|
| Oxycodone Hcl | 20 | $89 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery in Saint Louis
- Jay KeenerSaint Louis$2.2M
- John WatsonSaint Louis$1.7M
- Peter ChalmersSaint Louis$603K
- Lionel MetzSaint Louis$428K
- Jon CarlsonSaint Louis$354K
- Alexander AleemSaint Louis$230K
- Rhoderic MirkinSaint Louis$209K
- Sridhar PinnamaneniSaint Louis$188K
- Kenneth SmithSaint Louis$119K
- Benjamin ZmistowskiSaint Louis$118K
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.