Charles Grimshaw, MD
Orthopaedic Surgery · Saint Louis, MONPI 1851590673
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $77,307 of the $88,726 with a category attached, or 87.1%. Zimmer Biomet accounts for 98.4% of it on its own, with 22 other manufacturers making up the rest. Reporting peaked in 2019 at $31,764 and has fallen 98.6% since, to $434 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 190 payments — averaging $466.98 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Zimmer Biomet$87K
- Stryker$215
- Pacira Therapeutics, Inc.$197
- Seaspine Orthopedics Corporation$154
- Johnson & Johnson$147
- Smith+Nephew$128
- plus $609 from 17 others
What the payments were for
- Consulting fees$77,30787%
- Travel & lodging$7,6469%
- Food & beverage$3,5744%
- Education$1990%
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 |
|---|---|---|
| Zimmer Biomet | 132 | $87,277 |
| Stryker(2 entities) | 6 | $215 |
| Pacira Therapeutics, Inc. | 12 | $197 |
| Seaspine Orthopedics Corporation | 4 | $154 |
| Johnson & Johnson(2 entities) | 7 | $147 |
| Smith+Nephew | 2 | $128 |
| Elite Orthopedics, LLC | 4 | $112 |
| KARL Storz Endoscopy-america | 1 | $85 |
| Heraeus Medical, LLC. | 3 | $60 |
| KCI USA, Inc. | 3 | $49 |
| Heron Therapeutics, Inc. | 2 | $44 |
| Radius Health, Inc. | 2 | $35 |
| Solventum Corporation | 1 | $31 |
| International Rehabilitative Sciences, Inc | 1 | $25 |
| Curonix LLC | 1 | $23 |
| Zimvie Inc. | 1 | $22 |
| Ferring Pharmaceuticals Inc. | 2 | $22 |
| Pacira Pharmaceuticals Incorporated | 1 | $21 |
| Fidia Pharma USA Inc. | 1 | $20 |
| Vertex | 1 | $18 |
| Convatec Inc. | 1 | $16 |
| Sanofi-aventis U.S. LLC | 1 | $13 |
| Arteriocyte Medical Systems, Inc. | 1 | $12 |
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.
- AccuFill$60,849
- Juggerknotless Soft Anchor$16,058
- Subchondroplasty Knee Kit$6,500
- DeNovo$5,625
- Quatro X$267
- GPS III PLATELET CONCENTRATION SYSTEM$146
- REAL INTELLIGENCE$105
- Journey II$105
- Tandem$105
How this compares
$88,726 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-AcetaminophenOxycodone Hcl/Acetaminophen | 204 | $2,310 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 53 | $675 |
| Meloxicam | 88 | $356 |
| Oxycodone Hcl | 51 | $320 |
| Gabapentin | 13 | $122 |
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.