Christyn Marshall, DPM
Primary Podiatric Medicine · Danville, CANPI 1376958405
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $2,136 of the $3,336 with a category attached, or 64.0%. 25 manufacturers reported payments, led by Evolution Surgical, Inc at 37.3% of the total. Reporting peaked in 2021 at $1,444 and has fallen 67.9% since, to $464 in 2025.
Across 61 payments — averaging $54.69 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Evolution Surgical, Inc$1K
- Bioventus LLC$370
- Amgen$275
- Treace Medical Concepts, Inc.$238
- Zimmer Biomet$227
- Exactech, Inc.$137
- plus $845 from 19 others
What the payments were for
- Food & beverage$2,13664%
- Education$1,20036%
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 |
|---|---|---|
| Evolution Surgical, Inc | 2 | $1,244 |
| Bioventus LLC | 9 | $370 |
| Amgen(2 entities) | 3 | $275 |
| Treace Medical Concepts, Inc. | 5 | $238 |
| Zimmer Biomet | 6 | $227 |
| Exactech, Inc. | 1 | $137 |
| Musculoskeletal Transplant Foundation Inc. | 2 | $123 |
| Integra Lifesciences Corporation | 5 | $105 |
| Mimedx Group, Inc. | 4 | $104 |
| Alfasigma USA, Inc. | 4 | $66 |
| Paragon 28, Inc. | 2 | $63 |
| Orthofix Medical, Inc. | 3 | $55 |
| Anika Therapeutics, Inc. | 1 | $46 |
| Smith+Nephew | 2 | $45 |
| Crossroads Extremity Systems, LLC | 2 | $43 |
| Sanara Medtech Inc. | 1 | $37 |
| Stryker | 1 | $22 |
| Medtronic | 1 | $21 |
| Johnson & Johnson | 1 | $20 |
| Paratek Pharmaceuticals, Inc. | 1 | $19 |
| Organogenesis Inc. | 1 | $18 |
| Terumo BCT, Inc. | 1 | $17 |
| Stimwave Technologies Incorporated | 1 | $15 |
| Convatec Inc. | 1 | $13 |
| Arthrosurface Incorporated | 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.
- KRYSTEXXA$247
- TMC NANOPLASTY SYSTEM$136
- Exogen$135
How this compares
$3,336 in reported general payments places this provider in the 80th percentile of 59 primary podiatric medicine providers in California.
See all primary podiatric medicine 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 |
|---|---|---|
| Colchicine | 14 | $358 |
| Meloxicam | 41 | $126 |
| Diclofenac Sodium | 18 | $105 |
Paid to pharmacies, not to this prescriber.
Other primary podiatric medicine in Danville
- James WangLos Angeles$250K
- Adam ShapiroUpland$21K
- Ali GhorbanifarajzadehBakersfield$17K
- Abid ChaudhryArleta$11K
- Matthew GarrisonSacramento$7K
- Linh HuynhTurlock$7K
- Yvette CanabaSantee$5K
- David KhakshoorLos Angeles$4K
- Katrina SergeevaVista$4K
- Sloan GordonRancho Mirage$3K
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.