Katherine Ma, MD
Foot and Ankle Surgery · Cortlandt Manor, NYNPI 1992063382
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $36,453 of the $54,446 with a category attached, or 67.0%. Arthrex accounts for 79.9% of it on its own, with 8 other manufacturers making up the rest. Among foot and ankle surgery clinicians in NY 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 139 payments — averaging $391.70 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Arthrex$44K
- Gotham Surgical Solutions & Devices, Inc.$7K
- Stryker$2K
- Treace Medical Concepts, Inc.$1K
- Smith+Nephew$579
- Bioventus LLC$150
- plus $314 from 3 others
What the payments were for
- Consulting fees$7501%
- Speaking & faculty fees$36,45367%
- Travel & lodging$6,77812%
- Food & beverage$3,8377%
- Education$6,53412%
- Gifts$940%
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 | 77 | $43,516 |
| Gotham Surgical Solutions & Devices, Inc. | 21 | $7,102 |
| Stryker(2 entities) | 16 | $1,780 |
| Treace Medical Concepts, Inc. | 17 | $1,005 |
| Smith+Nephew | 4 | $579 |
| Bioventus LLC | 1 | $150 |
| Zimmer Biomet | 1 | $143 |
| Insmed, Inc. | 1 | $138 |
| Organogenesis Inc. | 1 | $34 |
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.
- Lapiplasty System$508
- INFINITY$481
- PRIME SERIES$479
- Regeneten$435
- T2 ALPHA$164
- Durolane$150
- FAST-FIX FLEX$147
- HEALICOIL REGENESORB$147
- Dyonics Platinum$145
- Coblation Wands$145
- SPYROMITE$144
- Healicoil$144
- TAPESTRY$143
- Acufex$142
- 660HDE Image Management System$142
- NOVOSTITCH$142
- Arikayce$138
How this compares
$54,446 in reported general payments places this provider in the 95th percentile of 652 foot and ankle surgery providers in New York.
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 |
|---|---|---|
| Diclofenac Sodium | 41 | $768 |
| Meloxicam | 80 | $381 |
| Ketorolac Tromethamine | 13 | $201 |
Paid to pharmacies, not to this prescriber.
Other foot and ankle surgery in Cortlandt Manor
- James McWilliamHarrison$4.7M
- Jonathan DelandNew York$4M
- George Vitole Roy$2.5M
- Constantine DemetracopoulosNew York$888K
- Anne JohnsonNew York$815K
- Scott EllisNew York$597K
- John KennedyNew York$534K
- Michael KellerKingston$532K
- Judith BaumhauerRochester$328K
- Stuart MogulNew York$131K
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.