Chih Kang David Liou, DPM
Foot & Ankle Surgery · Somerville, MANPI 1487107769
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 99.6% of the total across 112 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 28 manufacturers reported payments, led by Stryker at 37.0% of the total. 2025 is the largest year on record at $1,328, more than ten times the $97 reported in 2019.
Across 112 payments — averaging $31.99 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Stryker$1K
- AbbVie$565
- Treace Medical Concepts, Inc.$231
- Medtronic$230
- Bioventus LLC$141
- Amgen$124
- plus $967 from 22 others
What the payments were for
- Food & beverage$3,569100%
- Education$140%
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 |
|---|---|---|
| Stryker | 27 | $1,325 |
| AbbVie | 26 | $565 |
| Treace Medical Concepts, Inc. | 11 | $231 |
| Medtronic | 3 | $230 |
| Bioventus LLC | 1 | $141 |
| Amgen(2 entities) | 6 | $124 |
| Anika Therapeutics, Inc. | 4 | $101 |
| KCI USA, Inc. | 1 | $100 |
| Paratek Pharmaceuticals, Inc. | 4 | $67 |
| Ossio Inc | 1 | $67 |
| Convatec Inc. | 3 | $62 |
| Johnson & Johnson | 2 | $57 |
| Kerecis Limited | 2 | $53 |
| Integra Lifesciences Corporation | 3 | $50 |
| Smith+Nephew | 2 | $49 |
| Nevro Corp. | 2 | $45 |
| GRT US Holding, Inc. | 2 | $43 |
| Derma Sciences, Inc. | 1 | $40 |
| ERMI LLC | 2 | $39 |
| Bone Support Inc. | 1 | $32 |
| Medartis Inc. | 1 | $29 |
| Orthofix Medical, Inc. | 1 | $24 |
| Dynasplint Systems Inc. | 1 | $24 |
| Heron Therapeutics, Inc. | 1 | $22 |
| Acera Surgical, Inc. | 1 | $18 |
| Tactile Systems Technology Inc | 1 | $17 |
| Triad Life Sciences Inc. | 1 | $15 |
| Davol Inc. | 1 | $13 |
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
$3,583 in reported general payments places this provider in the 65th percentile of 122 foot & ankle surgery providers in Massachusetts.
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 |
|---|---|---|
| Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip | 12 | $356 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 35 | $268 |
Paid to pharmacies, not to this prescriber.
Other foot & ankle surgery in Somerville
- Harry SchneiderCambridge$174K
- Craig LareauSpringfield$115K
- David SipalaBrighton$94K
- Philip BasileCambridge$90K
- Michael SgangaNatick$90K
- Joseph FleckNorth Chelmsford$35K
- Michael SkoniecznyPlymouth$33K
- Richard BakerHyannis$16K
- Mark SlovenkaiWaltham$14K
- Jaeyoung KimBoston$14K
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.