John Davis, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) · Houston, TXNPI 1003858127
Payments from drug & device makers
What this record shows
The money is spread across several categories — other (57.4%), food and beverage and consulting fees — rather than concentrated in one kind of arrangement. Angiodynamics, Inc. accounts for 71.0% of it on its own, with 53 other manufacturers making up the rest. Among thoracic surgery (cardiothoracic vascular surgery) clinicians in TX 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 559 payments — averaging $139.29 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Angiodynamics, Inc.$55K
- Endologix LLC$9K
- Medtronic$6K
- Cvrx, Inc.$1K
- Biotronik Inc.$1K
- Bard Peripheral Vascular, Inc.$413
- plus $5K from 48 others
Across 6 payments — averaging $3474.17 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Atricure, Inc.$21K
What the payments were for
- Consulting fees$8,25011%
- Travel & lodging$4,3776%
- Food & beverage$20,57026%
- Other$44,66757%
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.
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.
- Auryon Laser System 100-120 Vac$50,843
- Torus Stent Graft System$8,695
- ENDOCROSS Device$8,381
- IN.PACT Admiral$1,885
- Barostim Neo System$1,377
- AngioVac$1,341
- AlphaVac$578
- COREVALVE EVOLUT R$473
- CoreValve Evolut$424
- ENROUTE Transcarotid Neuroprotection System$397
- Ovation iX Iliac Stent Graft$322
- LIMFLOW SYSTEM$291
- Passeo-18$277
- Pulsar-18 T3$277
- ENROUTE Transcarotid Stent$258
- Abre$250
- FLOWTRIEVER CATHETER, S$160
- CT THROMBECTOMY SYSTEM KIT$160
- CareLink$150
- AngioJet Ultra 5000A$142
How this compares
$77,864 in reported general payments places this provider in the 90th percentile of 424 thoracic surgery (cardiothoracic vascular surgery) providers in Texas.
See all thoracic surgery (cardiothoracic vascular surgery) providers in Texas →
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 |
|---|---|---|
| XareltoRivaroxaban | 29 | $18,688 |
| ClopidogrelClopidogrel Bisulfate | 80 | $515 |
| Methylprednisolone | 26 | $213 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| Johnson & JohnsonXarelto | $95 | $18,68829 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 90th percentile of 424 thoracic surgery (cardiothoracic vascular surgery) providers in Texas.
Other thoracic surgery (cardiothoracic vascular surgery) in Houston
- Michael ReardonHouston$713K
- Danny RamzyHouston$527K
- Randall WolfHouston$283K
- Min KimHouston$185K
- Marc MoonHouston$142K
- Ismael Salas de ArmasHouston$121K
- Shawn GrothHouston$110K
- Mahesh RamchandaniHouston$110K
- Gabriel LoorHouston$106K
- Mara AntonoffHouston$104K
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.