Michael Volk, MD
Internal Medicine · Temple, TXNPI 1679628317
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (57.8%), consulting fees and food and beverage — rather than concentrated in one kind of arrangement. Salix Pharmaceuticals, A Division Of Bausch Health US, LLC accounts for 83.5% of it on its own, with 17 other manufacturers making up the rest. Reporting peaked in 2021 at $28,518 and has fallen 99.0% since, to $295 in 2025. Among internal medicine clinicians in TX 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 106 payments — averaging $617.54 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$55K
- Boston Scientific$5K
- Fujifilm Wako Diagnostics U.S.A. Corporation$2K
- Fujifilm Healthcare Americas Corporation$2K
- Gilead$750
- AbbVie$248
- plus $928 from 12 others
Across 1 payment — averaging $35,412 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.
- Madrigal Pharmaceuticals$35K
What the payments were for
- Consulting fees$23,90037%
- Speaking & faculty fees$37,80758%
- Travel & lodging$1810%
- Food & beverage$3,4485%
- Education$60%
- Other$1180%
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 |
|---|---|---|
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 45 | $54,637 |
| Boston Scientific | 8 | $4,697 |
| Fujifilm Wako Diagnostics U.S.A. Corporation | 2 | $2,101 |
| Fujifilm Healthcare Americas Corporation | 1 | $2,100 |
| Gilead | 17 | $750 |
| AbbVie | 3 | $248 |
| Ipsen Biopharmaceuticals, Inc | 3 | $178 |
| Intercept Pharmaceuticals, Inc. | 2 | $144 |
| Shionogi Inc | 9 | $141 |
| Pentax Of America, Inc. | 6 | $133 |
| E.r. Squibb & Sons, L.L.C. | 1 | $98 |
| Mallinckrodt Hospital Products Inc. | 3 | $68 |
| Madrigal Pharmaceuticals | 1 | $55 |
| Johnson & Johnson | 1 | $25 |
| Sanofi | 1 | $23 |
| AstraZeneca | 1 | $23 |
| Covidien LP | 1 | $22 |
| Merck | 1 | $17 |
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.
- XIFAXAN$53,807
- THERASPHERE$2,250
- Wako HCC Biomarker(s) DCP and AFP-L3$2,101
- uTASWako AFP-L3$2,100
- TheraSphere Y90 Glass Microspheres 10 GBq$1,350
- GENERAL EMBOLICS$891
- Mavyret$220
- IQIRVO$124
- GENERAL - BILIARY DEVICES$119
How this compares
$65,460 in reported general payments places this provider in the 95th percentile of 7,675 internal medicine 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 |
|---|---|---|
| Spironolactone | 13 | $378 |
| Furosemide | 18 | $119 |
Paid to pharmacies, not to this prescriber.
Other internal medicine in Temple
- Hameed AliTemple$773K
- Catherine McNealTemple$187K
- Timothy MillerTemple$146K
- Spencer BerthelsenSugar Land$891K
- Marc TribbleDallas$693K
- Gary SinclairDallas$599K
- Mohammed Al-NajjarEl Paso$586K
- Han SchmidlyDallas$465K
- Hussein TawbiHouston$365K
- Hans LeeHouston$327K
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.