Jeffrey Rentz, MD
General Surgery · Billings, MTNPI 1851363667
Payments from drug & device makers
What this record shows
This record is dominated by education: $100,500 of the $153,136 with a category attached, or 65.6%. Intuitive Surgical accounts for 99.4% of it on its own, with 18 other manufacturers making up the rest. Reporting peaked in 2024 at $52,652 and has fallen 61.8% since, to $20,129 in 2025.
Across 241 payments — averaging $635.42 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$152K
- Kls-martin L.p.$273
- Boston Scientific$81
- Olympus America Inc.$79
- AbbVie$76
- Sioux Surgical Inc$59
- plus $297 from 13 others
What the payments were for
- Speaking & faculty fees$30,50020%
- Travel & lodging$12,3888%
- Food & beverage$9,7486%
- Education$100,50066%
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 |
|---|---|---|
| Intuitive Surgical | 212 | $152,272 |
| Kls-martin L.p. | 3 | $273 |
| Boston Scientific | 4 | $81 |
| Olympus America Inc. | 3 | $79 |
| AbbVie(2 entities) | 4 | $76 |
| Sioux Surgical Inc | 1 | $59 |
| Solventum Corporation | 2 | $42 |
| BD | 1 | $33 |
| Davol Inc. | 1 | $27 |
| Octapharma USA, Inc. | 1 | $25 |
| KCI USA, Inc. | 1 | $24 |
| Focal Therapeutics, Inc. | 1 | $22 |
| Heron Therapeutics, Inc. | 1 | $22 |
| Smith+Nephew | 1 | $22 |
| Enterra Medical, Inc. | 1 | $21 |
| Endomagnetics Ltd | 1 | $17 |
| Atricure, Inc. | 1 | $16 |
| Medtronic | 1 | $13 |
| Integra Lifesciences Corporation | 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.
- Da Vinci Surgical System$124,431
- DA VINCI SP$13,678
- DAVINCI XI$7,500
- ION$3,000
How this compares
Too few general surgery providers in Montanato place this figure against a meaningful peer group, so we don't.
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 |
|---|---|---|
| Methocarbamol | 25 | $109 |
| Oxycodone Hcl | 23 | $57 |
| Tramadol Hcl | 24 | $23 |
Paid to pharmacies, not to this prescriber.
Other general surgery in Billings
- Daniel DernbachBillings$296
- Bryan PotterBillings$0
- John PenderBillings$0
- Gardner SmithLewistown$0
- Stephen MilheimShelby$0
- Joe LealGlendive$0
- Lance ErcanbrackLibby$0
- Philip CardanWhitefish$0
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.