Stewart Chumbley
Family · Bozeman, MTNPI 1316351810
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $4,778 of the $5,325 with a category attached, or 89.7%. It is spread thinly across 34 manufacturers, the largest accounting for just 14.6% — the pattern of someone who eats at a lot of different presentations. Among family clinicians in MT 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 165 payments — averaging $32.27 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$780
- Teleflex LLC$720
- Axonics, Inc.$623
- Astellas Pharma US Inc$533
- Boston Scientific$529
- AbbVie$437
- plus $2K from 28 others
What the payments were for
- Travel & lodging$3356%
- Food & beverage$4,77890%
- Education$2124%
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 |
|---|---|---|
| Medtronic | 12 | $780 |
| Teleflex LLC | 9 | $720 |
| Axonics, Inc. | 14 | $623 |
| Astellas Pharma US Inc | 28 | $533 |
| Boston Scientific | 7 | $529 |
| AbbVie(2 entities) | 19 | $437 |
| Urogen Pharma, Inc. | 10 | $199 |
| Johnson & Johnson | 9 | $196 |
| Astellas Pharma Global Development | 2 | $118 |
| Pfizer | 6 | $99 |
| Endo USA, Inc. | 4 | $85 |
| Procept Biorobotics Corporation | 2 | $84 |
| Sumitomo Pharma America, Inc. | 4 | $82 |
| Laborie Medical Technologies Corp. | 5 | $76 |
| Tolmar Pharmaceuticals, Inc. | 2 | $68 |
| Blue Earth Diagnostics | 2 | $63 |
| Alnylam Pharmaceuticals Inc. | 3 | $57 |
| Merck | 2 | $56 |
| Myriad Genetic Laboratories, Inc. | 4 | $53 |
| 180 Medical, Inc. | 2 | $53 |
| Pacira Pharmaceuticals Incorporated | 2 | $50 |
| Novartis | 2 | $49 |
| Janssen Scientific Affairs, LLC | 1 | $39 |
| AstraZeneca | 2 | $39 |
| Bayer | 2 | $34 |
| Endo Pharmaceuticals Inc. | 2 | $34 |
| Tolmar, Inc. | 1 | $33 |
| KARL Storz Endoscopy-america | 1 | $25 |
| C. R. Bard, Inc. & Subsidiaries | 1 | $23 |
| Cycle Pharmaceuticals Inc | 1 | $21 |
| Immunitybio, Inc. | 1 | $21 |
| Coloplast | 1 | $16 |
| Olympus America Inc. | 1 | $15 |
| Myovant Sciences Inc. | 1 | $15 |
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.
- UroLift$561
- Axonics$275
- Lumenis Pulse 120H$258
- INTERSTIM$208
How this compares
$5,325 in reported general payments places this provider in the 95th percentile of 481 family providers in Montana.
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 |
|---|---|---|
| MyrbetriqMirabegron | 280 | $185,352 |
| Tamsulosin Hcl | 626 | $10,569 |
| Potassium Citrate ErPotassium Citrate | 58 | $5,527 |
| Finasteride | 368 | $5,379 |
| Mirabegron ErMirabegron | 15 | $5,308 |
| Testosterone | 20 | $3,324 |
| Solifenacin Succinate | 102 | $3,091 |
| Tolterodine Tartrate ErTolterodine Tartrate | 40 | $1,996 |
| Dutasteride | 63 | $1,835 |
| Testosterone Cypionate | 41 | $1,775 |
| Alfuzosin Hcl ErAlfuzosin Hcl | 88 | $1,699 |
| Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst | 99 | $1,326 |
| Chlorthalidone | 74 | $964 |
| CefuroximeCefuroxime Axetil | 30 | $351 |
| Oxybutynin Chloride ErOxybutynin Chloride | 20 | $345 |
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 |
|---|---|---|
| Astellas Pharma US IncMyrbetriq | $533 | $185,352280 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 95th percentile of 481 family providers in Montana.
Other family in Bozeman
- Mara ZelloBozeman$31K
- Sherri NassarBozeman$8K
- Amy AndersonBozeman$5K
- Katherine MistrettaBozeman$3K
- Amanda MurrayGreat Falls$101K
- Kara AddisonHelena$50K
- Lacy TangedahlBillings$31K
- Michelle Weaver KnowlesMissoula$14K
- Jessica HavensHelena$11K
- Tara WellsHelena$10K
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.