Michael Keller, MD
Pulmonary Disease · Lake Forest, ILNPI 1013164086
Payments from drug & device makers
Across 436 payments — averaging $22.61 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- United Therapeutics Corporation$3K
- GSK$2K
- AstraZeneca$843
- Boehringer Ingelheim$784
- Actelion Pharmaceuticals US, Inc.$656
- Bayer$369
- plus $2K from 27 others
What the payments were for
- Travel & lodging$1,12812%
- Food & beverage$8,17986%
- Education$1542%
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 |
|---|---|---|
| United Therapeutics Corporation | 21 | $2,670 |
| GSK | 150 | $2,109 |
| AstraZeneca | 51 | $843 |
| Boehringer Ingelheim | 35 | $784 |
| Actelion Pharmaceuticals US, Inc. | 22 | $656 |
| Bayer | 24 | $369 |
| Electromed, Inc. | 23 | $215 |
| Johnson & Johnson | 8 | $210 |
| Mallinckrodt Hospital Products Inc. | 11 | $206 |
| Mylan Specialty L.p. | 9 | $181 |
| Jazz Pharmaceuticals Inc. | 8 | $181 |
| Grifols USA, LLC | 7 | $164 |
| Genentech USA, Inc. | 9 | $147 |
| Harmony Biosciences LLC | 6 | $129 |
| Pfizer | 6 | $116 |
| Sanofi | 4 | $98 |
| Takeda Pharmaceuticals U.S.A., Inc. | 4 | $89 |
| Sunovion Pharmaceuticals Inc. | 7 | $86 |
| Regeneron Healthcare Solutions, Inc. | 3 | $86 |
| Baxter Healthcare | 4 | $83 |
| Intuitive Surgical | 3 | $81 |
| Philips North America LLC | 2 | $61 |
| Shionogi Inc | 2 | $57 |
| Merck | 3 | $53 |
| Teva Pharmaceuticals USA, Inc. | 3 | $40 |
| Sandoz | 2 | $30 |
| Amgen | 2 | $28 |
| Advanced Respiratory, Inc | 2 | $24 |
| Vapotherm Inc | 1 | $15 |
| Mayne Pharma Commercial LLC | 1 | $15 |
| Itamar Medical Inc | 1 | $14 |
| Bausch Health US, LLC | 1 | $13 |
| Inogen, Inc. | 1 | $6 |
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
$9,858 in reported general payments places this provider in the 75th percentile of 539 pulmonary disease providers in Illinois.
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 |
|---|---|---|
| OpsumitMacitentan | 76 | $970,484 |
| Tyvaso DpiTreprostinil | 20 | $458,587 |
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 520 | $410,689 |
| Orenitram ErTreprostinil Diolamine | 48 | $366,996 |
| AdempasRiociguat | 19 | $326,414 |
| UptraviSelexipag | 12 | $282,066 |
| Anoro ElliptaUmeclidinium Brm/Vilanterol Tr | 240 | $120,879 |
| Breztri AerosphereBudesonide/Glycopyr/Formoterol | 120 | $95,320 |
| Ambrisentan | 43 | $90,007 |
| Spiriva RespimatTiotropium Bromide | 63 | $49,612 |
| Stiolto RespimatTiotropium Br/Olodaterol Hcl | 71 | $38,191 |
| Breo ElliptaFluticasone/Vilanterol | 71 | $36,893 |
| EliquisApixaban | 34 | $27,915 |
| Tadalafil | 52 | $25,610 |
| SymbicortBudesonide/Formoterol Fumarate | 52 | $16,619 |
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 |
|---|---|---|
| Actelion Pharmaceuticals US, Inc.Opsumit, Uptravi | $656 | $1,252,55088 claims |
| GSKTrelegy Ellipta, Anoro Ellipta, Breo Ellipta, Incruse Ellipta, Arnuity Ellipta | $2,109 | $586,259886 claims |
| BayerAdempas | $369 | $326,41419 claims |
| AstraZenecaBreztri Aerosphere, Symbicort, Bevespi Aerosphere | $843 | $121,388195 claims |
| Boehringer IngelheimSpiriva Respimat, Stiolto Respimat | $784 | $87,803134 claims |
| PfizerEliquis | $116 | $27,91534 claims |
| MerckDulera | $53 | $11,57231 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 75th percentile of 539 pulmonary disease providers in Illinois.
Other pulmonary disease in Lake Forest
- Douglas HogarthChicago$3.1M
- Manu JainChicago$1.9M
- Momen WahidiChicago$1.2M
- Shashi BellamEvanston$1.2M
- Marilyn GlassbergMaywood$1000K
- Steven WhiteChicago$989K
- Ravi KalhanChicago$831K
- Patrick WhittenPeoria$812K
- Jane Dematte DamicoChicago$811K
- Septimiu MurguChicago$804K
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.