Michael Shomaker, MD
Nephrology · Thornton, CONPI 1932276581
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $37,620 of the $40,828 with a category attached, or 92.1%. Boehringer Ingelheim accounts for 90.7% of it on its own, with 17 other manufacturers making up the rest. Among nephrology clinicians in CO 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 92 payments — averaging $443.79 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boehringer Ingelheim$37K
- Lilly USA, LLC$2K
- AstraZeneca$414
- Nxstage Medical, Inc.$220
- Otsuka America Pharmaceutical, Inc.$207
- GSK$206
- plus $703 from 12 others
What the payments were for
- Speaking & faculty fees$37,62092%
- Travel & lodging$9212%
- Food & beverage$2,1615%
- Education$1260%
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 |
|---|---|---|
| Boehringer Ingelheim | 27 | $37,017 |
| Lilly USA, LLC | 4 | $2,062 |
| AstraZeneca(2 entities) | 16 | $414 |
| Nxstage Medical, Inc. | 3 | $220 |
| Otsuka America Pharmaceutical, Inc. | 6 | $207 |
| GSK | 5 | $206 |
| Amgen(2 entities) | 7 | $166 |
| Novartis | 6 | $132 |
| Mallinckrodt Hospital Products Inc. | 4 | $93 |
| ANI Pharmaceuticals, Inc. | 2 | $61 |
| Calliditas Therapeutics US Inc. | 3 | $58 |
| Novo Nordisk | 2 | $48 |
| Vifor Pharma, Inc. | 2 | $46 |
| Shire North American Group Inc | 1 | $24 |
| Amicus Therapeutics, Inc. | 1 | $23 |
| Chiesi USA, Inc. | 1 | $21 |
| Travere Therapeutics, Inc. | 1 | $17 |
| Bayer | 1 | $14 |
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.
- JARDIANCE$38,888
- BENLYSTA$125
- FARXIGA$110
- System One$105
How this compares
$40,828 in reported general payments places this provider in the 95th percentile of 152 nephrology providers in Colorado.
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 |
|---|---|---|
| VelphoroSucroferric Oxyhydroxide | 15 | $100,230 |
| LokelmaSodium Zirconium Cyclosilicate | 11 | $24,615 |
| JardianceEmpagliflozin | 22 | $15,395 |
| FarxigaDapagliflozin Propanediol | 16 | $14,776 |
| Sevelamer Carbonate | 28 | $5,412 |
| Calcitriol | 67 | $2,013 |
| Labetalol Hcl | 55 | $1,727 |
| Calcium Acetate | 12 | $1,370 |
| Midodrine Hcl | 14 | $1,177 |
| Furosemide | 65 | $508 |
| Tamsulosin Hcl | 58 | $464 |
| Hydralazine Hcl | 31 | $399 |
| Amlodipine Besylate | 57 | $317 |
| Lisinopril | 48 | $307 |
| Allopurinol | 22 | $291 |
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 |
|---|---|---|
| AstraZenecaLokelma, Farxiga | $414 | $39,39127 claims |
| Boehringer IngelheimJardiance | $37,017 | $15,39522 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 152 nephrology providers in Colorado.
Other nephrology in Thornton
- Geoffrey BlockLone Tree$726K
- Laura KooiengaDenver$82K
- Brad MarderDenver$77K
- Richard JohnsonAurora$62K
- Maria VelezDenver$47K
- Paul MillerGolden$42K
- Bruce KaplanAurora$42K
- Sixto GiustiAurora$23K
- Joseph AbdallahWestminster$23K
- Isaac TeitelbaumAurora$22K
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.