Stefan Hemmings
Nephrology · Omaha, NENPI 1760820575
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 93.7% of the total across 219 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 25 manufacturers, the largest accounting for just 11.8% — the pattern of someone who eats at a lot of different presentations.
Across 219 payments — averaging $20.76 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$535
- Bayer$422
- Travere Therapeutics, Inc.$413
- Vifor Pharma, Inc.$411
- Mallinckrodt Hospital Products Inc.$349
- OPKO Pharmaceuticals, LLC$330
- plus $2K from 19 others
What the payments were for
- Food & beverage$4,26094%
- Education$2866%
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 |
|---|---|---|
| Amgen(2 entities) | 29 | $535 |
| Bayer | 24 | $422 |
| Travere Therapeutics, Inc. | 14 | $413 |
| Vifor Pharma, Inc. | 23 | $411 |
| Mallinckrodt Hospital Products Inc. | 13 | $349 |
| OPKO Pharmaceuticals, LLC | 19 | $330 |
| Fresenius USA Marketing, Inc. | 15 | $300 |
| AstraZeneca(2 entities) | 17 | $289 |
| Calliditas Therapeutics US Inc. | 9 | $243 |
| GSK | 14 | $234 |
| Otsuka America Pharmaceutical, Inc. | 8 | $166 |
| Akebia Therapeutics Inc | 6 | $139 |
| Boehringer Ingelheim | 6 | $121 |
| Aurinia Pharma U.S., Inc. | 5 | $117 |
| Outset Medical Inc | 1 | $103 |
| Novartis | 3 | $80 |
| Ultragenyx Pharmaceutical Inc. | 3 | $69 |
| Mallinckrodt Enterprises LLC | 2 | $54 |
| Alnylam Pharmaceuticals Inc. | 2 | $37 |
| Genentech USA, Inc. | 1 | $31 |
| Ardelyx, Inc. | 1 | $29 |
| ANI Pharmaceuticals, Inc. | 1 | $22 |
| Lilly USA, LLC | 1 | $19 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $16 |
| Bard Peripheral Vascular, Inc. | 1 | $15 |
How this compares
$4,546 in reported general payments places this provider in the 80th percentile of 60 nephrology providers in Nebraska.
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 |
|---|---|---|
| JynarqueTolvaptan | 18 | $347,608 |
| KerendiaFinerenone | 62 | $46,688 |
| RayaldeeCalcifediol | 25 | $32,746 |
| FarxigaDapagliflozin Propanediol | 45 | $32,086 |
| AuryxiaFerric Citrate | 16 | $22,086 |
| Sevelamer Carbonate | 35 | $3,842 |
| Calcium Acetate | 23 | $2,832 |
| Nifedipine ErNifedipine | 55 | $1,485 |
| Labetalol Hcl | 12 | $1,076 |
| Midodrine Hcl | 25 | $969 |
| Calcitriol | 54 | $810 |
| Valsartan | 21 | $599 |
| Potassium Chloride | 28 | $478 |
| Allopurinol | 60 | $428 |
| Hydralazine Hcl | 30 | $414 |
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 |
|---|---|---|
| Otsuka America Pharmaceutical, Inc.Jynarque | $166 | $347,60818 claims |
| BayerKerendia | $422 | $46,68862 claims |
| OPKO Pharmaceuticals, LLCRayaldee | $330 | $32,74625 claims |
| AstraZenecaFarxiga | $289 | $32,08645 claims |
| Akebia Therapeutics IncAuryxia | $139 | $22,08616 claims |
| ANI Pharmaceuticals, Inc.Valsartan | $22 | $59921 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 80th percentile of 60 nephrology providers in Nebraska.
Other nephrology in Omaha
- Richard LundOmaha$378K
- Jeffrey PasserOmaha$146K
- Roslyn MannonOmaha$64K
- Troy PlumbOmaha$17K
- Eric MagliuloOmaha$9K
- Prasanth RavipatiOmaha$7K
- Joseph BastOmaha$5K
- Sunil JagadeshOmaha$4K
- Judd BauerOmaha$3K
- Mohammed NazmulOmaha$3K
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.