Michael Quadrini, MD
Nephrology · Huntsville, ALNPI 1831258698
Payments from drug & device makers
Across 836 payments — averaging $1511.75 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Eli Lilly$704K
- Bayer$315K
- Amgen$187K
- Biogen$24K
- Otsuka America Pharmaceutical, Inc.$16K
- GSK$6K
- plus $12K from 25 others
Across 5 payments — averaging $30,365 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Eli Lilly$152K
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 |
|---|---|---|
| Eli Lilly | 5 | $703,834 |
| Bayer | 222 | $314,594 |
| Amgen(2 entities) | 240 | $187,075 |
| Biogen | 2 | $24,276 |
| Otsuka America Pharmaceutical, Inc. | 64 | $15,944 |
| GSK | 32 | $6,434 |
| Vifor Pharma, Inc. | 54 | $4,094 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | 4 | $3,772 |
| AstraZeneca(2 entities) | 66 | $1,005 |
| Novartis | 19 | $494 |
| OPKO Pharmaceuticals, LLC | 33 | $410 |
| Calliditas Therapeutics US Inc. | 16 | $362 |
| Travere Therapeutics, Inc. | 17 | $247 |
| Boehringer Ingelheim | 11 | $236 |
| Aurinia Pharma U.S., Inc. | 8 | $192 |
| Akebia Therapeutics Inc | 7 | $167 |
| Novo Nordisk | 5 | $112 |
| Lilly USA, LLC | 5 | $98 |
| Fresenius USA Marketing, Inc. | 5 | $84 |
| Ultragenyx Pharmaceutical Inc. | 3 | $69 |
| Apellis Pharmaceuticals, Inc. | 3 | $55 |
| Mallinckrodt Hospital Products Inc. | 2 | $53 |
| Takeda Pharmaceuticals U.S.A., Inc. | 3 | $40 |
| Mallinckrodt Enterprises LLC | 2 | $33 |
| Daiichi Sankyo Inc. | 2 | $33 |
| AMAG Pharmaceuticals, Inc. | 1 | $23 |
| Ardelyx, Inc. | 1 | $22 |
| Cormedix Inc. | 1 | $17 |
| Shire North American Group Inc | 1 | $17 |
| Genentech USA, Inc. | 1 | $16 |
| Medtronic | 1 | $11 |
How this compares
$1,263,820 in reported general payments places this provider in the 95th percentile of 164 nephrology providers in Alabama.
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.
Other nephrology in Huntsville
- David TietjenHuntsville$2.6M
- David BainsHuntsville$856K
- Carlo CastilloHuntsville$461K
- James SmelserHuntsville$172K
- Roger CoomerHuntsville$93K
- Todd BroomeHuntsville$7K
- Heather HaleyHuntsville$6K
- Saad RahmanHuntsville$6K
- Dana RizkBirmingham$2.6M
- Eric WallaceBirmingham$1.3M
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.