Michael Mackey, MD
Nephrology · Jonesboro, ARNPI 1437127800
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $1,003 of the $1,185 with a category attached, or 84.7%. 22 manufacturers reported payments, led by Bayer at 29.0% of the total. Reporting peaked in 2023 at $594 and has fallen 90.8% since, to $55 in 2025. That places this record below the midpoint for nephrology clinicians in AR, where the typical reported total is $925.
Across 50 payments — averaging $23.70 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Bayer$343
- Otsuka America Pharmaceutical, Inc.$147
- Abbott$124
- Cordis US CORP.$59
- Amgen$56
- AstraZeneca$56
- plus $400 from 16 others
What the payments were for
- Food & beverage$1,00385%
- Education$18115%
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 |
|---|---|---|
| Bayer | 15 | $343 |
| Otsuka America Pharmaceutical, Inc. | 3 | $147 |
| Abbott | 1 | $124 |
| Cordis US CORP. | 2 | $59 |
| Amgen | 3 | $56 |
| AstraZeneca | 3 | $56 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 3 | $48 |
| Boehringer Ingelheim | 2 | $40 |
| Travere Therapeutics, Inc. | 3 | $35 |
| Novartis | 2 | $34 |
| Novo Nordisk | 1 | $32 |
| Idorsia Pharmaceuticals US Inc | 2 | $27 |
| AbbVie | 1 | $25 |
| Edwards Lifesciences | 1 | $24 |
| Cvrx, Inc. | 1 | $23 |
| Aurinia Pharma U.S., Inc. | 1 | $22 |
| Axsome Therapeutics, Inc. | 1 | $19 |
| Lundbeck LLC | 1 | $16 |
| Merck | 1 | $15 |
| Calliditas Therapeutics US Inc. | 1 | $14 |
| Dexcom, Inc. | 1 | $13 |
| Lilly USA, LLC | 1 | $12 |
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
$1,185 in reported general payments places this provider in the 50th percentile of 85 nephrology providers in Arkansas.
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 |
|---|---|---|
| Omeprazole | 47 | $446 |
| Febuxostat | 12 | $438 |
| Fludrocortisone Acetate | 19 | $379 |
| Furosemide | 92 | $371 |
| Tamsulosin Hcl | 16 | $315 |
| Potassium Chloride | 12 | $235 |
| Pantoprazole Sodium | 24 | $194 |
| Prednisone | 48 | $184 |
| Labetalol Hcl | 12 | $174 |
| Calcitriol | 22 | $136 |
| LoperamideLoperamide Hcl | 11 | $128 |
| Clonidine Hcl | 30 | $113 |
| Amlodipine Besylate | 24 | $95 |
| Allopurinol | 16 | $86 |
| Torsemide | 12 | $77 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Jonesboro
- Clinton EdwardsJonesboro$8K
- Mohammed AlhajjiJonesboro$6K
- James MaxwellJonesboro$5K
- Gerren HobbyJonesboro$377
- Adam WoodruffJonesboro$358
- Drew HeipleRussellville$236K
- Luis JuncosLittle Rock$66K
- John HeifnerLittle Rock$45K
- Shaker QaqishNorth Little Rock$16K
- Michael GerschHot Springs$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.