Michael Heung, MD
Nephrology · Ann Arbor, MINPI 1386726289
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $813 of the $956 with a category attached, or 85.0%. Potrero Medical, Inc. accounts for 85.0% of it on its own, with 2 other manufacturers making up the rest. Reporting peaked in 2022 at $450 and has fallen 70.7% since, to $132 in 2025.
Across 4 payments — averaging $239.10 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Potrero Medical, Inc.$813
- Travere Therapeutics, Inc.$132
- Vifor Pharma, Inc.$12
Across 26 payments — averaging $4448.90 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.
- Astute Medical, Inc.$70K
- AbbVie$45K
What the payments were for
- Consulting fees$81385%
- Food & beverage$13214%
- Education$121%
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 |
|---|---|---|
| Potrero Medical, Inc. | 2 | $813 |
| Travere Therapeutics, Inc. | 1 | $132 |
| Vifor Pharma, Inc. | 1 | $12 |
How this compares
$956 in reported general payments places this provider in the 55th percentile of 325 nephrology providers in Michigan.
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 |
|---|---|---|
| Everolimus | 13 | $108,000 |
| FarxigaDapagliflozin Propanediol | 40 | $52,418 |
| JardianceEmpagliflozin | 16 | $15,713 |
| Mycophenolate Mofetil | 16 | $1,498 |
| Losartan Potassium | 79 | $1,296 |
| Calcitriol | 25 | $793 |
| Nifedipine ErNifedipine | 19 | $611 |
| Amlodipine Besylate | 36 | $486 |
| Allopurinol | 25 | $380 |
| Spironolactone | 18 | $289 |
| Prednisone | 36 | $268 |
| Carvedilol | 14 | $236 |
| Atorvastatin Calcium | 15 | $233 |
| Furosemide | 20 | $186 |
| Lisinopril | 11 | $172 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Ann Arbor
- Alexander YevzlinAnn Arbor$1.1M
- Laura MarianiAnn Arbor$150K
- Matthias KretzlerAnn Arbor$70K
- Lenar YessayanAnn Arbor$40K
- Bruce RobinsonAnn Arbor$38K
- Karthik RamaniAnn Arbor$27K
- Rajiv SaranAnn Arbor$23K
- Panduranga RaoAnn Arbor$20K
- Andrea OliverioAnn Arbor$15K
- Abhijit NaikAnn Arbor$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.