Alexander Chang, MD
Nephrology · Danville, PANPI 1407016967
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $16,591 of the $17,291 with a category attached, or 95.9%. Novartis accounts for 65.4% of it on its own, with 8 other manufacturers making up the rest. Among nephrology clinicians in PA with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 27 payments — averaging $640.42 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novartis$11K
- Amgen$5K
- Novo Nordisk$323
- Nxstage Medical, Inc.$132
- Calliditas Therapeutics US Inc.$39
- Medtronic$25
- plus $64 from 3 others
Across 66 payments — averaging $14,883 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.
- Novo Nordisk$502K
- Boehringer Ingelheim$276K
- Bayer$116K
- Novartis$55K
- Vertex$34K
What the payments were for
- Consulting fees$16,59196%
- Food & beverage$3782%
- Education$3232%
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 |
|---|---|---|
| Novartis | 4 | $11,308 |
| Amgen | 2 | $5,401 |
| Novo Nordisk | 10 | $323 |
| Nxstage Medical, Inc. | 6 | $132 |
| Calliditas Therapeutics US Inc. | 1 | $39 |
| Medtronic | 1 | $25 |
| Sanofi | 1 | $23 |
| Bausch & Lomb Americas Inc. | 1 | $21 |
| Johnson & Johnson | 1 | $20 |
How this compares
$17,291 in reported general payments places this provider in the 90th percentile of 586 nephrology providers in Pennsylvania.
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 | 26 | $514,290 |
| JardianceEmpagliflozin | 65 | $59,678 |
| OzempicSemaglutide | 20 | $28,666 |
| Torsemide | 63 | $1,667 |
| Eplerenone | 21 | $1,327 |
| Potassium Citrate ErPotassium Citrate | 23 | $1,024 |
| Losartan Potassium | 101 | $908 |
| Chlorthalidone | 53 | $807 |
| Lisinopril | 101 | $741 |
| Amlodipine Besylate | 127 | $722 |
| Valsartan | 15 | $670 |
| Nifedipine ErNifedipine | 17 | $598 |
| Spironolactone | 65 | $505 |
| Metoprolol Succinate | 39 | $478 |
| Carvedilol | 36 | $407 |
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 |
|---|---|---|
| Novo NordiskOzempic | $323 | $28,66620 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 90th percentile of 586 nephrology providers in Pennsylvania.
Other nephrology in Danville
- Prince AnandDanville$331K
- Kartik KalraDanville$108K
- Jason GeorgeDanville$15K
- Evan NorfolkDanville$9K
- Nelson KopytAllentown$949K
- Christopher GislerPittsburgh$757K
- Rakesh GulatiPhiladelphia$657K
- Raymond TownsendPhiladelphia$357K
- Ellie KelepourisPhiladelphia$287K
- Jonathan DiamondHarrisburg$249K
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.