Christopher Gisler, MD
Nephrology · Pittsburgh, PANPI 1588845796
Payments from drug & device makers
Across 1,353 payments — averaging $559.59 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$359K
- Vifor Pharma, Inc.$146K
- Bayer$83K
- Akebia Therapeutics Inc$60K
- Travere Therapeutics, Inc.$51K
- Calliditas Therapeutics US Inc.$35K
- plus $23K from 18 others
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) | 499 | $358,622 |
| Vifor Pharma, Inc. | 305 | $145,931 |
| Bayer | 117 | $83,338 |
| Akebia Therapeutics Inc | 121 | $60,209 |
| Travere Therapeutics, Inc. | 106 | $50,848 |
| Calliditas Therapeutics US Inc. | 50 | $35,062 |
| Otsuka America Pharmaceutical, Inc. | 44 | $18,596 |
| Fresenius USA Marketing, Inc. | 5 | $1,405 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | 1 | $1,188 |
| AstraZeneca(2 entities) | 34 | $656 |
| OPKO Pharmaceuticals, LLC | 19 | $287 |
| C. R. Bard, Inc. & Subsidiaries | 1 | $197 |
| ANI Pharmaceuticals, Inc. | 13 | $188 |
| Mallinckrodt Enterprises LLC | 20 | $173 |
| Ardelyx, Inc. | 1 | $107 |
| Aurinia Pharma U.S., Inc. | 6 | $95 |
| Daiichi Sankyo Inc. | 2 | $52 |
| Novartis | 2 | $48 |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $39 |
| Covidien LP | 1 | $26 |
| Sanofi | 1 | $19 |
| Medtronic | 1 | $17 |
| Mallinckrodt Hospital Products Inc. | 1 | $17 |
| Boston Scientific | 1 | $13 |
How this compares
$757,132 in reported general payments places this provider in the 95th 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.
Other nephrology in Pittsburgh
- Swati AroraPittsburgh$388K
- Kelly LiangPittsburgh$208K
- Khaled NasharPittsburgh$198K
- Linda FriedPittsburgh$112K
- Mohan RamkumarPittsburgh$53K
- Katalin SusztakPhiladelphia$4.8M
- Debbie Cohen SteinPhiladelphia$2.8M
- Nelson KopytAllentown$2.1M
- Iris LeePhiladelphia$1.9M
- Abdallahsassine GearaPhiladelphia$1.2M
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.