Covered recipient · General Payments record
CHRISTOPHER KOLASA
Allopathic & Osteopathic Physicians Internal Medicine Nephrology
General Payments · PY2021–2025
$792.80
- Reported across 28 records
- CMS publication 2026-06-30
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
How these totals are calculated
- The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. Nothing is estimated, weighted, or combined across categories.
- General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
- Featured-page threshold (a presentation gate, not a judgment): records>=3 OR total>=100 (all years).
- Methodology & Data — sourcing, labeling, and limitations.
By nature of payment
PY2025 · sorted by reported total
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $537.94 | 24 |
| Education | $16.89 | 1 |
By paying entity
PY2025 · sorted by reported total
| Paying entity | Amount | Records |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $91.61 | 4 |
| CALLIDITAS THERAPEUTICS US INC. | $77.47 | 4 |
| Bayer HealthCare Pharmaceuticals Inc. | $66.28 | 3 |
| Xeris Pharmaceuticals, Inc. | $48.86 | 2 |
| NOVARTIS PHARMACEUTICALS CORPORATION | $45.22 | 2 |
| Retrophin, Inc. | $36.31 | 2 |
| Ardelyx, Inc. | $31.32 | 1 |
| OPKO Pharmaceuticals, LLC | $26.11 | 1 |
| Novo Nordisk AS | $25.33 | 1 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $25.22 | 1 |
| Aurinia Pharma U.S., Inc. | $24.34 | 1 |
| Ascendis Pharma Endocrinology Inc | $20.08 | 1 |
| Mallinckrodt Hospital Products Inc. | $19.92 | 1 |
| Takeda Pharmaceuticals U.S.A., Inc. | $16.76 | 1 |
By program year
All program years on this page · sorted by year
Payment records · PY2025 (25)
Sorted by paying entity, then date · as published by CMS
Source & provenance
- Dataset
- CMS Open Payments — General Payments
- Publisher of source data
- Centers for Medicare & Medicaid Services
- CMS publication date
- 2026-06-30
- Program years on this page
- 2021, 2022, 2024, 2025
- Generated from
- OP_DTL_GNRL_PGYR2025_P06302026_06032026.csv
One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.
Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.