Covered recipient · General Payments record
CHRISTOPHER CANFIELD
Allopathic & Osteopathic Physicians Internal Medicine Nephrology
General Payments · PY2019–2024
$2,025.01
- Reported across 51 records
- CMS publication 2026-01-23
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
PY2024 · sorted by reported total
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $1,002.26 | 30 |
By paying entity
PY2024 · sorted by reported total
| Paying entity | Amount | Records |
|---|---|---|
| Bayer HealthCare Pharmaceuticals Inc. | $196.10 | 3 |
| CALLIDITAS THERAPEUTICS US INC. | $127.16 | 2 |
| GlaxoSmithKline, LLC. | $120.00 | 1 |
| ANI Pharmaceuticals, Inc. | $93.05 | 4 |
| Acerta Pharma LLC | $77.42 | 3 |
| Retrophin, Inc. | $68.04 | 2 |
| Otsuka America Pharmaceutical, Inc. | $61.63 | 4 |
| Amgen Inc. | $55.20 | 2 |
| NOVARTIS PHARMACEUTICALS CORPORATION | $50.23 | 2 |
| AKEBIA THERAPEUTICS INC | $38.22 | 2 |
| Mallinckrodt Hospital Products Inc. | $33.46 | 1 |
| Fresenius USA Marketing, Inc. | $26.47 | 1 |
| OPKO Pharmaceuticals, LLC | $20.52 | 1 |
| Ardelyx, Inc. | $20.23 | 1 |
| Relypsa, Inc. | $14.53 | 1 |
By program year
All program years on this page · sorted by year
Payment records · PY2024 (30)
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
- 2026-01-23
- Program years on this page
- 2019, 2022, 2023, 2024
- Generated from
- OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv
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