WILLIAM FREDERICK ERGEN
Allopathic & Osteopathic Physicians|Internal Medicine|Gastroenterology KNOXVILLE, TN NPI 1710249529
Browse related groups: Allopathic & Osteopathic Physicians|Internal Medicine|Gastroenterology TN ABBVIE INC. All categories
General Payments — all program years on this page
$4,174.26
- Category: General Payments
- Program years: PY2018–2024
- Record count: 245
- As of (CMS publication): 2026-01-23
Latest program year (PY2024): $938.11 across 57 records · disputed records: 0
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
How this figure is 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
Latest program year (PY2024) · sorted by reported total.
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $938.11 | 57 |
By paying entity
Latest program year (PY2024) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| ABBVIE INC. | $567.05 | 36 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | $92.13 | 6 |
| AIMMUNE THERAPEUTICS, INC. | $79.34 | 4 |
| PFIZER INC. | $53.94 | 3 |
| Janssen Biotech, Inc. | $37.70 | 2 |
| Takeda Pharmaceuticals U.S.A., Inc. | $35.09 | 2 |
| Celgene Corporation | $29.36 | 2 |
| Ardelyx, Inc. | $23.49 | 1 |
| Ferring Pharmaceuticals Inc. | $20.01 | 1 |
By program year
Records — PY2024 (57)
Provenance & corrections
- Dataset: CMS Open Payments — General Payments
- Source: CMS Open Payments dataset (bulk file)
- Publisher of source data: Centers for Medicare & Medicaid Services
- Generated from: OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv
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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.