DAVID C REDFERN
Allopathic & Osteopathic Physicians|Allergy & Immunology WATERLOO, IA NPI 1750334751
Browse related groups: Allopathic & Osteopathic Physicians|Allergy & Immunology IA Acerta Pharma LLC All categories
General Payments — all program years on this page
$645.45
- Category: General Payments
- Program years: PY2018
- Record count: 56
- As of (CMS publication): 2026-01-23
Latest program year (PY2018): $645.45 across 56 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 (PY2018) · sorted by reported total.
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $645.45 | 56 |
By paying entity
Latest program year (PY2018) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| Acerta Pharma LLC | $258.74 | 16 |
| GlaxoSmithKline, LLC. | $202.33 | 26 |
| Teva Pharmaceuticals USA, Inc. | $34.48 | 3 |
| NOVARTIS PHARMACEUTICALS CORPORATION | $32.86 | 2 |
| PFIZER INC. | $27.89 | 2 |
| Mylan Specialty L.P. | $24.35 | 2 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $14.24 | 1 |
| Merck Sharp & Dohme Corporation | $14.23 | 1 |
| Kaleo, Inc. | $14.08 | 1 |
| Regeneron Healthcare Solutions, Inc. | $11.66 | 1 |
| Genentech USA, Inc. | $10.59 | 1 |
By program year
| Program year | Amount | Records |
|---|---|---|
| 2018 | $645.45 | 56 |
Records — PY2018 (56)
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_PGYR2018_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.