ELLEN O FARRELL
Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant SIOUX FALLS, SD NPI 1386350171
Browse related groups: Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant SD LivaNova USA, Inc. All categories
General Payments — all program years on this page
$3,108.97
- Category: General Payments
- Program years: PY2023–2024
- Record count: 30
- As of (CMS publication): 2026-01-23
Latest program year (PY2024): $2,976.05 across 26 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 | $1,658.61 | 22 |
| Travel and Lodging | $1,317.44 | 4 |
By paying entity
Latest program year (PY2024) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| LivaNova USA, Inc. | $1,859.48 | 7 |
| Biogen, Inc. | $255.66 | 3 |
| Alexion Pharmaceuticals, Inc. | $193.36 | 2 |
| Genentech, Inc. | $147.65 | 2 |
| EMD Serono, Inc. | $124.14 | 1 |
| Neurocrine BioSciences, Inc. | $120.34 | 1 |
| ACADIA Pharmaceuticals Inc | $94.09 | 2 |
| ABBVIE INC. | $43.38 | 1 |
| JAZZ PHARMACEUTICALS INC. | $28.17 | 1 |
| EISAI INC. | $22.04 | 1 |
| Takeda Pharmaceuticals U.S.A., Inc. | $21.01 | 1 |
| ARGENX US, INC. | $19.31 | 1 |
| MDD US Operations, LLC | $18.56 | 1 |
| HARMONY BIOSCIENCES LLC | $14.45 | 1 |
| PFIZER INC. | $14.41 | 1 |
By program year
Records — PY2024 (26)
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
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.