Covered recipient · General Payments record
DARREN J HAMMERGREN
Physician Assistants & Advanced Practice Nursing Providers Nurse Practitioner Psychiatric/Mental Health
General Payments · PY2021–2024
$3,298.57
- Reported across 193 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 | $796.60 | 42 |
By paying entity
PY2024 · sorted by reported total
| Paying entity | Amount | Records |
|---|---|---|
| ABBVIE INC. | $183.85 | 11 |
| Teva Pharmaceuticals USA, Inc. | $136.02 | 7 |
| Janssen Pharmaceuticals, Inc | $133.70 | 6 |
| ITI, Inc. | $130.06 | 8 |
| Otsuka America Pharmaceutical, Inc. | $55.73 | 2 |
| Neurocrine BioSciences, Inc. | $44.29 | 2 |
| Alkermes, Inc. | $36.93 | 2 |
| Bausch Health US, LLC | $36.38 | 2 |
| Takeda Pharmaceuticals U.S.A., Inc. | $20.71 | 1 |
| Axsome Therapeutics, Inc. | $18.93 | 1 |
By program year
All program years on this page · sorted by year
Payment records · PY2024 (42)
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
- 2021, 2022, 2023, 2024
- Generated from
- OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv
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