Paid Clinical Trials in California
6 companies run paid studies for healthy volunteers in California. Travel options to the biggest Phase 1 hubs are listed below them.
Local sites in California
- 1-866-461-2526
Altasciences Los Angeles (Cypress) · Cypress
Listings we verified: up to $32,450 (multi-stay study).
- 888-228-7425
Parexel Los Angeles Early Phase · Glendale
See current studies and pay on the company site.
CenExel ACT · Anaheim
See current studies and pay on the company site.
Los Angeles Clinical Trials · Los Angeles
See current studies and pay on the company site.
NRC Research Institute · Orange County / LA
See current studies and pay on the company site.
CenExel CNR · Sherman Oaks area
See current studies and pay on the company site.
Travel options
- SLC 801-269-8200
ICON Early Phase (SLC / Lenexa / San Antonio)
See current studies and pay on the company site.
- 1-866-429-3700
Fortrea Clinical Trials (Dallas / Daytona / Madison / San Antonio)
See current studies and pay on the company site.
PPD Early Phase (Austin / Las Vegas / Orlando)
See current studies and pay on the company site.
- 1-866-445-7033
Celerion (Tempe AZ / Lincoln NE)
See current studies and pay on the company site.
Search tools for more studies
Use these to discover more companies, then apply on the company’s own site.
- ClinicalTrials.gov (opens in a new tab)
- StudyScavenger (search by compensation) (opens in a new tab)
- Just Another Lab Rat (Phase 1 clinic directory) (opens in a new tab)
- CenterWatch (opens in a new tab)
- Antidote (opens in a new tab)
- WithPower (opens in a new tab)
- Find Paid Clinical Trials (opens in a new tab)
- Trials Today (opens in a new tab)
Company list researched October 24, 2026; links checked the same day. Pay amounts shown only where we verified them on the company’s own site (October 24, 2026).