99 registered Research Study Specialist providers practise in California according to the National Plan and Provider Enumeration System (NPPES). Browse by city below, or click any provider to view their full NPI record including taxonomy, address, and contact details.
1744R1102X99 in California53 citiesRefreshed monthly
SponsoredYour brand here. Reach the people searching this registry.Sponsored placementVisit ↗
By the numbersResearch Study Specialist in California
As of the June 2026 NPPES snapshot, California lists 99 registered Research Study Specialist providers: 82% individual practitioners and 18% organizations. 2% are listed in Medicare's PECOS enrollment system.
82%
Individual practitioners
81 of 99 . NPI-1
18%
Organizations
18 of 99 . NPI-2
2%
Medicare-enrolled
2 listed in PECOS
#1
Density rank
of 43 states with Research Study Specialist providers
Frequently asked · CaliforniaResearch Study Specialist in California
As of the June 2026 NPPES snapshot, 99 providers with the Research Study Specialist taxonomy are registered to a California practice address. Counts refresh monthly from the public CMS registry.
Open any provider's full NPI record to see their active status, taxonomy, and registered California practice address. For real-time confirmation, the authoritative source is the CMS NPPES public registry, which FindMyNPI mirrors and refreshes monthly.
San Francisco (8), Los Angeles (8), Palo Alto (8). Use the "Refine by city" panel above to open any city's full directory.