Site Locations

Unparalleled Network of Clinical Research Sites

ERG’s fully integrated network of best-in-class wholly-owned and affiliated clinical research trial sites provide sponsors and CROs a one-stop solution for multisite trials. We share therapeutic and operational expertise across sites. We align operational processes under one management umbrella. We offer comprehensive consulting services at every stage. And by strategically overlapping therapeutic area specialization, we bolster medical collaboration and build in the flexibility to shift patient targets from one site to another. The result: High-quality data that supports life-changing new medicines.

ERG Portfolio SitesERG Affiliate Sites

ERG Portfolio Sites

ERG owns and operates 20+ clinical trial research units, including a Phase I clinical pharmacology unit, several early-phase specialty units, a purpose-built research facility specializing in acute pain with dedicated operating rooms, and two postoperative surgical analgesic facilities. All sites operate under ERG’s control, with harmonized SOPs; centralized recruitment; oversight by a mobile Quality Assurance and Compliance team; and consolidated financial, contracting, budgeting, and other administrative activities. With decades of experience in both specialty populations and normal healthy volunteers, we have a proven track record of executing complex clinical trials—like yours.

ERG Affiliate Sites

Affiliate sites extend ERG’s exceptional clinical research trial services, increasing our ability to support sponsors and CROs in both capacity and services. These elite sites specialize in early- and late-phase CNS trials. Affiliate sites benefit from ERG best practices, receiving quality assurance training and sharing patient recruitment strategies; they also tap into our audit preparation and CAPA writing. As experienced research centers, they are acutely aware of the challenges sponsors face in placebo-controlled trials and often collaborate with ERG’s portfolio sites to share best practices.


completed trials across
our network


principal investigators and sub-investigators



ERG sites work closely with sponsors and CROs to execute complex clinical studies in healthy and specialized patient populations, delivering high-quality data on time and within budget.

Reduced Noise

Extensive experience with multi-therapeutic indications and techniques to mitigate placebo response reduces the noise in multisite clinical trials.

Rapid Study Start

Standardized operational policies pair with specialized patient recruitment strategies to ensure your clinical research study the swiftest possible start.

Peerless Special Procedure Capabilities

  • PSGs, EEGs, qEEGs, Actigraphy
  • CSF/Continuous CSF Sampling
  • PET Imaging, BOLD MRI, fMRI
  • Drug Delivery Administrations: Oral, Infusion, Injection, Dermal, Depot
  • Punch Skin Biopsies