About ERG
Medicine Moving Forward
As a dynamic independently held clinical research site company, ERG offers a deep bench of specialized expertise in more than 50 specific indications, with unparalleled capabilities in CNS studies.
Our Mission
ERG’s mission is to provide the highest quality clinical trial execution across all clinical research phases to help sponsors speed life-saving and life-enhancing therapeutics to market as quickly and safely as possible.
ERG History Timeline

- 1998
- 2014
- 2015
- 2015
- 2015
- 2015
- 2016
- 2016
- 2017
- 2017
- 2017
- 2018
- 2018
- 2018
- 2019
- 2019
- 2019
- 2019
1998-Thievon-Wright Consulting Group (TWCG) established
Thievon-Wright Consulting Group (TWCG) established
2014-ERG formed via merger of TWCG, St. Louis Clinical Trials (SLCT), Woodland Research Northwest (WRN), and Woodland International Research Group (WIRG)
ERG formed via merger of TWCG, St. Louis Clinical Trials (SLCT), Woodland Research Northwest (WRN), and Woodland International Research Group (WIRG)
2015-ERG acquires Pacific Research Network
ERG acquires Pacific Research Network
2015-ERG acquires Midwest Clinical Research Center (MCRC)
ERG acquires Midwest Clinical Research Center (MCRC)
2015-WRN opens new 24-bed clinical research unit (CRU) in Rogers, AR
WRN opens new 24-bed clinical research unit (CRU) in Rogers, AR
2015-WIRG opens a 14-bed pediatric/specialty CRU
WIRG opens a 14-bed pediatric/specialty CRU
2016-PRN opens site in Rancho Bernardo, CA bringing research opportunities to large 55+ community
PRN opens site in Rancho Bernardo, CA bringing research opportunities to large 55+ community
2016-ERG acquires Clinical Pharmacology of Miami, a 120-bed phase I CRU
ERG Clinical acquired Clinical Pharmacology of Miami, a 120-bed phase I CRU
2017-ECT opens new in-patient pain unit
ECT opens new inpatient pain unit
2017- ERG acquires Brain Matters Research (BMR), expanding Alzheimer’s disease (AD) and neurology capabilities
ERG acquires Brain Matters Research (BMR), expanding Alzheimer’s disease (AD) and neurology capabilities
2017- ERG establishes post-surgical pain capabilities at MCRC and SLCT, expanding pain franchise
ERG establishes post-surgical pain capabilities at MCRC and SLCT, expanding pain franchise
2018-ERG acquires Neuropsychiatric Research Center of SW Florida, expanding AD and neurology capabilities
ERG acquires Neuropsychiatric Research Center of SW Florida, expanding AD and neurology capabilities
2018-ERG initiates NASH/diabetes growth initiative, hiring Sherwyn Schwartz, MD
ERG initiates NASH/diabetes growth initiative, hiring Sherwyn Schwartz, MD
2018-BMR opens second site in Stuart, FL, bringing research services to underserved region
BMR opens second site in Stuart, FL, bringing research services to underserved region
ERG acquires post-surgical pain specialty group Endeavor Clinical Trials (ECT)
ERG acquires post-surgical pain specialty group Endeavor Clinical Trials (ECT)
2019-ERG acquires Finger Lakes Clinical Research, expanding psychiatric and pediatric capabilities
ERG acquires Finger Lakes Clinical Research, expanding psychiatric and pediatric capabilities
2019-ECT builds new 15-bed in-patient unit with two on-site operating rooms
ECT builds new 15-bed inpatient unit with two on-site operating rooms
2019-New ERG logo emphasizes the people at the heart of everything we do
New ERG logo emphasizes the people at the heart of everything we do
The Foundation: Executional Excellence
ERG was founded to help critical new therapeutics accelerate through the pipeline. We succeed via centralized centers of excellence that manage the financial and administrative aspects of clinical trials, freeing clinicians to focus on the science. As we have grown, we have made platform investments in clinical operations, quality and compliance, human capital, finance, and technology—investments that deepen the support we provide our partners.
Through this nationwide platform, we simplify budgeting and contracting negotiations. We streamline recruitment and regulatory planning. We deliver consistent quality, minimizing both noise and the placebo effect. The result: sponsors are confident in their data—and pleased to have saved both time and money in the process.
ERG provides a one-stop solution for clinical research needs
Inpatient/Outpatient

Clinical Trial Phase

Therapeutic Area

Extensive Clinical Research Trial Capabilities
ERG combines industry-leading experts with specialized facilities and access to over 32 million potential patients to support sponsors at every step of the clinical research journey.
We conduct both inpatient and outpatient Phase I-IV clinical research studies. Our robust network of owned and affiliated clinical research sites includes a Phase I clinical pharmacology unit, several early-phase specialty units, a purpose-built research facility specializing in acute pain with two dedicated operating rooms, and two postoperative surgical analgesic facilities. Our centers have sophisticated pharmacy capabilities, including infusion and formulation; on-site testing capabilities such as polysomnography (PSG), quantitative electroencephalography (qEEGs) and EEGs, FibroScans®, cerebrospinal fluid (CSF) sampling; and off-site supplemental services from medical imaging to ophthalmology through collaborative agreements.
Our principal investigators are renowned in their fields, with expertise developed over thousands of clinical trials and shared through hundreds of papers and posters. They are supported by highly trained staff and expert clinical raters, each certified on multiple scales used in various CNS indications.
We recruit patients from a large and growing database of people suffering from mental illness, neurological disorders, sleep disorders, addictions, diabetes, and other illnesses, as well as normal healthy volunteers who participate in trials for the advancement of medicine. ERG’s community outreach, educational programs and patient engagement activities ensure that the databases are current and constantly expanding.
Through all these paths, ERG continues to grow its capabilities and expand into indications where there are tremendous unmet medical needs in the United States and globally.