Our Experts

Work with Industry Thought Leaders at Every Stage of Your Clinical Research Study

With so much at stake, you want the best minds focused on your clinical trial. ERG delivers, with teams of experts working on every facet.

Andria Chastain

Chief Operating Officer

  • Responsible for all clinical operations across the ERG portfolio, working closely with the medical and operational teams and bridging communication with the corporate leaders in finance, business development, and human capital
  • Industry veteran who oversaw clinical operations at several large multi-site SMOs  
  • Has worked on more than 100 early- to late-phase clinical trials
  • Provided clinical operations and project management services to Thievon-Wright and has been with ERG since its inception
  • Holds a degree from the University of North Carolina (BA, Psychology)

Denise Roberts, RN, CCRC

Executive Director, Clinical Operations and Site Development, Evolution Research Group

  • Extensive experience with postoperative pain models, as well as multi-therapeutic indications, specializing in mitigating placebo response
  • Managed and participated in the clinical research of more than 225 Phase I, early- and late-phase trials in various therapeutic areas, including the following postoperative pain indications: abdominoplasty, third molar extraction, bunionectomy, and total knee replacement
  • Developed and manages ERG’s Postoperative Analgesic Program across multiple clinical trial sites
  • Responsible for the design and build-out of a 10,000-square-foot acute pain research facility, which includes two operating rooms and 24 beds
  • Holds a degree from Utah Valley State College (ADN, Registered Nurse), ACRP Certification and NIH Certification

Erica Ridolfi, CCRC

Executive Director Clinical Operations

  • Managed and participated in over 350 Phase I and later-stage clinical trials in a range of therapeutic areas, including psychiatry, addiction and pain
  • Held roles at CRI Lifetree and PRA Early Development Services including Site Director and Senior Director of Clinical Operations – Project Management
  • Holds degrees from Camden Community College (Associate of Science, Business Administration)

Joel Keller

Director, Patient Recruitment and Marketing

  • Previously managed centralized patient recruitment and retention, enrolling trials at over 20 sites
  • Has served in a variety of media and marketing positions at an advertising agency, TV station and apparel company
  • Holds a BS, Communications/Marketing from the University of Illinois at Urbana-Champaign

Stacy Dilzer, RN, CCRC

President, Clinical Pharmacology of Miami

  • Sought-after operational leader in early-phase execution and study design for healthy volunteer trials
  • Industry expert in the management and operation of 100s of Phase I-IV clinical trials
  • Extensive career as a study coordinator, project manager, Director of Clinical Operations, Chief Compliance Officer and Vice President of Clinical Operations
  • Coauthored numerous articles pertaining to clinical pharmacology
  • Holds a BS, Nursing from Florida International University
  • Registered Professional Nurse

Cooper Shamblen

Vice President of Operations, Clinical Pharmacology of Miami

  • Involved in all aspects of study conduct for more than 1800 clinical trials with a focus on Phase I studies
  • Cofounder of Clinical Pharmacology Associates and Clinical Pharmacology of Miami

Melissa Schaerf, MS, APRN

Cofounder and Director of Operations, Neuropsychiatric Research Center of Southwest Florida

  • Cofounded NPRC with the late Dr. Frederick Schaerf; manages all daily operations
  • Sub-Investigator, clinical research coordinator, and/or rater on more than 90 CNS trials
  • Frequent lecturer for both healthcare professional and community groups
  • Holds degrees from the University of South Florida (MS, Nursing) and the University of North Florida (BA)

Dixie Creager

Site Director, Pacific Research Network

  • Leader in clinical trial site management
  • Conducted 100s of clinical trials in sleep disorders, dementia, Alzheimer’s disease, and other indications
  • Runs clinical and business operations at sites in both San Diego, CA and Rancho Bernardo, CA
  • Frequent contributor to study design and execution of clinical trials in Alzheimer’s disease and sleep disorders

Ashley Poole, CCRC

Site Director, Woodland International Research Group

  • Industry leader in clinical trial site operations and day-to-day site management
  • Participated in more that 150 clinical trials in various therapeutic areas including psychiatry, pediatrics and pain
  • Frequently engaged to serve on advisory boards by sponsors working on programs addressing chronic mental illness
  • Holds a degree from the University of South Florida (BS)

Pablo Suso, PharmD, RPH

Director, Phase I Services Clinical Pharmacology of Miami

  • Has participated in more than 200 Phase I clinical trials
  • Works closely as a clinical liaison for sponsors during study conduct
  • Holds degrees from the University of Florida (Doctor of Pharmacy) and Florida International University (BS, Biology)

Melissa Ellis, CCRC

Site Director, Midwest Clinical Research Center

  • Conducted 260 clinical trials in Phase I-IV with challenging populations in schizophrenia, major depressive disorder, bipolar disorder, post-traumatic stress disorder, essential tremor, obsessive compulsive disorder, postoperative pain, vaccine, as well as medical indications
  • Prior experience as a clinical research director as well as certified clinical research coordinator

Ana Fuquay, MS, CCRC

Site Director, Brain Matters Research

  • Has participated in numerous late-phase clinical trials in CNS, with a focus on Alzheimer’s disease
  • Manages clinical and business operations at clinical trial sites in Delray Beach, FL and Stuart, FL
  • Holds degrees from Nova Southeastern University (MS, Mental Health Counseling) and Florida Atlantic University (BA)

Lisa Rodriguez

Site Director, Endeavor Clinical Trials

  • Has participated in more than 60 early and late-phase clinical trials
  • Extensive experience as a clinical research coordinator, administrator and site manager
  • Manages clinical and business operations for Endeavor Clinical Trials
  • Previously served as Director of Quality Assurance

Petra Stark

Site Director, Woodland Research Network

  • Manages day-to-day clinical and business operations at Woodland Research Network
  • Serves as clinical team lead for Phase I and later-phase clinical research trials
  • Previously held positions as Project Supervisor for outpatient studies and Charge Coordinator at PRA Health Sciences