The people building PhaseWell.
Operators, clinicians, and strategists who came to PhaseWell because the mission is real, and are here to make sure it stays that way.
Aaron Campo
Board Director
Aaron Campo
Board Director
Mr. Campo is the leader and founding partner of Renstar Medical Research, a clinical trial site that has conducted more than 700 studies with over 100 biopharmaceutical sponsors. In his role, Mr. Campo oversees all aspects of site operations, sponsor relationships, and long-term business strategy.
Beyond Renstar, Mr. Campo also leads IMS Pharmacy and Neurological Specialists of Central Florida, further demonstrating his commitment to integrated, high-quality care across the healthcare continuum. Known for his operational excellence, Mr. Campo emphasizes data-driven decision-making, cohesive team development, and rigorously defined standard operating procedures—principles that have enabled him to grow and scale multiple successful ventures throughout Central Florida.
With more than 25 years at Renstar, Mr. Campo began his career as a Network Administrator and has played a pivotal role in the organization’s growth and evolution. His deep operational knowledge and entrepreneurial mindset continue to shape the site’s strategic direction and industry leadership.
Aaron holds a bachelor's degree in business administration and management from University of Florida.
Daniel Castillo
Board Director
Daniel Castillo
Board Director
Dr. Castillo is the Chief Executive Officer of Optum Care Delivery. He previously served as the CEO of Optum Health East, where he led regional operations within UnitedHealth Group’s health services and innovative platform, focusing on care delivery optimization and value-based growth.
Dr. Castillo is the Co-founder of Emvenio Research, a decentralized clinical research organization enabling broader trial access through community-based and mobile site models. Dr. Castillo also serves on the Board of WiserCare, a healthcare IT company specializing in analytic driven shared decision making.
Previously, Dr. Castillo was the President of Matrix Medical Network, a national provider organization backed by private equity, where he oversaw a workforce of 5,000 clinicians delivering in-home and mobile health services nationwide.
Dr. Castillo continues to practice as an emergency medicine physician at Northwestern Medicine in Chicago, maintaining clinical engagement alongside executive leadership.
Dr. Castillo holds an MD from the Medical College of Wisconsin and an MBA from University of Chicago's Booth School of Business.
David Johnston
Board Director
David Johnston
Board Director
Dr. Johnston has led large-scale clinical research and laboratory operations across global organizations. As President of PPD, Dr. Johnston was responsible for 36,000 employees and oversaw three core business divisions: Clinical Development, Patient Advisory Services, and Analytical Services. Dr. Johnston also managed enterprise-wide functions including Process Improvement, Quality Assurance, Learning and Development, and SG&A operations.
Previously, Dr. Johnston served as Executive Vice President of Global Clinical Development and EVP of PPD Laboratories, where he directed global trial delivery and laboratory service expansion.
From 2009 to 2013, Dr. Johnston held the role of Senior Vice President and Global Head of Clinical Trials at LabCorp Clinical Trials, where he managed global clinical operations during a period of significant growth.
In addition to PhaseWell Research, Dr. Johnston currently advises Inceptor Bio and Locus Biosciences, contributing to clinical development strategy and operational planning in the biotech sector, and is an executive advisor with Water Street Healthcare Partners.
Dr. Johnston holds a PhD in Microbiology and Immunology from the UNC School of Medicine and a bachelor’s degree in biology from the University of North Carolina at Greensboro.
Rob Goodwin
Board Director
Rob Goodwin
Board Director
Mr. Goodwin currently serves as Chief Operating Officer of Parexel, where he leads core clinical and operational functions with responsibility for quality, compliance, and innovation across global clinical trial delivery. Previously serving as Senior Vice President of Clinical Development and Operations at Pfizer, Mr. Goodwin oversaw global execution of clinical programs as well as some of the core groups to enable clinical trials, with a focus on optimizing trial delivery and operational scalability.
From 2010 to 2015, Mr. Goodwin served as Vice President of Safety Evaluation and Reporting in Pfizer’s Worldwide Safety and Regulatory division. In this role, Mr. Goodwin managed global functions including case processing, medical review, aggregate safety reporting, and regulatory medical writing across local and global markets.
Previously, from 2005 to 2010, Mr. Goodwin held the position of Vice President and Worldwide Head of Global Clinical Data Services, where he was responsible for clinical data management and operations within Development Operations.
Mr. Goodwin holds an MBA from Fairleigh Dickinson University’s Silberman College of Business, a master’s degree in research measurement and quantitative analysis from Southern Connecticut State University, and a bachelor’s degree in psychology and business from Eastern Connecticut State University.
Mike Gabrail
Board Director
Mike Gabrail
Board Director
Mr. Gabrail serves as a leader and advisor to Gabrail Cancer Center Research, where he supports site strategy and contracting. He has been instrumental in continuing the vision established by the center’s founder, Dr. Nashat Gabrail, contributing to its growth and sponsor network.
In addition to his contributions to clinical research, Mr. Gabrail is a practicing attorney with expertise in tax and property law, with a particular focus on regulatory and policy issues at the intersection of real estate and taxation.
Mr. Gabrail is also the founder and principal of The Crossroads Group, an investment firm with a diversified portfolio spanning multiple industries, and the co-founder of the Gabrail Family Foundation, which provides educational and financial support to students from underrepresented backgrounds.
Mr. Gabrail holds a JD from Case Western Reserve University and a bachelor’s degree in accounting from Miami University.
Kevin Offel
Lead Independent Director
Kevin Offel
Lead Independent Director
Mr. Offel is a seasoned healthcare executive with a strong track record of leading and scaling multi-site healthcare platforms. He has served as President and CEO of Centennial Hospice, My Dentist, Great Lake Dental Partners, and other nationally recognized healthcare organizations, where he delivered operational transformation and sustainable growth.
Mr. Offel’s prior roles include Executive Vice President of Operations at MDVIP, a national leader in personalized medicine, and Vice President of Operations at CareCore National, a specialty benefits management company. Across these positions, he has consistently driven efficiency, expanded service capabilities, and enhanced quality of care.
Mr. Offel is a former U.S. Army Blackhawk helicopter pilot. He also serves as Lead Independent Director for Great Lakes Dental Partners, Strongpoint Partners, and EyeSouth Partners, and is a Board Director for Specialdocs Consultants. His leadership has been instrumental in driving strategic governance and long-term growth, leading to successful recapitalizations.
Mr. Offel holds an MBA from Emory University’s Goizueta Business School and a bachelor’s degree in systems engineering from the United States Military Academy.