About pRxEngage

pRxEngage exists to make clinical trials clear, accessible and empowering for patients. We bridge the gap between people, clinical trials, community organisations, biopharma, CROs and research sites through trust, plain language and meaningful engagement.

Our Story

pRxEngage was born from personal experience. Losing a close friend to a disease with limited options sparked a mission to ensure that no one faces confusion or distance when looking for clinical trials.

Our founder’s work in clinical research revealed how many good clinical trials never reach the people who could benefit most. We created pRxEngage to change that. By focusing on transparency, trust and empowerment, we give patients and communities the tools to explore trials on their terms.

Sylvester (right) was more than a friend. He was the reason I began this work. We lost him too young to sickle cell disease, but his memory drives everything we do.

What We Do

Empowering Patients, Supporting Research

Leadership and Vision

Keith Berelowitz
Keith Berelowitz Founder & CEO
Keith Berelowitz is the Founder of pRxEngage, a company redefining patient engagement and retention in clinical trials using living experience, proven methods, and AI.
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With over two decades of experience in pharmaceutical and biotechnology clinical research, patient engagement, and health technology, Keith focuses on operational excellence and patient-centric research.  

Before founding pRxEngage, Keith launched patientRx Ltd., a consultancy optimizing clinical trials through technology-enhanced patient engagement. He previously served as Operations and Commercial Director at Richmond Pharmacology, where he led teams to achieve significant revenue growth and global recognition for the site.  

Additionally, Keith currently chairs the Fulham Research Ethics Committee (Health Research Authority) and has held advisory and committee roles including EUCROF Early Phase Working Group Chair and CCRA Executive Committee member. Keith leverages his extensive experience to commercialise technology-driven solutions that make clinical research more inclusive, efficient, and collaborative.

David Guthrie​
David Guthrie​ Board of Directors
David’s most recent venture was at REPAY, and prior to that served as the Chief Information Officer and Chief Information Security Officer of Sharecare with oversight of security, IT systems, and M&A assessments for the company.
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Prior to joining Sharecare, he held leadership roles with various private and public companies. These included Chief Technology Officer of MedCast/WebMD with a focus on Webmd.com consumer content and delivery technologies, Chief Technology Officer of PGi, where he led all global technology operations, research and development, product innovations and the integration of numerous acquired technologies.

Additionally, he has served on numerous executive boards and held advisory positions for healthcare IT, communication services companies and electronic payment processors.

David received his Bachelor of Science in Management and Information Systems from the University of Tennessee.

David brings a balance of technical expertise and board-level communication skills.

“I am excited to improve healthcare by leveraging pRxEngage to streamline the management of patient trials using the latest cloud and AI technologies, making life-enhancing and life-saving treatments more accessible to patients.”

Daniel Graff-Radford
Daniel Graff-Radford Board of Directors
Daniel has been a senior executive in 5 enterprises and helped lead 3 successful exits. Prior to Voxco, was the CEO of Allbound, a VC backed software company that successfully exited to a PE firm.
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Currently serving as the CEO of Voxco, a PE backed global leader in survey tools for researchers. 

Prior to being a CEO, Daniel led product and sales organizations at public and private companies. 

Daniel Graff-Radford started his entrepreneurial career while attending Emory University, where he and a partner ran an online travel booking company called African Adventures.

Ethan Graff-Radford
Ethan Graff-Radford Co-Founder & Head of Product
Prior to pRxEngage, Ethan was the Director of IT and Head of Product at Network Progression, a patient tracking platform for law firms, which saw explosive growth from 15 to over 100 people.
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Ethan implemented SDLC / Agile development methodologies across a full-stack dev team, he also oversaw the process of certifying HIPAA compliance.

Prior to Network Progression, Ethan was on the production team at Mountaintop Studios, an Andreessen Horowitz backed game development studio. Besides the product management work, Ethan took their first game through the ESRB ratings process.  

Before working in technology companies, he was a System Administrator at Capstone Academy seeing them move to a virtual environment during Covid. 

Charlie Myrick
Charlie Myrick Co-Founder & Chief Technology Officer
As CTO of pRxEngage, Charlie Myrick spearheads the technology strategy and product development for our innovative clinical trial matching platform.
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Charlie brings a wealth of experience in building and scaling technology solutions, previously serving as the Founding CTO of In The Network. There, he architected a legal-medical case management platform, scaling the company from a three-person startup to over 500 employees and leading a global engineering team to develop NetProApp, a custom CRM utilized daily across the organization.

His career is marked by a consistent focus on building scalable systems and solving complex operational challenges.

Jeffrey Cehelsky
Jeffrey Cehelsky Chief Biopharma Strategy & Solutions Officer
Jeffrey Cehelsky is a seasoned biotech executive with deep operational and strategic experience across drug development, and corporate development.
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His career spans leadership roles at some of the most innovative companies in the life sciences sector, including Millennium Pharmaceuticals, Alnylam Pharmaceuticals, and Intellia Therapeutics.

At Millennium (Takeda), Jeff was involved during a pivotal time in the company’s transformation contributing to cross-functional initiatives that spanned R&D and strategic alliances. At Alnylam, he held key roles in building the company’s early development and clinical alliance capabilities, helping shape the RNAi field’s transition from promise to platform. Later, at Intellia Therapeutics, he worked at the intersection of gene editing science and corporate strategy, helping the company navigate its evolution from a preclinical pioneer to a clinical-stage leader in CRISPR-based therapies. Jeff combines a strong scientific acumen with commercial pragmatism and is known for his ability to guide companies through critical inflection points.

What Jeff brings to pRxEngage?

At pRxEngage, Jeff brings a strategic lens shaped by two decades of navigating complex therapeutic landscapes, from early science to late-stage development and commercial readiness. His experience launching first-in-class technologies and working across alliances gives the team a seasoned partner who understands how to align biotech innovation with sponsor, site, and patient realities. He plays a key role in helping pRxEngage define its value to biopharma partners, sharpen its go-to-market strategy, and ensure that the platform is built with a clear view of the regulatory and operational landscape.

Sabrina L. Johnson
Sabrina L. Johnson Human Resource Business Partner
Sabrina Johnson is a rare-disease mom to a daughter with Angelman Syndrome and a powerful advocate for families in the rare community. She combines more than 15 years of experience across teaching and HR to build inclusive cultures, grow initiatives from the ground up, and create people-centred systems that work in the real world.
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At pRxEngage, Sabrina plays a key role in shaping our mission, ensuring our work reflects the needs of patients, caregivers and communities. She keeps our team focused on empathy, balance and the human experience behind the technology.

Alyssa Quicquaro
Alyssa Quicquaro Outreach and Sponsor Engagement
Alyssa supports outreach, sponsor engagement, and project operations at pRxEngage. She brings experience across clinical research, biotech site operations, and community engagement, underpinned by a degree in Neurobiology from Boston University.
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She began her career at a clinical research site in Boston, managing recruitment, scheduling, and patient visits, before moving into biotech real estate, where she led member engagement and business operations. This gave her early insights into life science innovation before programs reached the clinic.

At pRxEngage, Alyssa focuses on coordinating onboarding, communication, and outreach efforts that strengthen sponsor partnerships and support better patient experiences.

Michael Needleman
Michael Needleman Senior Strategic Advisor
As Senior Strategic Advisor, Michael Needleman leverages 29 years of executive experience from Accenture to guide pRxEngage.
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His impressive background includes pivotal senior roles in venture capital, corporate development, and commercial management, equipping him with a multifaceted perspective on business growth and innovation.

Michael is a proven expert in driving large digital transformation initiatives, with a track record of success for clients across European and US markets. His strategic counsel is further reinforced by his standing as a Fellow of the Institute of Chartered Accountants.

Elad Duschak
Elad Duschak Senior Strategic Advisor
Elad is a seasoned healthcare executive with over 25 years of international experience leading business development and growth strategies within the healthcare industry across publicly traded corporations, start-ups, and scale ups backed by VCs, PEs, and family owned offices.
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He has deep knowledge within healthcare services, pharma, medical devices, and digital health sectors. Elad’s current roles include as a board member for MEDX Xelerator LP, VLX Ventures, Imel Biotherapeutics Inc and senior advisor for a UK-based major investor in health-tech, to an NHS primary care provider on research strategy, and to a global pharmaceutical company on international expansion.

I’m very excited and committed to make innovative, life changing treatments more accessible for patients, and now is the time with the wealth of innovation in medicine, and enabling technologies.”

Our Promise and Values

Learn More or Get Involved

Whether you are a patient exploring your options, a community organisation looking to inform your network, or a research team ready to build trust with patients, we would love to hear from you.