About Us

Our experience working with health plans and provider organizations enables us to articulate the needs and concerns of all stakeholders. We develop solutions that leverage the strengths of each party, enabling collaboration for long-term success. Our industry thought leaders are helping to shape the future of provider networks throughout the United States.

Our unique product suite features several propriety technology products that allow us to support the entire provider network life cycle. 

QuadPhase provides a comprehensive, tech-enabled network management solution that mitigates the unsustainable cost of healthcare with value-based analytics to identify, stratify and measure performance. Through our domain knowledge, seasoned team, and proprietary IT we can ensure continuous improvement of your provider network.

Solution: QuadPhase is a professional services and network development organization that specializes in health plan and provider solutions. We develop strategies to enable long-term sustainable growth and profitability, while ensuring a positive provider and member experience.

Relevant Experience: QuadPhase provides network development and optimization services to compile numerous competitive analyses, market landscape assessments, and claims analyses to support network contracting and network optimization efforts.

Customers: Leading national and regional health plans, health systems, ACO’s, IPA’s, specialty providers, and health services companies across the country with references.

Segments: Traditional Commercial programs, Exchanges (Public & Private), Direct-to-employer/ TPA, ACO (MSSP & Other), Health System Transformation, Medicare, Medicare Advantage (EGWP and Individual), Specialty Medicare Advantage programs, Medicaid, Behavioral Health Networks, Dental, Chiro, Transportation, and Specialty Medicaid programs.

Years in Operation: 9


Aaron Ferrell 

Co-Founder and CEO

Aaron founded QuadPhase in 2015 with the goal of creating tech-enabled, end-to-end network development solution for payors, providers, and healthcare services companies throughout the US. Aaron has an overall responsibility for managing day to day operations and consulting engagements for key health plans, hospitals, and healthcare services companies throughout the US.

Before founding QuadPhase, Aaron was the Director of Provider Contracting for Zest Health where he was responsible for developing and executing a complete provider contracting strategy and network for the Illinois market. Aaron also served two tours as a squad leader in the US Army with the 82nd Airborne Infantry Division. Aaron holds a BS in Criminal Justice and a Master of Business Administration from Kennesaw State University.

Karen Ferrell

Co-Founder and Partner  

Karen brings has more than 30 years of healthcare leadership experience serving as the Executive Chairman, CEO or C-suite executive for payor, provider and tech-enabled services companies. She has a strong emphasis on consulting with healthcare companies in the areas of strategy, network operations, value-based care, and most aspects of health plan operations. She brings extensive experience in delivering strong financial results for both publicly traded health plans and private equity-backed healthcare companies.

Karen has served as CEO for Genomic Life, Advantum Health, Glenridge Healthcare Solutions, and Apollo Health Street. These roles have solidified Karen’s proven record of transforming healthcare through tech-enabled solutions. With in-depth experience in both buy-side and sell-side M&A, she has successfully led two companies through exit events. She served as Senior Vice President of Provider Contracting and Medical Management for CIGNA Healthcare where she was responsible for $32 billion in medical costs for more than 12 million members. Karen also held executive leadership positions as Executive Director at Scripps Health, and President of Aetna Health Plans of Florida.

Karen has served on a number of both public and privately held healthcare, network management, bio-tech, pharmaceutical, revenue cycle, and tech-enabled services companies. Karen received an MBA from the Graziadio Business School at Pepperdine University.


Kirby Hill

Senior Director

Kirby joined QuadPhase Healthcare in 2016 as a Healthcare Consultant servicing clients throughout the US. Kirby’s responsibilities include: project management, client engagement, and senior consulting. Kirby previously worked for Evergreen Nephrology and Honest Medical Group which is based out of Nashville, Tennessee where he was responsible for implementing, negotiating and executing a robust provider network for numerous markets.

Kirby served in the US Army with the 82nd Airborne Infantry Division as a part of Operation Iraqi Freedom. Kirby holds a BS in Business Administration. Outside of work, Kirby is an avid outdoorsman, enjoying spending time with family, friends, and his dogs in Arkansas.