Partnership, to the next power

We were founded on the core idea that every healthcare dollar matters.

For over 30 years Exponent Health, formerly HRGi, has worked to develop powerful tools for our clients to control their costs. From large, national payors and Blues plans, to PBMs and TPAs, we love being exponential to your success.

Today, through our proprietary ExpionIQ™ platform, we deliver the critical technology, predictive intelligence, and actionable insights necessary for true healthcare cost management and revenue optimization. We manage over $3.2 Billion in healthcare spend on behalf of our clients, supported by best-in-class operations and the highest security and compliance standards including HITRUST certification.

Together, we’re powering the future of healthcare cost management.

in spend managed in 2021

national and regional payor clients

>5 years
average client tenure

97% customer satisfaction
rating based on 2021 customer survey

Teamwork, to the Next Power

Our team is filled with industry experts with an entrepreneurial spirit.
Meet the team that is building the future of healthcare cost management:


Karin Humphrey

With a strong entrepreneurial spirit, Karin has dedicated her career to transforming and evolving cost management – and building some of the biggest names in the industry. She shares her distinctive vision with our clients and our team, having experienced all facets of the pharmacy benefits management space. Karin drives the overall vision and growth strategies of Exponent Health and empowers the organization to develop the future of healthcare cost management. She graduated Cum Laude from the University of Nevada, Las Vegas and holds a Master's in Business Administration.

Exponent Factor:

Champions innovation for the success and growth of our clients.

EVP, Chief Client Officer

Chris Westbrook

Chris joined Exponent Health with a strong track record of building successful strategic partnerships in the pharmacy benefits management space at organizations such as OptumRx. He leads with the philosophy that strong relationships lead to strong results. At Exponent Health he is responsible for our overall pharmacy solutions practice including growth, innovation, and cultivating high-performing teams dedicated to creating value for our clients. Chris earned his MBA from the University of Georgia.

Exponent Factor:

Passionately advocates for a client-centric culture.

Chief Transformation Officer

D.S. Suresh Kumar

A proven technology leader for over 20 years, Suresh has led strategy, innovation, and product development to help payors and providers reduce the cost of care and increase patient engagement. Suresh drives transformation by fostering a culture that is collaborative, curious, and passionate about technology. He holds a Bachelors of Engineering degree from the Birla Institute of Technology and Sciences.

Exponent Factor:

Powers innovation and growth with information, automation and AI.

Chief Operating Officer

John Ollis

John draws on his diverse background in sales, operations, consulting, and executive coaching to lead operations and medical claims solutions at Exponent Health. He combines financial rigor with big picture thinking to drive high-performing teams, partnerships, solutions, and results for our clients. John holds a Bachelor of Science degree in Biology from Bowdoin College and obtained his coaching degree from the Institute for Professional Excellence in Coaching.

Exponent Factor:

Brings his distinctive “what if” approach, plus an operational mindset, to creating new solutions.

Chief Financial Officer

Andrea Papa

A highly strategic finance, accounting, and operations executive, Andrea has supported business growth and profitability in mid-sized and multibillion-dollar organizations. She is responsible for the complete financial lifecycles, pricing, and analytics for Exponent Health. Andrea believes organizational growth and stability are essential for delivering the most value and innovation to our clients. She holds a Master of Science Degree in Accounting from Virginia Tech.

Exponent Factor:

Brings a full picture approach to financial strategy.

Managing Partner, Medical Services

Linda Plaster

Linda brings decades of healthcare leadership and entrepreneurial experience to Exponent Health. She has built and operated numerous healthcare businesses in medical cost containment and is dedicated to innovative and creative solutions that assist healthcare payers in their quest for growth. Linda earned her undergraduate degree in Business and Allied Health from Tampa College and has completed advanced coursework in Management and Finance at the Isenberg School of Management at the University of Massachusetts Amherst.

Exponent Factor:

Contributes a persistent focus on opportunities to create value for our clients.

VP, Clinical Solutions

Jeremy Garris

Jeremy combines a wealth of industry expertise and business acumen to create innovative relationships and strategies for Exponent Health clients. He leads our clinical strategy practice consulting on formulary and specialty products and providing strategies for enhancing clinical support and satisfaction for members. Jeremy earned a Bachelor of Science in biology from the University of Kentucky and a Bachelor of Science in pharmacy from the University of Rhode Island.

Exponent Factor:

Combines care, compassion, and insight to drive clinical solutions for client needs.

SVP, Operations

DJ Reid

DJ’s philosophy is that successful client solutions are the product of data, technology, and trusted partnerships. He enjoys working directly with clients to identify areas where innovation can help optimize performance and savings. DJ leads the Exponent Health medical claims management and provider services teams, overseeing product management, client services, and implementation. He holds a Master’s in Public Health from the University of Florida.

Exponent Factor:

Approaches a client’s business with an analytical and curious mindset.

Careers, to the Next Power

We’re always on the lookout for great talent to help build the future of healthcare cost management. Our culture values innovative thinking, inventive solutions, and building a better future in healthcare. We strive to be a great place to work and over half of our employees have been with the company for 10+ years. Check out our current openings on LinkedIn or send us a note and let us know how you want to help power the future of healthcare cost management.

careers contact us