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Our Vision
for Greater Interoperability

In a world where the speed, accuracy, and accessibility of information can mean the difference between success and failure, the valuable data within our healthcare communities have remained trapped and siloed.

At Avaneer Health, we provide the connectivity to guide the healthcare industry into a new era of healthcare experiences: where data is shared, care can be accelerated, and solutions are developed together.

Innovation through Collaboration

Avaneer Health was founded by a consortium of top industry leaders on a mission to unlock the full potential of healthcare by improving transparency and enhancing interoperability.

The consortium included Aetna, a CVS Health company; Anthem; Cleveland Clinic; Health Care Service Corporation, a Mutual Legal Reserve Company (HCSC); The PNC Financial Services Group, Inc.; and Sentara Healthcare. Incorporated in 2020 as the Health Utility Network, we are now known as Avaneer Health. With continuing support from our partners and the biggest players across the healthcare space, we aim to play a key role in transforming how the healthcare industry operates to address consumers' needs more efficiently and effectively.
To learn more about our origin story, read our blog here.

Meet Our Dedicated
Leadership Team

Image of Stuart Hanson

Stuart Hanson

Chief Executive Officer

Stuart Hanson is Chief Executive Officer at Avaneer Health. He is passionate about creating a better consumer healthcare experience and is focused on creating an inclusive network that ensures all stakeholders have access to comprehensive clinical and administrative data when it’s needed most. Stuart previously served in leadership roles for healthcare solutions at JPMorgan Chase, Change Healthcare, Citi, and Fifth Third Bank. He has served as chair of the HIMSS Revenue Cycle Improvement Task Force. Stuart has a bachelor’s degree from University of Illinois and an MBA from University of Chicago Booth School of Business.
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John Tytko

Chief Financial Officer

John Tytko is the Chief Financial Officer at Avaneer Health. He is an entrepreneurial finance professional who is experienced in supporting corporate development initiatives and guiding strategic growth initiatives. Most recently, John served as chief financial offers at SupplyShift, a climate-tech platform for ESG initiatives. Previously, he was vice president of finance at Caremerge, Inc., a company specializing in clinical and engagement SaaS solutions for senior living companies. John has held leadership roles at high-growth companies and began his career at PricewaterhouseCoopers. He graduated with honors from Miami University in Oxford, Ohio and is a certified public accountant.
Image of Ray Jebsen

Ray Jebsen

Chief Commercial Officer

Ray Jebsen is Chief Commercial Officer at Avaneer Health, leading the launch of the network, platform, and solutions. Throughout his career, Ray has focused on improving the administrative and payment efficiencies to create better outcomes and a positive customer experience. He has also led business lines, strategy, and solution development for several organizations including Zelis Healthcare, JPMorgan Chase, CarePayment, Change Healthcare, and Fifth Third Bank. Ray holds an MBA from the University of Illinois and a Bachelor of Science in Operations Research from the United States Coast Guard Academy.
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Elisabeth Cox

Vice President of Human Resources

Elisabeth Cox is Vice President of Human Resources at Avaneer Health and a Forbes-recognized talent acquisition executive. She is an innovative human capital strategist with extensive experience building teams from the ground up. Prior to Avaneer Health, Elisabeth served in human resources and talent leadership roles at Help at Home, LLC, Skills for Chicagoland’s Future, Telecom Brokerage INC., and The Shelby Group. Elisabeth graduated from Northwestern University with a Bachelor of Science in Education and Social Policy.
Image of Steven Nellemann

Steven Nellemann

SVP and General Counsel

Steven Nellemann is Senior Vice President and General Counsel at Avaneer Health, leading the legal and compliance functions to support the company’s business operations and growth initiatives. He has extensive experience working with innovative healthcare start-ups and emerging technologies such as artificial intelligence, machine learning, advanced analytics, and blockchain. Prior to Avaneer Health, he served as Senior Associate General Counsel at Anthem supporting its digital health initiatives, and Senior Counsel with the American Medical Association supporting HIT matters and government affairs. Steven received his Juris Doctorate degree from DePaul University, a Master of Science in Informatics from Northwestern University, and a Master of Business Administration from the University of Chicago Booth School of Business.
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Joe Rostock

Chief Operating Officer

Joe Rostock is the Chief Operating Officer at Avaneer Health, leading engineering, infrastructure, client integration and operations teams. He is a seasoned healthcare industry expert, is skilled at building technology infrastructure for rapidly-scaling healthcare companies, and has a reputation for optimizing technology solutions and operations. Joe joins Avaneer Health from Allscripts and has held executive positions at ComScore, Verizon Communications and Inovalon, where he was responsible for designing and growing tech products and services across business lines.
Image of Gerald Bortis, PhD

Gerald Bortis, PhD

SVP of Software Engineering

Gerald Bortis is Senior Vice President of Software Engineering at Avaneer Health, where he is responsible for platform and solutions development. He has extensive experience in the use of emerging technologies to address the challenges of healthcare interoperability, data fluidity, and population health. Prior to Avaneer Health, Gerald held senior leadership roles in software development at NextGen Healthcare and Mirth Corporation. Gerald has a bachelor’s degree and master’s degree in Information and Computer Science and a doctorate in Software Engineering from the University of California, Irvine.
Image of Lydia Thomas

Lydia Thomas

Head of Information Security

Lydia Thomas is Head of Information Security at Avaneer Health. She has broad experience in security and risk management, incident response, IT operations and management, data privacy, disaster recovery, and regulatory compliance in healthcare and other regulated industries. Before joining Avaneer Health, Lydia served in senior management roles at KPH Healthcare Services, Inc., University of Rochester Medicine, and Crouse Hospital. Lydia attended Pittsburgh Technical College, Jefferson Community College, and State University of New York College at Oswego.

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