Better Data. Better Networks. Better Experience.

About Us

Quest Analytics is the first comprehensive platform that enables health plans to optimize their member experience, while complying with federal and state regulations for network adequacy and accuracy. Our provider data management and network analytics services are trusted by the nation’s leading health plans, insurance regulatory agencies and benefit consultants to provide consumers with convenient access to an adequate network of doctors and hospitals and an up-to-date, accurate directory of providers.

For more information, email us today at contact@questanalytics.com or call us at 920.739.4552.

Our Leadership Team

Ari Tulla

Ari Tulla

Chief Executive Officer
Ari brings his deep background in technology, consumer experience and innovation to Quest Analytics. As co-founder of BetterDoctor, he built the leading primary source verified provider data management solution, which is now a part of Quest Analytics. Prior to BetterDoctor, Ari led Nokia’s game and application studios. He brings over a decade of experience developing thousands of mobile apps and software products for consumers, providers and health plans. He has a passion and personal interest in developing technology that improves the consumer experience and access to healthcare.
John Weis

John P. Weis

President
Co-founder, Quest Analytics
John has brought visionary solutions to the healthcare market for decades. He pioneered the industry’s first accessibility tools and developed partnerships with federal, state and commercial markets. He has evolved the idea of simple access standards to comprehensive automated network adequacy solutions that connect the dots between Network Adequacy and Data Accuracy. His foresight focuses on giving our customers a competitive advantage in the market with new tools and services.
David Hill

David H. Hill

General Manager, Chief Technology Officer
Co-founder, Quest Analytics
David is the architect of both the Quest Analytics and GeoAccess suite of products used extensively by health plans, government regulators and benefits consultants nationwide for the past three decades, creating industry-standard tools to measure access to care, member disruption, network adequacy and compliance. Prior to co-founding Quest Analytics, David was a founding employee and Chief Software Architect at GeoAccess where he built the GeoAccess product line, designed the platform used by CAQH and the infrastructure behind many of the nation’s largest online directory solutions.
Tapio Tolvanen

Tapio Tolvanen

General Manager, Chief Product Officer
Data Solutions
Tapio is the co‑founder of BetterDoctor, the leading primary source verified provider data management solution, which is now part of Quest Analytics. Prior to BetterDoctor, Tapio spent a decade heading technology at Nokia, where he managed and built a variety of technologies from network equipment and mobile devices to consumer-facing software platforms and products.
Jim Rubin

Jim Rubin

Chief Financial Officer
Jim is an experienced financial and operational leader for technology-driven, growth-oriented healthcare and software development companies. Prior to joining Quest Analytics, Jim was the Chief Operating Officer of Asynchrony, the software development arm of World Wide Technology based in St Louis, Missouri. Previously, Jim served as the chief financial officer of Gateway EDI, a healthcare technology company.
Bill Kleinfelter

Bill Kleinfelter, RPh

Executive Vice President of Corporate Development
Bill is a senior health care executive and visionary with more than three decades of expertise across several health care verticals. Prior to joining Quest Analytics, Bill served in leadership roles at Healthgrades, MediMedia, WebMD, Merck-Medco and Medical Marketing Group. Bill also founded The Kleinfelter Group, where he provided consultation, advisory and health care data management services.
Linda Borths
Linda Borths
Linda Borths

Linda Borths

Chief Client Officer
As part of the original visionary team at Quest Analytics, Linda has spent more than a decade ensuring Quest Analytics focus is customer driven. She laid the foundation for strategic growth and is accountable for the 98% client retention. Linda managed the launch of the Quest Cloud Services™ platform and has been instrumental in implementing automated Network Adequacy processes at the federal and state level.
Brent Sanders

Brent Sanders

Chief Commercial Officer
Brent is a proven pioneer and leader in the development of emerging health care technology and for more than 30 years has led high growth companies in EHR, eprescribing, clinical data exchange and payment integrity. Prior to joining Quest Analytics, Brent developed and oversaw HMS' commercial team achieving 400M+ growth over five years. Previously Brent served in senior executive roles at Allscripts and Zix Corporation and served as CEO of Task Technologies, Inc. and President/CEO of Staffing Solutions.
Roger Holstein

Roger Holstein

Executive Chairman
In addition to his role at Quest Analytics, Roger serves as Managing Director at Vestar Capital Partners. He joined the firm in 2006, bringing with him over 30 years’ experience in healthcare services. At Vestar, Roger has led investments and served on the Boards of Press Ganey, Healthgrades and Staywell Corporation. Prior to Vestar, Roger served as CEO of WebMD, and a member of the Office of the President at Medco.