Meet the experts who helped build the fabric of healthcare interoperability

Buff Colchagoff is a visionary technologist and executive leader with over 25 years of experience at the forefront of health information technology and interoperability. As the CEO of RosettaHealth, he has pioneered the transition of healthcare data exchange from complex legacy systems to agile, cloud-native SaaS solutions, enabling organizations of all sizes to exchange critical health information securely and at scale.

Buff’s career is defined by his role as a primary architect of the nation’s health IT infrastructure, including serving as Director of Operations for the Nationwide Health Information Network (NwHIN) and helping develop the VA’s landmark MyHealtheVet personal health record. A recognized advocate for frictionless interoperability, his leadership is rooted in the belief that 

Douglas Hill is a versatile executive and servant leader with over 30 years of experience driving innovation across software development, healthcare IT, telecommunications, and sustainable agriculture. As the COO and President of RosettaHealth, Doug leads a sophisticated SaaS platform designed to remove the friction from global healthcare data exchange.

Throughout his career, Doug has earned a reputation as a high-impact change agent, helping diverse organizations—from startups to massive institutional entities—modernize their software practices and adopt emerging technologies. His leadership is defined by a “team-first” philosophy, where he focuses on forging individual capabilities into high-performing units that deliver customer-centric results. Beyond the technology sector, Doug is a successful entrepreneur who founded and scaled a sustainable family farm, demonstrating a unique ability to build strong brands and exceed revenue forecasts in any market he enters.

Kevin Puscas is a distinguished technology executive and security strategist with over 30 years of experience in software engineering and large-scale systems architecture. In his dual role as Chief Technology Officer and Chief Security Officer, Kevin leads the design, security, and operational integrity of the nation’s most critical healthcare interoperability platforms. His leadership is defined by a "security-first" methodology, ensuring that innovation never comes at the expense of privacy or trust.

Kevin oversees a sophisticated, cloud-native ecosystem that supports modern standards—including FHIR, Direct Secure Messaging, and IHE profiles—enabling seamless connectivity across providers, public health agencies, and national networks. He is a specialist in building resilient, high-availability services that reliably move clinical data while maintaining the rigorous controls required in highly regulated environments.

As a veteran of the tech industry, Kevin is responsible for enterprise compliance programs aligned with HIPAA, SOC 2, and national frameworks like Carequality and TEFCA. By bridging the gap between advanced engineering and strict security protocols, he empowers healthcare organizations to operate at scale with total confidence in their data's safety.