Who We Are

Innovating for a better tomorrow.

We’re a group of seasoned entrepreneurs, eager to champion your solution within NGHS.

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Mark Rainosek

Managing Director

Mark Rainosek is the co-founder and chief executive officer of Prinnovo, LLC, as well as a managing director of Northeast Georgia Health Ventures, LLC. Mark has founded and developed multiple innovative technology companies over the past 30 years, resulting in three successful exits to public companies.

Mark has significant experience building business plans and financial models, raising growth capital, and developing early-stage technology companies, especially in partnership with large, strategic organizations.

Mark co-founded Prinnovo to help small to mid-size independent health systems become more innovative in order to develop new margin sources and ways to care for their communities.

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Jay Brennan

Managing Director

Jay has extensive experience over the past 20 years working with startups, leading turnarounds, and coaching and developing entrepreneurs. After starting in the technology transfer world – evaluating and raising capital for promising startups – Jay moved into operations-consulting work for privately held companies in the Greensboro, NC area.

As cofounder of Prinnovo, LLC, Jay hires, trains and manages the staff of each health venture office, developing close relationships with health system leaders and coaching and guiding the entrepreneurial partners to deliver innovative solutions that solve the health system’s most pressing needs.

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Stuart Bracken

Managing Director

A successful entrepreneur, Stuart Bracken’s career to date includes co-founding three separate companies. His experience includes expertise in Mobile, SAAS, and License models.

Stuart was co-founder, CEO and board member of Bioscape Digital, a patient engagement platform company.

Stuart holds a bachelor’s degree in Business and Information Systems and a master’s in Accounting from Wake Forest University as well as an MBA from The Goizueta Business School at Emory University. He is a recipient of the Atlanta Business Chronicle’s 40 under 40 award.

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Peter Quarterman

Venture Director

Peter Quarterman began his career as chief of staff at Aces Health, a healthcare tech startup, and continued to lead the operations team there until its acquisition in 2018.

As the years progressed, Peter worked in operations roles at various startups in the healthcare and fintech industries while priding himself on attention to detail, strategic thinking, and operational excellence.

Peter serves as a strategic advisor for several startups in the healthcare and fintech sectors.

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Jaxon Sommers

Venture Operation Manager

Jaxon started his career working in medical device sales and went on to work as a product development analyst for a medical technology company, where he managed multi-year new product development projects with $1+ million budgets.

He earned his bachelor’s degree in biomedical engineering from the University of Minnesota before moving to Atlanta in 2020 to get his master’s degree in biomedical innovation and development from Georgia Tech.

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