Meet our Leadership Team

Bret Connor joined Model N in January 2025 as Chief Executive Officer. Prior to Model N, Bret served as the Chief Operating Officer at athenahealth, a $2.4B SaaS platform for medical practices. During his tenure at athenahealth, Bret helped take the company private, executed strategic M&A, recapitalized the company with a $17B valuation, and achieved a #1 NPS ranking.

Prior to athenahealth, Bret was an executive at VMware, where he led their Professional Services business in the Americas. In addition to his technology leadership roles, Bret was a consulting leader at McKinsey & Company, specializing in high-tech business transformations. He also held roles at Goldman Sachs, Commerzbank AG, and Putnam, Hayes & Bartlett.

Bret received his BA in Economics at the University of Chicago and earned his MBA at Harvard Business School. He lives in Cambridge, Massachusetts with his wife and daughter. He is a member of the Board of Trustees for the Perkins School for the Blind.

As Chief Growth Officer at Model N, Chris Crucitti leads the company’s global growth strategy, integrating cross-functional go-to-market execution, sales, marketing and strategic partnerships to accelerate revenue expansion and long-term value creation.

Chris brings nearly three decades of executive leadership experience across the life sciences, technology, and digital health sectors. Prior to joining Model N, he served as Chief Revenue Officer at Norstella, where he led global commercial strategy for a portfolio of market-defining healthcare intelligence and technology brands—including Citeline, Evaluate, MMIT, Panalgo, Skipta, and The Dedham Group. Earlier in his career, he held senior executive, commercial and operational leadership roles at Clinical Ink, Signant Health, Science Exchange, Syneos, and Worldwide Clinical Trials.

A proven growth leader, Chris has built and scaled global organizations spanning SaaS, data, and services, consistently delivering accelerated revenue performance and enhanced customer outcomes. His expertise extends across enterprise sales, marketing, pricing, product alignment, and global market strategy, with deep experience supporting life science organizations through complex clinical, commercialization and compliance challenges.

Chris holds a Master of Science in Health Management from American University and a Bachelor of Science from Ithaca College. He also serves as a strategic advisor to emerging healthcare and technology companies and is active in community and leadership development initiatives.

Dave Gelhar joined Model N in 2016 through its acquisition of Revitas and is currently Senior Vice President of Strategic Projects, responsible for leading strategic initiatives that accelerate the company’s SaaS transformation and operational excellence. Previously, Dave served as Vice President of SaaS Strategy at Model N, where he led strategic planning, roadmap development, and go-to-market initiatives to support the company’s growth and shift to the cloud. 

Dave brings over 25 years of experience in enterprise software, solution engineering, and services leadership with a deep focus on the life sciences, pharmaceutical, and manufacturing industries. Earlier in his career, he held senior leadership roles at Revitas (formerly iMANY), including Director of Solution Engineering, where he managed global pre-sales teams and developed value-based tools to drive customer adoption. He also served as Senior Director of Professional Services, overseeing large-scale client implementations and service delivery. 

Dave holds a B.S. in Business Management with a concentration in Human Resources from Plymouth State University. 

Amar Jani serves as Chief Financial Officer at Model N, leading the company’s financial strategy, operations, and planning. With over 25 years experience and a strong background in both finance and the software industry, Mr. Jani plays a key role in driving growth, operational efficiency, and long-term value creation.  Prior to joining Model N, he was Chief Financial Officer at Medable, a leading clinical trial software platform for the life sciences industry, where he drove business transformation through growth and strategic execution. Prior to Medable, Mr. Jani held senior executive finance positions at Celonis and Alteryx where he successfully scaled the organizations through hyper growth stages by leading financial planning, capital funding, and analytics for public and private enterprise software companies.  Earlier in his career, he led teams at AT&T, Hewlett-Packard, and PricewaterhouseCoppers.  Mr. Jani holds an MBA from the Haas School of Business at UC Berkeley and a BA in Economics from UCLA.  He resides in Southern California with his wife and two daughters.

Dan Koellhofer joined Model N in January 2026 as the Chief Product Officer (CPO), where he leads the company’s product strategy and innovation efforts. Prior to Model N, he served as Senior Vice President of Applications for Sales & Marketing at Anaplan.

Dan has held multiple executive product leadership roles, including Chief Product Officer at ScaleGrid, a leading multi-cloud DBaaS provider, and Operating Partner at Spotlight Equity. Earlier, Dan held a sales leadership role at SparkCognition, a GenAI SaaS company focused on industrial AI applications. He also served as Chief Innovation Officer at First Advantage (acquired by Silver Lake) and spent 13 years at CallidusCloud (acquired by SAP) in a variety of roles leading product management, innovation, and the global technical sales organization.

Dan graduated with honors from the University of Michigan with a degree in Electrical Engineering and Computer Science. Outside of work, he enjoys playing tennis with his wife and cheering on his twin boys at weekend-long swim meets.

Rehmann Rayani joined Model N in 2018 and is currently Chief Services Officer, responsible for leading all services lines including Professional Services, Application Services, Business Services, Education Services, and Services Operations. Previously, Rehmann was Chief Strategy & Marketing Officer at Model N responsible for Corporate Strategy, Corporate Development, and Global Marketing during a period of business model transformation which led to the company sale to Vista Equity Partners in 2024. Rehmann brings 20+ years of experience in enterprise software and technology as a strategy and go-to-market leader. Earlier in his career, Rehmann held various management roles at Plex Systems (sold to Rockwell Automation), Oliver Wyman, and ValueAct Capital.

Rehmann holds an MBA from The Wharton School of the University of Pennsylvania and a degree in finance and physics from McGill University.

Angel Rogers is a senior Customer Experience executive with over 17 years of experience leading customer-facing teams and functions at top technology companies. Most recently, she led Global Customer Success and Renewals at Rockwell Automation, where she was responsible for driving customer value realization and recurring revenue growth across software, services, and product portfolios. Prior to Rockwell, Angel held leadership roles focused on building strategic customer relationships and scaling high-impact teams.

Angel is deeply committed to cultivating inclusive, safe, and high-performing environments that empower teams and drive business outcomes. She is also active in community and industry engagement, serving on external advisory councils, participating in Employee Resource Groups, and currently leading as President of the Tennessee Chapter of the Gift of Adoption board. She holds a degree in Communications and lives in Nashville with her family.

Dave Schur joined Model N in January 2026 as Chief Technology Officer (CTO) with a proven track record in driving product roadmap definition, development, and execution of commercial large scale SaaS Cloud software. Dave is an accomplished and passionate technology executive with deep engineering expertise in large scale global product development organizations and SaaS operations.

Prior to Model N, Dave was the CTO of Sphera (a Blackstone portfolio company) where he led the technology and innovation teams to deliver and operate world-class SaaS-based offerings in SpheraCloud, which he created. Prior to joining Sphera, Dave was the vice president of product development for CCC Information Services – a SaaS insurance claims management company – where he drove the development and deployment of their insurance-carrier offerings since 2013. Prior to CCC, Dave ran the flagship product lines for SPSS, a data statistics software company, launching the enterprise Predictive Analytics offerings and integrating their technologies via acquisition into IBM.

Dave received his BS in Computer and Electrical Engineering from Purdue University. He lives in Chicago, Illinois. In his free time, Dave enjoys being outdoors whenever he can, whether it’s hiking, biking, windsurfing, kayaking, boating, or fishing.

Missy Waggoner joined Model N in September 2024 as the company’s Chief People Officer. Missy fosters an environment where employees can learn, grow, and thrive by focusing on the holistic Employee Experience, Talent Acquisition, Total Rewards, and Learning and Development.

Prior to Model N, Missy was the Chief People Officer of Apptio, an IBM company, and built her career in recruiting and talent acquisition with companies such as T-Mobile, Microsoft and Amazon.

Missy is passionate about enhancing business outcomes by cultivating an employee experience that inspires and motivates employees to do their best work. She prioritizes a human-first approach, she’s results driven, and continuously seeks improvement.

Missy earned her bachelor’s degree from Oglethorpe University in Atlanta, GA.