Meet our leadership team
Definitive Healthcare is founder-led to this day, and we consider every voice in the company key to our growing success.
Jason Krantz, Executive Chairman,
As Executive Chairman and Founder of Definitive Healthcare, Jason drives a client-centric approach to the business strategy and oversees the overall vision of the organization.
He has built several research-based businesses focused on providing the highest quality and most timely data in information-intensive industries. Before founding Definitive Healthcare in 2011, Jason started Infinata. The company, founded in 1999, provided online databases of information for the pharmaceutical industry under the brand BioPharm Insight.
Jason is an owner and board member of several data and media businesses in the healthcare sector and an industry expert on healthcare trends and developments. He is also a former McKinsey & Company consultant.
Jason holds undergraduate degrees in Finance and Computer Science from Boston College, and an MBA from Harvard Business School.
Robert Musslewhite, Chief Executive Officer
Robert Musslewhite is the Chief Executive Officer of Definitive Healthcare and has served as a member of the board of directors of the Company since June 2021. Prior to joining Definitive Healthcare, Mr. Musslewhite was the Chief Executive Officer of OptumInsight, a division of Optum. Mr. Musslewhite joined Optum following its acquisition of The Advisory Board Company, where he served as Chief Executive Officer from 2008 until 2017 and Chairman from 2013 to 2017. Prior to joining The Advisory Board Company, Mr. Musslewhite was an Associate Principal with McKinsey & Company, a global management consulting firm.
Mr. Musslewhite currently serves on the Boards of Directors of CoStar Group (Nasdaq: CSGP) and Ascend Learning. He is a member of the Economics Club of Washington D.C., and he recently completed service as Chair of the Board of Governors of St. Albans School.
Mr. Musslewhite received a J.D. from Harvard Law School and an A.B. in Economics from Princeton University.
Outside of the office, Mr. Musslewhite is a long-suffering Dallas Cowboys fan and an avid outdoorsman who loves spending time with his kids hiking and skiing.
Jon Maack, President
As President of Definitive Healthcare, Jon works across the business to drive results for our customers, shareholders and the broader healthcare ecosystem. He directly oversees cross-cutting corporate initiatives, product, engineering, corporate strategy and M&A.
Jon brings more than 20 years of healthcare experience, with a focus on accelerating growth through product launches, partnerships and M&A and driving operational improvement through process redesign, clear metrics and accountability.
Prior to joining Definitive Healthcare, Jon served as Chief Strategy and Corporate Development Officer at athenahealth, where he helped set strategy and drive execution. Prior to that, he was the Chief Strategy Officer at OptumInsight, where he led an operational and organizational transformation that simplified and focused the organization, materially reduced costs and set the business up for long-term growth. Jon also served as the General Manager of the Health System Growth business at the Advisory Board Company, which focused on helping health systems market to patients and physicians.
Jon holds an undergraduate degree in Art History with minors in Economics and German from New York University, and an MBA from The Wharton School of the University of Pennsylvania.
When Jon is not deep in operational discussions, you can find him playing Pokemon Go with his two children, hand-selling his wife’s newest novel or cooking up a meal for friends and neighbors.
Rick Booth, Chief Financial Officer
Rick Booth is the Chief Financial Officer for Definitive Healthcare. Rick brings 30 years of experience providing financial, strategic, and operational leadership to rapidly growing global technology companies.
Prior to joining Definitive Healthcare, Rick was the CFO of Bottomline Technologies (NASDAQ: EPAY), a leading FinTech provider of business to business payment SaaS solutions. Previously he held leadership positions with Sapient Corporation, Nuance Communications and Dell/EMC.
Rick holds an MBA from Stanford University, where he was an Arjay Miller Scholar. He is a licensed CPA.
When he’s not thinking about revenue targets and operating income, you’ll find Rick studying presidential biographies or spending time with his wife and two kids in Wayland.
Joe Mirisola, Chief Revenue Officer
As Chief Revenue Officer of Definitive Healthcare, Joe oversees the company’s account management, customer experience, enterprise accounts, inside sales, new business, sales engineering, and sales enablement/operations divisions.
Joe brings nearly a decade of experience in healthcare intelligence and analytics sales and, with this, a strong background in building strategic business partnerships, improving processes, and developing and managing start-ups.
Prior to joining Definitive Healthcare, Joe served as a commercial operations partner at Universal Home Lending Corporation. Previously, he served as VP of operations at Universal Unsecured Lending Corporation, and as a mortgage banker at Nation’s Mortgage.
Joe attended the University of Massachusetts at Dartmouth, where he studied Management Information Systems.
When Joe is not talking to customers about how healthcare data can change their lives, you can find him spending time with his wife and two young sons fishing and beaching it on Cape Cod. Joe most recently started volunteer coaching his son’s learn-to-skate program and is actively involved in the local youth hockey program.
Kate Shamsuddin Jensen,
Chief Product Officer
As Chief Product Officer of Definitive Healthcare, Kate leads the company’s product innovation and market strategy. She also works in support of operational initiatives across sales and marketing that drive market penetration and execution. Before joining Definitive Healthcare, Kate worked on the product development team within strategic services at Blue Cross Blue Shield. She began her career as a health analyst at RTI International, an independent non-profit research institute dedicated to improving the human condition worldwide.
Kate holds undergraduate degrees in Anthropology and Global Health from Emory College, and a master’s degree from Harvard School of Public Health.
When Kate is not planning Definitive Healthcare’s next product release, you can find her trying out new recipes in the kitchen (beef wellington is up next). As an avid cook and a lover of the outdoors, Kate and her husband spend much of their time bouncing between the kitchen and the garden—which is quickly expanding with new blooms each season.
Justin Steinman, Chief Marketing Officer
As Chief Marketing Officer of Definitive Healthcare, Justin is responsible for the strategy, development, and execution of all aspects of marketing for the company, including product marketing, demand generation, corporate marketing, public relations, and corporate communications.
Prior to joining Definitive Healthcare, Justin served as the vice president of commercial product management at Aetna, a CVS Health company. Previously, he served as Chief Marketing Officer at GE Healthcare Digital, and in a variety of sales & marketing roles at Novell.
Justin holds undergraduate degrees in English and History from Dartmouth College, and an MBA from the MIT Sloan School of Management.
When Justin is not debating the finer points of product positioning or lead generation campaigns, you can find him on a Little League baseball field in Natick—where he has coached for nearly a decade—or sitting on the beach in Maine with a good book and a newspaper.
Scott Oberlink, Chief Technology Officer
As CTO of Definitive Healthcare, Scott is responsible for the company’s engineering and product development, enterprise architecture, infrastructure, field support, and information security.
Scott has nearly 30 years of experience in software engineering, with a focus in healthcare IT. Prior to his role at Definitive Healthcare, Scott served as Senior VP of Engineering and Product Management at Evolent Health—building an industry leading population health and care management platform.
Prior to Evolent, Scott spent a decade at Anthem Blue Cross Blue Shield where he led development of the Employer, Provider and Consumer Portals. Early in his career, he served in various hands-on engineering roles building enterprise systems in defense, telecom, and healthcare.
Scott holds an undergraduate degree in Economics and a master’s degree in Public Policy, both from Western Michigan University.
When Scott pulls himself out of the proverbial technology clouds, you can find him getting his groove on. As an avid music fan, Scott enjoys playing guitar with small groups of friends and attending any live music event he can get to. Scott also enjoys running, backpacking, and spending weekends at the beach.
Matt Ruderman, Chief Legal Officer
As Chief Legal Officer, Matt Ruderman leads Definitive Healthcare’s legal department, providing risk-adjusted, practical guidance throughout the business. In this role, Matt oversees our commercial contracts, privacy, and corporate governance teams, and together with those teams, provides legal support on day-to-day matters as well as large, cross-functional efforts such as M&A, capital markets transactions, marketing and branding campaigns, and go-to-market initiatives. Matt also supports the Board of Directors in his role as Corporate Secretary.
Prior to serving as Chief Legal Officer, Matt was Definitive Healthcare’s VP, Assistant General Counsel and Assistant Secretary. Before joining Definitive Healthcare, he handled various legal roles at Citrix Systems, including serving as Citrix’s lead M&A attorney, and prior to that spent a number of years at leading, global law firms Cooley LLP and Hogan Lovells.
Matt holds an undergraduate degree from American University and a J.D. degree from Boston College Law School.
Outside of work, Matt enjoys spending time with his wife and two young kids, and falling somewhere in the range of poor to mediocre at a host of hobbies from cooking, to playing and recording music, to fantasy football.
Ram Sharma, Executive Vice President, Life Sciences
Ram Sharma is the Executive Vice President, Life Sciences for Definitive Healthcare. Prior to joining Definitive Healthcare, Ram was Chief Executive Officer and Founder of Analytical Wizards.
Over his career, Ram has held executive positions at Accenture, Merkle and Princeton Brand Econometrics where he led significant analytical and strategic projects for clients in life sciences and other industries. He has rich experience in product innovation and development across companies like Target Rx, TNS Global, Merkle and Accenture.
Ram holds a PhD (ABD) in operations research from the University of Pennsylvania and a bachelor’s degree in operations research and industrial engineering from the Indian Institute of Technology (IIT), Kharagpur, among the premier institutes for STEM and engineering across the world.
When Ram is not thinking up the next set of game-changing technological and analytical advances, you can find him scaling literal heights of different mountain ranges, hiking trails, biking the Minute Man trail, learning Spanish, reading tech-innovation-related articles, having fun with family and friends, traveling the globe and giving back in any measure to society and his community.