Jonathan Kay, Founder & Managing Partner

Jonathan Kay is a trusted adviser to health and life sciences leaders and innovators. For 25 years, he has helped clients bring to market new technologies that address unmet needs. Jon founded Health Market Experts, LLC, to help clients understand complex markets, set strategies based on research, and implement them.

Earlier, he was a reimbursement strategy consultant (Covance Health Economics and Outcomes). He then co-founded the venture-backed start-up Jstreetdata.com, helping to pioneer the online medical market research industry. After being acquired (by InterPublic Group and later by TNS and Kantar/WPP), Jon grew the assets sold, served in leadership roles, and built two intrapreneurial ventures. Jon was Global Head of Healthcare at PSB Research, where he formed the healthcare practice and led it for a decade. He served in executive roles at Kantar Health (now Cerner Enviza).

A leader who builds diverse, multi-disciplinary teams, Jon is also a valued mentor who develops careers. He is a volunteer board member at the Brem Foundation to Defeat Breast Cancer and a volunteer mentor at the Maryland Tech Council’s acclaimed Venture Mentoring Services Program.

Recently, he completed the Executive Program on Artificial Intelligence: Implications for Business Strategy at the MIT Sloan School of Management. Jon earned a B.A. from Cornell and a Master in Public Policy from the Harvard Kennedy School of Government.

Marissa Schwartz, MSN – Clinical & Strategy Consultant

Marissa is a clinician and healthcare researcher with experience advising clients across the healthcare ecosystem on strategy, operations, finance, and clinical issues. Marissa works as a family nurse practitioner in a large urology practice and has experience working with individuals with behavioral health concerns and substance use disorders. Prior to her clinical career, Marissa spent five years in clinical research and healthcare consulting. At Health Market Experts, LLC, Marissa has collaborated on numerous projects including digital health/AI, medical device, biotechnology and pharmaceutical, and retail pharmacy engagements.

Marissa earned a Bachelor of Arts (BA) in Psychology, Summa Cum Laude from the University of Pennsylvania, and a Bachelor of Science in Nursing (BSN) and a Masters of Science in Nursing (MSN) from Emory University.

Shiri Kalai, MPH - Public Health & Research Consultant

Shiri Kalai is a consultant at Health Market Experts, where she supports research and process management for clients across healthcare and life sciences. Her recent work focuses on improving outcomes in community oncology, including designing national surveys, participating in stakeholder interviews, and delivering actionable insights that inform strategic decisions. Her background is in public health, with a focus on equity and access as well as global contexts. Her past roles include project management at the HEAL Refugee and Asylum Collaborative, where she contributed to initiatives such as expanding access to mental health support groups for young parents. Shiri also conducts primary and secondary research with the World Health Organization’s mental health team to inform global guidance on scalable, school-based mental health interventions. Shiri holds a Master of Science in Public Health (MSPH) from the Johns Hopkins Bloomberg School of Public Health, with a concentration in International Health and Social and Behavioral Interventions. She earned her BA from Johns Hopkins University, with majors in Public Health Studies and Spanish.