About Us
Decimal.health is a boutique digital health innovation consultancy, crafting bespoke strategies for our clients that work in the real world. We’re physician led, launched by a primary care doctor who has more than a decade of experience leading digital health innovation.
We pride ourselves on taking a nimble approach that connects strategy with action, going deeper than other strategy firms. We live at the intersection of digital health transformation and the organizations engaged in it. Our international team deploys our real-world experience, never forgetting who our work will ultimately benefit – patients.

Kamal Jethwani, MD, MPH
Managing Partner and CEO

Ann Stadjuhar
Partner, Growth Practice
Ann has 20+ years’ experience in digital healthcare organizations focused on sales growth with a long track record of devising product market fit and building successful sales organizations with over $100M in revenues.
Most recently Ann served as the VP of Digital Healthcare Strategy at Optum Advisory Services, where she focused on payer, provider and pharmacy benefits projects. Ann has also helped several start-ups devising sales and scaling strategies in virtual reality, remote patient monitoring, telemedicine, patient engagement and AI. She has helped in several VC raises with ties to the investment community.

Sarah Boone
Associate Partner, Strategy Practice
Sarah joins the team with over 8 years of experience in strategy, innovation, and entrepreneurship. She has advised companies such as Pfizer, UCB Biopharma, and Siemens Healthineers on digital health strategies, and has guided Switzerland’s most promising hi-tech start-ups when working for >>venture>>, the country’s leading start-up competition. Sarah holds a PhD in business economics and a master’s degree in business engineering.

Manasvini Mehta
Associate Partner, Strategy Practice

Nicole J. Guerra
Senior Director of Operations
Nicole joins the team with over 15 years of experience designing, building, implementing, and training foundational processes and systems that can withstand the growth of an organization. Nicole is passionate about standardizing foundational processes and creating a functional tech stack that will support data-driven decisions. Nicole has worked with innovative organizations in the early stages of development ranging from virtual reality to telepharmacy, and patient engagement AI.

Kassandra Karpathakis
Engagement Manager, Strategy Practice
Kassandra brings 7+ years of experience at the intersection of digital health, public health, and the public sector. She led AI strategy and policy for the English NHS, she collaborated with international health organizations, and created an original service for evaluating digital public health interventions for the U.K. Government. Kassandra holds a master’s in public health from Harvard University.