Meet the Team Behind the Leading Chronic Disease Management Platform

We’ve combined cutting edge AI, smart connected devices, and expert coaching to create the leading integrated digital chronic disease management & prevention platform.

Our Story


Our CEO, Julia Hu, founded Lark in 2011 to improve access to chronic disease management and prevention tools. Having managed her own chronic disease since childhood, Julia felt the incredible challenges that go with it, as well as the benefits of a supportive, compassionate care team. Together with health experts and coaches from Stanford, Harvard and MIT, as well as artificial intelligence and connected device technologists, they developed Lark. Today, Lark is the leading integrated chronic care platform, providing at-risk members with a smart connected device, an AI-driven mobile app, and expert coaching to manage their condition. Now proven to drive clinical outcomes across diabetes, hypertension, prediabetes, and behavioral health coaching, Lark has been rapidly implemented by leading health plans and large employers.

Our Leadership Team


Julia Hu

CEO | Founder

Julia Hu is an American entrepreneur and the co-founder and CEO of Lark. Founded on the personal experience of having grown up with an undiagnosed chronic condition, Julia is passionate about bringing compassionate care to those struggling with or at risk of chronic disease. Hu was named one of the “Top 10 Women in Tech” by Forbes and was a winner of Inc. Magazine’s “30 under 30”. Prior to founding Lark in 2011, Julia ran global startup incubator, the Clean Tech Open, built a sustainable construction startup, and was an Entrepreneur-in-Residence at Stanford’s StartX incubator. She is on the board of the Council for Diabetes Prevention and a Singularity University faculty member. Hu received her Master’s and Bachelor’s degrees at Stanford University and half of an MBA from MIT Sloan before founding Lark. Julia loves to stay fit with hip hop.

Jeff Zira

CTO, VP Product | Founder

As the technical cofounder, Jeff is continuing to discover how to apply technology to bring humanity and connection to people with chronic conditions. Prior to Lark, Jeff co-founded and sold a social networking startup in Japan, co-founded Sanergy, the waterless sanitation startup at MIT that now has 250 employees, architected the backend tools to improve Kiva’s microfinance platform, and Product Managed Yahoo.com’s homepage.

Jeff has a BS from UC Santa Barbara and MBA from MIT Sloan. When possible, Jeff spends at least one whole day each weekend meditating.

Cameron Jacox

VP, Growth

As Vice President of Growth, Cameron leads the team responsible for commercializing and scaling Lark’s technology. Cameron has led a series of teams to rapidly scale VC-backed companies, and he was named “Top 30 Under 30” in InsurTech. Prior to Lark, Cameron served as Vice President of Growth at MyFinance (acquired by NYSE: RATE), and prior to that as Co-founder and CEO of Inforcepro.io (acquired by Covr Technologies). Jacox also serves as Advisor to numerous early and growth-stage startups and has spoken and written widely on Growth. He is a contributor to Forbes and received his B.Sc in Management from Babson College. When he’s not working, Cameron spends time with his much better half, enjoys running marathons, and rides a Harley.

Chris Hewitt

Head of Enterprise Healthcare Partnerships

Chris is a highly accomplished healthcare executive with over 30 years of experience commercializing healthcare solutions into provider, payor, employer, and government channels. Prior to Lark, Chris was a founding team member at FastMark, and Vice President of Sales at Krames/StayWell. He is passionate about leveraging technology and new healthcare delivery models to make healthcare affordable, accessible and impactful. He received his BA in History at Cal Poly San Luis Obispo.

Kevin Delury

VP, Healthcare Operations

A seasoned healthcare leader, Kevin has been working to materially improve the healthcare industry for more than 15 years. Prior to joining Lark, he was a healthcare consultant at Booz Allen Hamilton, advising payors and providers on ways to improve operations and care delivery design to drive positive member/patient outcomes. He also led operations inside large payors and high growth Health IT companies such as Blue Shield of California and Castlight Health respectively. Kevin received his MBA from UC Davis. 

Dr. Robert Gabbay

Senior Clinical Advisor

Robert A. Gabbay, MD, PhD, has 20 years of clinical and research experience and is Chief Medical Officer and Senior Vice President at Joslin Diabetes Center. His research focuses on improving primary care health care delivery to enhance diabetes outcomes and patients’ experiences.

Dr. Gabbay served as faculty chair of Pennsylvania’s statewide Chronic Care Model-focused Patient Centered Medical Home (PCMH) initiative (Chronic Care Initiative) involving more than 150 primary care practices with support from 17 payers. Throughout his career, Dr. Gabbay has been committed to providing the best quality possible to diabetes patients while exceeding the highest national clinical quality measures.  

Dr. Sharon Rapoport

VP, Data Science

As Lark Health’s Vice President of Data Science, Sharon leads a dynamic team whose efforts inform the behavioral interventions at the heart of Lark’s products. Dr. Rapoport’s team is focused on applying AI and ML models to personalize the Lark coaching experience, identify and enhance clinical outcomes, and drive member engagement.

Prior to Lark, Sharon led Data Science at a number of successful startups, including as employee #5 at Plaid, the data-driven FinTech platform acquired by Visa in 2019 for $5.65 billion. Dr. Rapoport received her B.Sc in Physics from MIT and her Ph.D in Astrophysics.

Vadim Axelrod

VP, Technical Partnerships and Integrations

Vadim is a customer-focused technologist with a passion for delivering revolutionary technological solutions to real-world problems for users. He is responsible for engineering processes, technical partnerships and security at Lark. For the last 2 decades, Vadim has founded and scaled transformational VC-backed companies in the health care technology, networking, real estate technology, security and educational technology as CTO and VP of Engineering including Rentals.com as co-founder and CTO (acquired by Primedia) and Business Signatures as Principal Technologist (acquired by Entrust).

Vadim holds an MS in Computer Science from Stanford University and loves broadway shows and playing ultimate frisbee.

Dr. Jason Paruthi

Medical Director

An entrepreneur and scientist, Jason Paruthi, MD is passionate about translating medical science into practices accessible to patients. Prior to Lark, Jason worked in Life Science strategy consulting for pharma/biotech, medical device and healthcare technology companies. He also co-founded Pangea Nutrition, which provides meals and nutrition education programs for the prevention and management of diabetes, obesity, and cardiovascular disease. Jason received his BA and MD from Boston University and is a former trainee and translational research fellow at Harvard Medical School. Outside of work, Jason enjoys trying out new healthy, spicy recipes.

Our Health Committee


Science has proven the superior benefits of “holistic” behavioral coaching- not just treating the disease, but strengthening the mental and physical aspects as well. Meet the world-class group of health and behavior change experts from Harvard, Stanford, the NBA, and more, who are bringing the best personal 24/7 coaching to everyone’s fingertips. 

Dr. Baba Shiv

Neuroeconomics-Behavior Change | Stanford University Professor

Natalie Stein

Exercise, Fitness & Nutrition Expert | Assistant Professor of Public Health

Dr. Jo Solet

Cognitive Behavior Therapy & Medicine | Harvard Medical School Professor

Dr. Cheri Mah

NFL, NBA, and Olympic Coach | Sleep Expert

Judy Caplan

Dietitian | Founder of Nutrition Ammunition

Hyungsoo Kim

Human Body Clock Expert

Heather Milton

Cardiopulmonary Specialist | Exercise Physiologist & Performance Coach at NYU Medical Center

Stephanie Hilliard

Stanford Persuasive Lab

Chris Long

Health Plans Executive | COO, Staywell; Former CEO of AxisPoint Health

Paul Zhang

Pharma Executive | Managing Director, Navigant

Itai Vonshak

Behavior Change Design | VP Intel, LG, HP

Cora Tellez

Former CEO Health Net

Come Work With Us!

If you want to tackle one of society’s biggest problems with an inspired team, we’d love to hear from you. Apply below, or send us a note.

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