We are passionate about providing scalable virtual care.

Julia Hu CEO, Co-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, Co-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.

Anita Nair-Hartman Chief Strategy Officer

With a passion for making healthcare work better for everyone, Anita has dedicated over 29 years helping organizations bring data, insights and innovation to key stakeholders to improve care. Prior to joining Lark, she led Payer & Provider Strategy at IBM Watson Health after their 2016 acquisition of Truven Health where she was Senior Vice President of Strategy and Business Operations. Earlier in her career, she also worked at Medecision, Aetna and Watson Wyatt. Anita earned a Master of Health Administration and a Bachelor of Science in Biology from The Pennsylvania State University.

Mitchel Harad Vice President, Consumer Marketing

With over 20 years of consumer marketing experience, Mitchel has a track record of driving growth at scale. Most notably, he acquired over 1 million customers at consumer lender Lending Club, driving over 30X growth and helping to position the company for the largest U.S. IPO of 2015. He has also led 5X - 10X growth as the marketing leader at alternative lender SocietyOne, Aussie Pet Insurance, and auto insurer MetroMile.

Susan Singer Vice President, Technology Operations

Susan is an experienced executive leader with a demonstrated history of success at optimizing the performance of product strategy and development, business operations, and stakeholder communications. Prior to joining Lark, she was VP of Strategic Initiatives at Rally Health, helping the company grow and scale product delivery, as it transformed from a 40-employee startup into an organization of over 1,800 employees and was acquired by Unitedhealth Group. Before that, she worked at Linden Lab (the creators of the pioneering virtual world platform Second Life), the Corporate Executive Board, as well as founded a boutique consulting firm focused on helping companies identify needs, develop project plans, and manage processes for web-based solutions delivery. Susan earned her MBA from the Darden School of Business at the University of Virginia and a BA in Cognitive Science from Wellesley College.

Melissa Ross Vice President, Strategic Operations

Melissa's career of more than 25 years has been dedicated to driving scale and growth for leading companies at the intersection of healthcare and technology. Prior to joining Lark, she advised early stage healthcare technology companies, served as Chief Operating Officer of VisiQuate (a healthcare revenue cycle analytics and workflow company), and co-founded BRIIA.io (an accelerator program for AI startups). Earlier, Melissa spent more than a decade in business development, operations, client management, and engineering leadership positions at MedeAnalytics (the largest pure play healthcare analytics firm) while they scaled from small start-up to over 500 employees and were acquired by a private equity firm.

Melissa earned her Executive MBA from Saint Mary's College of California and her BA from Loyola University Maryland. Outside of Lark, Melissa loves spending time with her family, travel, and occasionally a good (bad) pun.

Andrew Reeves Chief Commercial Officer

Andrew serves as Lark’s chief commercial officer. In this role, he has responsibility for all client-facing teams across the organization. Before joining the Lark team Andrew was the chief commercial officer with BioIQ where he was instrumental during a period of significant growth for the organization. Prior to this he held a number of leadership positions at Cigna throughout a 12-year tenure including; regional vice president of national accounts, chief distribution officer for Cigna’s enterprise sales effectiveness group, chief operating officer and market manager for Cigna’s medicare advantage business.

Andrew earned a bachelor’s degree from Florida State University. He currently lives in Atlanta, Georgia. He loves spending time outside with his boys hiking, mountain biking and occasionally relaxing on his motorcycle.

Jason Paruthi, MD 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.

Hallie Higbee Vice President of Account Management

With over 15 years of experience in healthcare and employee well-being at companies like Welltok and Cigna, Hallie is an expert at understanding the needs of clients and their customers, and finding solutions that support their business objectives. Hallie has a track record of managing and developing teams of Program and Account Managers, ensuring delivery of client commitments, operational excellence and a consultative approach. Hallie has an MBA from the Haas School of Business at Berkeley.

Sharon Rapoport Vice President of Data Science & Analytics

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

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

William Beyer Chief Financial Officer

Bill has been working with Lark since 2018. He is transactionally-skilled, having negotiated and closed numerous financings and M&A deals, been a key contributor to an IPO and follow-on, and conducted commerce in over twenty countries worldwide. Previously, he served as Advising CFO of Tubi.tv resulting in an acquisition by Fox (NASDAQ: FOX), COO and CFO of Raydiance, Inc. resulting in an acquisition by Coherent, Inc. (NASDAQ: COHR) and as CFO of Bitfone Corporation where he was instrumental in its acquisition by Hewlett-Packard (NYSE: HPQ), among other venture-backed companies as CFO. Bill is a CPA (inactive) and holds a Bachelor of Science in Commerce degree in Accounting from Santa Clara University. He is a guest lecturer for the Sonoma State University School of Business and Economics and, has served on the Board of Directors for a technology company and as a Trustee for an educational institution.

Stephane Fourdrinier Vice President of Platform & Engineering

Stephane is responsible for the company’s platform and engineering teams. He joins Lark with two decades of experience leading the engineering teams and scaling companies like InVision (VP Engineering), 8x8 (VP Global Infrastructure), Tinder (Director of Engineering), PlayStation (Director of Engineering), Apple (Head of Maps Infrastructure), and Goldman Sachs (Engineering).

Stephane is a Senior Leader with extensive proven experience in systems, applications, and infrastructure engineering, spanning the whole life cycle starting from team building, to architecting, building and supporting highly scalable and highly available infrastructures and operations.

Vadim Axelrod Vice President of Partnerships & 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.

Jonathan Fielding, MD, MPH Senior Clinical Advisor

Jonathan Fielding is a Distinguished Professor of Health Policy and Management and of Pediatrics in the Schools of Public Health and Medicine at UCLA. Dr. Fielding is an expert in public health preparedness and communications.

He served as Massachusetts Commissioner of Public Health and for 16 years as Public Health Director and Health Officer for Los Angeles County. In this capacity, he was responsible for the county’s public health response to numerous infectious disease threats. He served as a founding member of the U.S. Clinical Preventive Services Task Force and, for 17 years, as Chair of the U.S. Task Force on Community Preventive Services. He chaired the Advisory Committee for the U.S. Healthy People 2020 objectives and is currently Co-Chair for the Healthy People 2030 objectives. He was appointed by President Barak Obama to the National Advisory Group on Prevention, Health Promotion and Integrative and Public Health, and is an elected member of the National Academy of Medicine.

Dr. Fielding founded the UCLA Center for Health Advancement, which models policies and programs to cost-effectively improve health and health equity and also researches waste in medical care. He is also a founder and co-director of the UCLA Center for Healthy Climate Solutions, which focuses on protecting human health from the harmful effects of climate change. He has authored or coauthored more than 300 original articles, commentaries, editorials and chapters on various aspects of public health, preventive medicine, health services, and health economics. He is the longstanding editor of the Annual Review of Public Health and currently writes a monthly opinion column on health issues for The Hill.

Dr. Fielding holds MD, MPH, and MA degrees from Harvard University and an MBA from the Wharton School, University of Pennsylvania. His honors include the UCLA Medal, the Sedgwick Medal, and the Roemer, Fries and Porter prizes, as well as honorary doctorates. The UCLA Fielding School of Public Health is named for him and his wife Karin.

Robert Gabbay, MD, PhD Senior Medical 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.