Lemma Health
Personal Health Experiments

Building precision health intelligence from your own data — not population averages — starting with chronic conditions.

Our Mission

Our mission is to build the next generation of medical AI — precision health intelligence that learns from each person's own data instead of population averages. We start with gathering longitudinal data from the app, specifically for chronic conditions, to prove that we can get the data we need to build this future.

Our Core Values

Patient Choice

You decide what to try. The data is yours, the choices are yours, and the patterns Lemma surfaces belong to you. Nothing leaves your control unless you say so.

Personalization

What works on average rarely works for you — and that gap is the entire reason we exist. Every insight, every recommendation, and the medical AI we are building start from your data, not the population's.

Objective

We do not chase headlines and we do not pretend to know more than we do. We combine trusted medical research, patient experiences, and your own logs — and we say “probably helping” instead of “this fixes it,” because the second one is a lie.

Meet Our Team

Josh Scherbenski

Josh Scherbenski

Founder & CEO

Josh is a father of two children with eczema. With 15 years of experience in data science, machine learning, and AI for startups, he is on a mission with Lemma Health to leverage the latest data and research to help his children's condition. Prior to his life in startups, he was a NASA engineer and program manager.

Advisors

Dr. Regina-Celeste Ahmad

Dr. Regina-Celeste Ahmad

Pediatric-Dermatologist

Dr. Regina-Celeste Ahmad is a board-certified pediatric dermatologist with a passion for helping children with eczema and other skin conditions. She directs dermatology education for the pediatric residency program at UCSF Benioff Children's Hospital Oakland.

Dr. Anna Emanuel

Dr. Anna Emanuel

Medical Advisor

Dr. Emanuel is a double board-certified physician specializing in Integrative and Functional Medicine. She is passionate about helping patients uncover the root causes of their chronic conditions and achieve lasting well-being. As an advisor to Lemma Health, she brings her clinical expertise and leadership experience from top integrative clinics to help design patient-centered solutions that bridge traditional and innovative care approaches.

Sevda Mikdadi

Sevda Mikdadi

Healthcare Strategy Advisor

Sevda Mikdadi is the founding partner of VIP Global Care, a firm dedicated to helping patients access world-class care and navigate complex diagnoses with confidence and dignity. With over a decade of experience across the U.S., UAE, and UK, she brings deep expertise in patient navigation, care coordination, and healthcare strategy.