Empowering individuals to live their healthiest lives by unlocking their unique biology.

About Us

At DayTwo we are utilizing the possibilities of the gut microbiome to unlock the power within each individual. By harnessing this biological intelligence, we can provide people with actionable insights into chronic disease care.

Our Story

DayTwo is a microbiome-based precision health company committed to creating individualized solutions for the epidemic of chronic conditions, starting with diabetes, prediabetes, and clinical obesity. Using the highest resolution microbiome analysis available and a unique artificial intelligence-based algorithm, DayTwo can accurately predict blood sugar response to foods or food combinations– before people even take a bite. Our clinically proven approach is based on our proprietary microbiome dataset. With over 85,000 samples, it is one of the largest and richest in the world. But how did we get here?

In 2015, founding scientists Eran Elinav and Eran Segal of the Weizmann Institute were concerned by the epidemic of metabolic diseases (like type 2 diabetes) sweeping the globe. Determined to get to the root of the issue, they set out to learn which diet was best for humans. They undertook the largest clinical trial study of its kind, exploring which factors (including gut bacteria)  impacted people’s blood sugar responses to food. What they discovered next has changed the lives of thousands. First, each person’s gut microbiome is as unique as their fingerprint, and this plays a key role in mediating blood sugar response. Second...

Take a deeper dive...

2002

Scientists Eran Segal and Eran Elinav became obsessed with finding out which diet would help slow the epidemic of metabolic disease.

more

2002

Scientists Eran Segal and Eran Elinav became obsessed with finding out which diet would help slow the epidemic of metabolic disease.

more

2002

Scientists Eran Segal and Eran Elinav became obsessed with finding out which diet would help slow the epidemic of metabolic disease.

more

2002

Scientists Eran Segal and Eran Elinav became obsessed with finding out which diet would help slow the epidemic of metabolic disease.

more

2002

Scientists Eran Segal and Eran Elinav became obsessed with finding out which diet would help slow the epidemic of metabolic disease.

more

2002

Scientists Eran Segal and Eran Elinav became obsessed with finding out which diet would help slow the epidemic of metabolic disease.

more

DayTwo Team

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson is Chief Executive Officer of DayTwo. Dave was a founding executive member of Oscar Health (NYSE: OSCR) and was the founder and CEO of Kayden Health, an online opioid addiction treatment solution. Dave has held leadership roles at Cigna and EmblemHealth.

Shaul Sharoni

CFO

Shaul Sharoni

CFO

Shaul brings over 20 years of leadership roles in finance and operations, driven by a desire to improve processes and outcomes. with a record of leading teams to over-achieve goals in a highly competitive medical device arena. Applies strategic, consultative, and solution tactics while changing business approaches. Skilled at building and leading fund-raising rounds (incl. IPO on TASE). Strong track record of success in leading and growing the accounting and finance functions.

CJ Mark

Chief Revenue Officer

CJ Mark

Chief Revenue Officer

CJ Mark brings extensive experience from working in healthcare, employee benefits, and digital health. She brings a deep industry perspective to her role, having led teams within the digital health, healthcare consulting, the payor and provider space. CJ has built go-to-market strategies and successfully commercialized organizations overseeing Marketing, Sales, Client Success and Commercial Operations.

Nick Altebrando

VP of Product

Nick Altebrando

VP of Product

Nick Altebrando has over 20 years of experience in healthcare technology. His most recent work in telehealth, digital therapeutics and AI-driven medical devices has focused on optimizing patient engagement and clinical quality. Nick’s previous roles include Head of Product at Eko Health, VP Product Strategy at AbleTo and VP of Product Innovation at WebMD.

Aamir Rehman

Chief Medical Officer

Aamir Rehman

Chief Medical Officer

Aamir has over 23 years of healthcare industry experience as a physician executive. He has served in senior management and executive roles directly for major stakeholders in almost every vertical of the healthcare industry including payers, providers and employers. He has also worked for pharmaceuticals and PBM clients in his role as a consultant. Starting his consulting career at Oliver Wyman, he served as a clinical SME for healthcare clients as well as an analyst on business design for clients outside of healthcare. During his tenure at the Advisory Board Company, he was a Partner/ Principal at the firm and served in a number of roles, including as the first head of the Physician Leadership Academy and leading the H-Works consulting division. Aamir also has hands on corporate experience, having worked as Executive Vice-President and Chief Strategy Officer of Saint Peter’s Healthcare System and then as Vice-President of Healthcare Delivery Transformation and Chief Clinical Integration Officer at VHA SE (now Vizient). Aamir’s payer experience includes working for Fortune 50 companies and unions (through start-up Renaissance Health), serving as a Partner and Chief of Clinical Services for North America for Mercer – where his responsibilities included advising large employer clients on their clinical and digital health strategy – and as SVP of Clinical Innovation at Consortium Health Plans (a Blue Cross Blue Shield company focused on National Accounts).

Adi Lev

VP of R&D

Adi Lev

VP of R&D

Adi brings 20 years of experience in the worlds of Software Development and expertise in the domain of Data Analytics, from enterprise (Intel) and leading mid size companies (Optimal plus, Cellebrite) to top innovative startups (RapidAPI).

Amir Golan

Chief of Business Development
& Strategic Partnerships

Amir Golan

Chief of Business Development & Strategic Partnerships

Amir oversees DayTwo’s commercial activity in international markets.

Ashley Burgio

Chief of Staff

Ashley Burgio

Chief of Staff

Prior to this role, Ashley was Solution Director and Strategy Lead for Leidos Health, where she identified and matured innovative concepts and technologies to drive growth. She’s held leadership roles within various health systems, such as Baylor College of Medicine, Universal Health Services, and Jefferson Health.

Directors

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Scientific

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Clinical

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Dave Henderson

CEO

Life at DayTwo

We are a team of passionate and ambitious innovators that span the globe with a shared vision of improving chronic disease care through microbiome science, AI, and dedicated support . We are a science-first, outcomes-based company.

Value-based work leads to value-based care.

Lead With Science

Being clinically accurate is vital to the health of our members and trust of our clients.
We think like scientists by employing rigor to achieve excellence  while staying open to a horizon of possibilities.

Empower Individuals

We empower people to be the hero in their own story by equipping them with unique biological insights and supporting their long term growth.
We empower each other with the right tools and environment to do our best work. We show gratitude for each other's contributions!

Be Proactive, Not Reactive

We provide proactive solutions, whether predicting individual blood sugar response or developing the next application for our science.
With an eye to the future, we strive to stay one step ahead, driven by the knowledge that our work can change people’s lives.

Build With Empathy

We put humanity back in healthcare, using empathy to build trust and make health goals feel approachable and achievable.
Through honest and empathetic communication, we build trust and help each other thrive.

Learn About Careers

Join our team

We're always looking for passionate and talented individuals who are looking for a mission driven company.