Meet the Team

Our Leadership

Driven by a passion for innovating technologies that make a meaningful impact on unmet medical needs.

Ritter_Andrew1@2x

Andrew J. Ritter

Chief Executive Officer

Zigaretti_Gabe@2x

Gabe Zingaretti

Chief Operating Officer

Andrew_Ninh@2x

Andrew Ninh

Chief Strategic Officer,
Co-Founder

Karnes_William@2x

William Karnes, M.D.

Chief Medical Officer,
Co-Founder

Docbot-Headshot-Bryan-2-Indoor-Web

Bryan Chan

VP of Engineering

Dao_Tyler@2x

Tyler Dao

Chief Architect,
Co-Founder

Requa_James1@2x

James Requa

Head of AI

Samarasena_Jason2@2x

Jason Samarasena, M.D.

GI Advisor,
Co-Founder

Our Story

Docbot was born from a mission to provide the most powerful AI-assisted image analysis solutions to revolutionize GI care. In 2013, co-founders Andrew Ninh, Tyler Dao, and Dr. William Karnes (leading gastroenterologist at University of California Irvine) teamed up to create a web interface for Dr. Karnes’ large polyp/colonoscopy quality database that he had painstakingly collected over a 10-year period.

Ninh’s background in bioinformatics and natural language processing led them to believe they could leverage the data to generate artificial intelligence algorithms to automate the detection of polyps and other lesions and report colonoscopy quality. The result was the UltivisionAI™ Platform. The team officially launched the company in 2016 and raised its Seed Round in 2019 through the prestigious Y Combinator accelerator program.

Our Board of Directors

Peter Crosby

Former CEO of 6 medical device
companies in four countries
Executive Chairman

Andrew J. Ritter

Chief Executive Officer,
Docbot

Andrew Ninh

Chief Strategic Officer,
Co-Founder, Docbot

Will Borthwick

Principal, BOLD
Capital Partners

Alex Morgan M.D., Ph.D.

Partner, Khosla Ventures
Board Observer

Guy Vidra

Partner,
Collaborative Fund

Our Medical Advisors

Tyler Berzin@2x

Tyler Berzin, M.D.

Associate Professor of Medicine at Harvard Medical School and Director of the Advanced Endoscopy Fellowship Training Program at Beth Israel Deaconess Medical Center

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Seth Gross, M.D.

Clinical Chief of Gastroenterology and Hepatology at NYU Langone Health

Stephen Hanauer3@2x

Stephen Hanauer, M.D.

Professor of Medicine-Gastroenterology and Hepatology at Northwestern Medical and Chair of the International Organization for Inflammatory Bowel Disease

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John Hong, M.D.

CEO and Founder of United Medical Doctors

David-A-Johnson

David A. Johnson, M.D.

Professor of Medicine and Chief of Gastroenterology at the Eastern Virginia School of Medicine in Norfolk. Past President of the American College of Gastroenterology

John Vargo1@2x

John Vargo, M.D.

Chief of Gastroenterology at Cleveland Clinic and past President of American Society for Gastrointestinal Endoscopy

Our Investors

Our Partners

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