Our mission is to help millions back to good mental health

Our story

The idea for Big Health was born when co-founder Peter Hames had trouble getting anything other than medication for his insomnia. He discovered Dr. Colin Espie’s book on cognitive behavioral therapy (CBT) for insomnia, and realized what had worked for him could work for millions. Dr. Espie then became Peter’s co-founder, and together they created Big Health and its mission: to help millions back to good mental health.

Peter Hames & Colin Espie, together at Big Health's offices in San Francisco, CA.
Illustration depicting a progress graph from Sleepio on an iPad.

Today, we’re charting the future of digital medicine. We combine leading clinical insight with the best in design and technology to provide a scalable approach that’s accessible to all — including communities traditionally underserved by mental health care. And we’re doing it with the backing of industry-leading peer-reviewed research and randomized controlled trials.


Our digital therapeutics have been recognized by some of the nation’s leading authorities in digital health, software innovation, mental health, and employee benefits.

Future Digital Award Winner

Best Therapeutic Software Solution (Platinum)
Best Mental Health Therapeutic Solution (Gold)

MedTech Breakthrough Award Winner

Best Overall Mental Health Solution

UCSF Digital Health Award Finalist, 2020

Best Mental & Behavioral Health Company (Finalist)


Headshot of Peter Hames, CEO and Co-Founder of Big Health

Peter Hames

Co-Founder and Chief Executive Officer
Headshot for Colin Espie, Co-Founder and Chief Scientist

Colin Espie, Ph.D

Co-Founder and Chief Scientist
Headshot of Dr. Jenna Carl

Jenna Carl

Chief Medical Officer

Kelvin Kwong

Chief Product Officer
Headshot of Karlie Jessop

Karlie Jessop

Vice President, Sales


Arun Gupta

Executive Chairman

Sir Bruce Keogh

Chair Birmingham Women’s and Children’s NHS FT; Former National Medical Director, NHS England

Ellen Horne

Advisor; Voice of Daylight

Casey Leonetti


Guy Eiferman

Former Pharmaceutical Executive; Partner at Nextep-Health

Judy Verhave

CEO, Next Chapter Solutions, LLC; Former Chair, Business Group on Health


Join us in helping millions back to good mental health