›Portfolio Companies

Past, Present and Future Leaders

InterWest is proud and privileged to partner with visionary management teams who are shaping the future of Information Technology and Healthcare. The companies they have started are vital parts of the portfolio of industry-leading startups that InterWest has helped over the last four decades.

Our Companies

Early stage IT and Healthcare Investing

Early Stage IT & Healthcare Investing

Information Technology


Dan Siroker
Lonnie Moulder, TESARO
Lee Hood
Jim McCollum
Jeff Tangney


Phil Fernandez

"We are very pleased to have InterWest Partners as allies in the delivery of our vision for a new kind of marketing automation solution. This funding has enabled us to rapidly deliver innovative solutions for lead generation, lead nurturing, and marketing accountability."

Phil Fernandez, President and CEO, Marketo


Dan Siroker

"The vision for Optimizely is to enable businesses to show exactly the right thing to the right person at the right time. We are glad to have InterWest as partners along our journey to bring that vision to fruition."

Dan Siroker, CEO, Optimizely


"At Joyus we are passionate about creating the first true convergence of content and commerce in a premium video shopping experience. With IW we found complete synergy with a vision that we can build a world class media and shopping destination in one for the digital consumer."

Sukhinder Singh, Founder & Chairman, Joyus


Julie Wainwright, CEO The RealReal

"The RealReal is building the world's largest trusted marketplace for luxury consignment for women and men's fashion, fine jewelry and watches and art. Working with Keval is like have a strategic machine in your midst. He is focused, he is innovative, he is in it to win it and he is fun. "

Julie Wainwright, Founder & CEO, TheRealReal


Lee Hood

"At Integrated Diagnostics, we have a really big dream: to make the way the world practices medicine more precise and more predictable. InterWest is the right partner for us because they take a long view on Life Sciences opportunities and have enormous experience in the field."

Lee Hood, Co-Founder & Board Member, Integrated Diagnostics


Jim McCollum

"We’re revolutionizing human hair transplantation using sophisticated robotics and we needed a patient investment partner with a solid track record in medical devices—so we turned to InterWest. Their ability to maintain their interest and commitment over time has been crucial to our progress."

Jim McCollum, President and CEO, Restoration Robotics


Jeff Tangney

"We make physicians more productive and successful by connecting them online—a tricky task that requires an understanding of health care, technology and regulations. With InterWest, we found solid partners with investment, health care and technology expertise under one roof."

Jeff Tangney, CEO, Doximity


Lonnie Moulder, TESARO

"TESARO unearths and passionately pursues the development of biopharmaceuticals that can make a difference in the lives of cancer patients. InterWest’s deep understanding of science and development, along with their investment style, compelled us to partner with them as a foundational investor. "

Lonnie Moulder, CEO & Co-Founder, TESARO