Our company

At Ostro, our mission is to help millions of people live healthier lives by being the missing, caring link between those who make medicines, treatments, and diagnostics, and those who take them.


Ostro was born out of a passion to empower consumers and healthcare providers (HCPs) to decide when they get information, control how they get information, and understand what actions they can take based on that information. The Ostro platform was built to transform that passion into a reality, and it continues to be the driving force behind the Ostro products, people, and purpose.

The founders

Chase Feiger, MD, Ahmed Elsayyad, and Ryan Junee founded Ostro (formerly RxDefine) in 2019 to make it easier for people to find and access the medical treatment that was right for them.

With backgrounds at the intersection of venture capital, healthcare, and fast-growth technology, they knew they had a unique skillset to disrupt the life sciences industry and make a profound difference in people’s lives.

The team

The members of our team come from top global brands, and they’ve landed at Ostro because they’re as passionate about our mission as our founders.


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Where we’ve worked:

“Ostro is a company that values people and champions diversity. This culture contributes to how we embrace our vision and our values both internally and with our customers.”

Patrick Goldate
Head of Implementation

“At Ostro, we are continually pushing the envelope to connect people, information, and services. I love working with my teammates to make this mission a reality.”

Mike Goulart
Director of Commercial Strategy

“I knew this company would be a wonderful place to work during the interview process because of the way they promote authenticity and impact. I am excited to be part of a company that will further support my professional and personal growth in such a meaningful way.”

Danielle Hay
Principal, Operations & Strategy