Ostro

Based in Florida, US, Rise Healthcare Tech, Inc. doing business as Ostro, formerly known as RxDefine, provides a platform that creates personalized healthcare journeys. The company was co-founded by Chase Feiger (CEO as of 2026), Ahmed Elsayyad, and Ryan Junee. In March 2026, Veeva Systems acquired Ostro from Havas Ventures, Byers Capital, Bling Capital, Trust Ventures, Caffeinated Capital, Founders Fund, Greycroft, and RRE Ventures for USD 100 million.

The company offers an Ostro platform that consists of Ostro navigate and helps in finding better treatment, and Ostro attribute which is an analytics product that connects brand marketing campaigns to clinical outcomes. Additionally, it provides Ostro consult which is a telehealth connection that connects patients with experienced and qualified clinicians. Furthermore, it provides a solution to pharmaceutical companies, medical devices, digital therapeutic companies, and diagnostic tool companies. The acquisition enables Ostro to scale its platform through a broader pharma customer base and integrate its technology into a larger ecosystem for greater reach and impact.