This document discusses the promise and challenges of digital health startups in India. It notes that while startups like Practo have received funding, there have not been major success stories that have generated significant returns for investors or meaningfully improved patient care. It identifies some common reasons why health tech startups often fail, such as focusing on solving problems without doctor input or understanding clinical needs. The document advocates for more collaboration between doctors and engineers/entrepreneurs, and proposes models like medical innovation centers located in hospitals to facilitate this. It also discusses the roles doctors can play in digital health as angel investors, entrepreneurs, and customers of startups.