
A physician left the ward, learned the machinery of growth, and found his company in healthcare's overlooked doorway. Now Sohar Health is turning insurance verification from a waiting game into infrastructure.

The aerospace engineer turned API founder has built Junction by treating healthcare's least glamorous integrations as an engineering problem worth obsessing over.
Anshul Rathi is the founder and CEO of CertifyOS (Certify), a New York-based healthcare provider data platform that credentials clinicians in under two minutes using six data elements instead of 40-page forms. An engineer by training, he spent roughly six years as one of Oscar Health's earliest employees building its provider network and data infrastructure before leaving to attack the same problem industry-wide. CertifyOS takes an API-first, data-first, automation-first approach to making provider data a single source of truth across U.S. healthcare. The company raised a $40M Series B in June 2025, bringing total funding to about $69M.