Zach Rosen, Angel Investor

Zach Rosen is co-founder and CEO of Brellium, a healthcare AI compliance platform launched in 2021. Brellium helps provider groups ensure every patient visit meets clinical and payor standards, backed by funding from First Round Capital, Left Lane Capital, and Menlo Ventures. Previously, Rosen co-founded Sapien, serving major health systems such as Henry Ford Health and USC Keck School of Medicine, and worked as an investment banker at Moelis & Company. His career spans healthcare technology, compliance innovation, and financial services, with a focus on building AI-powered solutions that improve provider efficiency and patient outcomes. As an angel investor, Rosen has supported Grata Health, a pre-seed stage company, backing its efforts to innovate in healthcare technology and patient engagement.