Halland Chen

Dr. Halland Chen is a double board-certified physician specializing in longevity medicine, cellular health, and biotech innovation, and the founder of Cell Theory, a science-driven supplement brand focused on optimizing cellular health and longevity. Featured on HBO, Forbes, and Elle for his expertise in NAD metabolism, stem cells, and cellular medicine, he combines advanced diagnostics and personalized concierge care to help high performers optimize recovery, reduce inflammation, and extend their healthspan. He also serves as the longevity physician for Paris Hilton.