Cyrus Massoumi

CEO & Founder at Dr. B

Dr. B is the brainchild of Cyrus Massoumi, an entrepreneur and investor whose mission to make access to healthcare more efficient and equitable. Cyrus is the founder and former CEO of ZocDoc and member of the Board of Advisors of Columbia University's Mailman School of Public Health. Cyrus is also the founder of humbition, a venture capital firm, and Shadow, the app that uses AI and the power of community to reunite lost pets with their families.



  • CEO & Founder

    Current role