Spruce Health is an all-in-one, HIPAA-compliant communication platform built for healthcare practices. It rolls calls, voicemails, texts, secure messages, fax, video visits and team chat into a single inbox so clinicians can talk to patients - and to each other - without juggling six different apps.
David Craig, MD is the CEO of Spruce Health, a San Francisco-based HIPAA-compliant healthcare communication platform serving 25,000+ healthcare providers. A Stanford-trained emergency medicine physician who began coding in his teens, Craig brings rare dual fluency in medicine and software engineering. He joined Spruce in 2014 as Chief Medical Officer before taking the CEO role in late 2021, and still works weekly ER shifts to keep his clinical perspective sharp while leading a team building the communication infrastructure for modern healthcare.
Trevor Perrin is an applied cryptographer who co-created the Signal Protocol with Moxie Marlinspike - the encryption backbone now protecting conversations for over a billion people across Signal, WhatsApp, and beyond. He also designed the Noise Protocol Framework, a foundational cryptographic framework deployed in WireGuard, WhatsApp's client-server layer, and the Lightning Network. A 2017 Levchin Prize winner, Perrin works as an independent consultant on quantum readiness and cryptographic systems design.