Company leader
Guillaume Castel
Chief Executive Officer
PerfectServe
Castel leads PerfectServe's clinical communications and scheduling platform used by hospitals replacing pager-era workflows.
Guillaume Castel is chief executive of PerfectServe, a clinical communications company serving hospitals and health systems.
He has led the company since 2019, including the period when PerfectServe publicly described crossing about $100M in contracted annual recurring revenue and serving more than a million platform users.
Public commentary frames the product around speed to care across secure messaging, physician scheduling, and care-team orchestration rather than patient marketing SMS.