Ms. Stemmler leads IT, applications, cybersecurity and digital teams at Adventist Health. She’s currently spearheading one of the most ambitious projects in the system’s history, which is the Epic EHR implementation transitioning 27 hospitals and 400 clinics from Cerner to Epic in a single “big-bang” go-live, including leveraging Apple-Epic mobility tools to empower caregivers with real-time clinical data. Ms. Stemmler authored Adventist Health’s first “Consumer & Innovation Playbook,” a cornerstone in transforming the health and wellbeing journeys for patients, and previously led the transition of more than 280 ambulatory clinics from disparate systems and paper processes to Cerner Ambulatory. Under her leadership, Adventist Health Bill Pay now supports more than 229,000 registered users with 71% of payments made online, and enhancements including live chat and MagicLink text reminders drove 16,000 new registrations and a 10% increase in online payment activity in 2025. Adventist Health earned the College of Healthcare Information Management Executives “Most Wired” level 8 recognition.
