Define your verticals of interest
Focus on 2-3 verticals, which may include medical devices, hospital administration, biotech, international aid agencies, medical group management, health insurance, etc.
Stay up-to-date with the news
Especially with changes in healthcare policy, the way services are provided may change. Set up Google Alerts for healthcare (and your companies of interest in particular).
Review common questions
Despite the functional role you’re applying for, here are some healthcare administration questions that may be helpful to prepare for – https://www.interviewstrategies.com/healthcare-administrator-interview-questions/