Hello Aspirant,

These are some courses

• Coursera — Health Informatics  by J.H University
• It is the most popular course.
• Coursera —  Data Science of Health Informatics by J.H University
• Easy to understand.
• Coursera — Healthcare IT Support Subject by J.H University
• Best for today's healthcare.
• Udemy — IT Technology: Health Information Systems
• This will be satisfactory as it is beginner-friendly.
• Udemy — CompTIA Healthcare IT
• Student-friendly course.
• Udemy — Electronic Healthcare Records, Plain and Simple
• Cheap course.

I hope it helps.

Thank you.