IMPROVING UI means there problem has been already solved (UI already exists), knowing the medical industry it means there are multi-million/billion dollar companies you're going to compete against which have dozens of engineers working on improving their existing software. AI integrations... say what? "let me introduce <buzzword of the week> into something and make quadrillions". I wish you all the best, but get to know the industry and see if odds are in your favor. Developing any medical software requires deep knowledge of the field and subject, robustness, years of in-practice testing, experience and government approvals, certifications, compliance with standards etc.
To set up a medical software company you need medical professional license (as few sources state). Which also solidifies my belief you haven't done the most fundamental research.
Those are big boy things, done by a team of computer scientists, not a single developer.
Yeah... that's an obvious one. I don't feel like explaining...
Have I fallen for a bait? If not, i wish the best of luck to you.