You are way too early to think of co-founders yet. What you need to do is to validate your potential market first and see if there is any interest. This will not be easy. It cannot be automated in the beginning. Not to mention that Healthcare and Medicine is a real beast to tackle due to the red tape and regulations that you will have to deal with.
My advice: forget co-founder and find someone well connected in the Healthcare/Medicine industry. Or directly approach your target clients. I am guessing they could be Doctors, Hospitals, Clinics ? Use the initial contact to learn and understand the problems that you think you could solve with your software. Start there.
Thank you for your insight! You are correct about target clients.