For folks running healthcare practices -- do you use credit cards?

I'm looking into a startup idea to build a corporate credit care for healthcare providers. I'm starting broad (I realized "healthcare providers" is quite broad) with the thesis that the there could be significantly better customized CC offerings for healthcare providers. Is there anyone who runs a healthcare practice (any type, dentistry, ASC, optometry, etc.) that would be willing to either a) take a short survey or b) jump on a quick call with me to help me better understand how you think about payment tools?