Almost everything health care related I see that has been funded on Crunchbase is by VC firms. I've also looked on Funded and Angel list.
Start by triangulating all of your prospects (via Crunchbase, Angel List, and LinkedIn) with those angel and VC firms located in cities that do a lot of investing in the healthcare sector—e.g., San Francisco, Boulder, Nashville. Then, start connecting with founders/executives of those firms' portfolio companies and ask for intros.
There are 3-5 healthcare specific crowdfunding platforms - I would start there.