Since you say you want to be involved in the healthcare industry, I assume that your nonprofit experience has been gained outside of healthcare. Or are/were you doing fundraising for a healthcare facility, foundation, etc.? If the experience is with healthcare nonprofits, this would add to your marketability.
Look at the hard and soft skills you have developed, of which some would likely be in the areas of teaching, communication, PR, presentation, sales, motivation, organization, marketing, budgeting, people-management.
Based on these, some areas that you may want to consider are: