Congratulations on finishing your degree. The fact that you have extensive employment experience with a recognized financial firm is a plus. Often, individuals graduate with no full-time paid experience so they are challenged in developing a resume that will distinguish them from the many other new grads who also have not worked. Career Management 101 on ache.org has a module that considers how to develop and use cover letters and resumes. I urge you to give it some attention. What should work to your advantage will be the accomplishments you can list that demonstrate how you have contributed to your employer's success and, hopefully, how you advanced in your time working there. Any internships or practicum or case studies that placed you in live, operating healthcare organizations during your studies deserve mention also as they demonstrate that you are not a stranger to the environment where you seek to work.
Equally important will be creating a grammatically perfect document that looks and reads as professionally prepared as would a document from a recognized investment firm. You may have dashed off your message board posting, but you cannot afford to be so casual in any correspondence or with any document that represents you in your job search.
Finally, I hope you are just being loose in your writing when you say “...on my resume to attract any healthcare organization." That sounds somewhat passive. Landing your first job in a new sector will take concerted effort by you to be reaching out in person as you network rather than just posting to a resume board or by mailing blind “To whom it may concern” at some organization.