Dear Ms. Morrison,
With reference to your advertisement on www.indeed.com, I write to apply for your position of Healthcare Assistant for Johns Hopkins Hospital.
I have been working in the healthcare field for the past five years, and have completed my applicable degree with honors. My present role of Junior Health Assistant has well equipped me with the experience and hands on capability to progress to the role of Healthcare Assistant at your hospital. Please find my enclosed resume with personal recommendations from my supervisors.
Thank you for reviewing this letter and resume. Please call me at (555)-555-5555 at your earliest convenience.
Resume Attached as MS Word Document