Be creative: what drew you to the company or position? The purpose of this letter is to inform counties of the Centers for Medicare and Medicaid.I am a first-year law student at Harvard Law School and am writing to apply for a volunteer summer internship at your office. Find out who's eligible for Medi-Cal, how to apply, and answers to other commonly asked questions. Four (4) years of experience as a journey-level Lineworker with at least one year of the above experience must be with the City of Santa Clara.