Dr. Margot Hartmann, president & CEO of Nantucket Cottage Hospital since 2010, has announced her retirement plans in a letter posted on the hospital’s website. Hartmann said the search for her replacement will begin shortly, is expected to take several months, and once a new CEO is found, Hartmann will remain as president of the hospital through the summer of 2019. Hartmann has overseen the process of building a new hospital, which is expected to open by the end of 2018. She said of the transition plan, “This will be about an 18-month process to bring us safely into our exciting new building and through the completion of our historic capital campaign.”