Probably. You are entitled to all your medical records. But your doctors may not retain all correspondence in an easily accessible manner. Most doctors these days are overworked, and the question may be how much time they or their staff would have available to respond to a request if the correspondence is not already a part of your medical records.
Harry S. Margolis practices elder law, estate, and special needs planning in Boston and Wellesley, Massachusetts. He is the founder of ElderLawAnswers.com and answers consumer questions about estate planning issues here and at AskHarry.info.