If you wish to file a complaint, please review How to Choose the Right Physician - How to Tell Us if You Don't before printing and filling out a complaint form. 1) The Defendant may ask the Plaintiff to agree to the extension.When filing a complaint about a physician, you must mail your written letter or completed complaint form to the New York State Department of Health. One of our Patient Advocates: (516) 632-3414; Our Performance Improvement Department: (516) 632-3890; The New York State Department of Health:. You may appear personally, with or without your attorney or other representative. If you are not satisfied with the hospital's response, you can complain to the New York State Health Department. Our patient representatives are available Monday through Friday from 9 am to 5 pm and can be reached at 212-659-8990. The patient advocates at Nassau University Medical Center are here to help you resolve issues with your care. Students in surgery SHARPEN YOUR SKILLS. Nassau's Surgical Technology program is one of our most popular programs — for good reason.