Guide to Patient Portal Patient Portal Log In. Contact Us Cape Cod Dermatology, LLC 134 Ansel Hallet Road West Yarmouth, MA 02673 To get in touch with us, give us a call at (508) 771-9779 Fax: 508-771-4355. West Yarmouth Hours of Operation Our Regular Schedule. Monday: 8:00 am-5:00 pm..