Keywords: Advanced Search Directory View All Listings Ferrer, MD, Guillermo E. Provider Name Ferrer, MD, Guillermo E. (County) , Primary Specialty (Tompkins), Gen./Thoracic/Vasc. Surgery Group Drs. Ferrer & Monaghan Physicians, LLP Street 8 Brentwood Dr. Ste. AIthaca, NY 14850 Phone (607) 257-2116 Fax (607) 257-0315 Board Certified Yes Gender Male Medical School University of Zulia Degree Date 1980