Sheridan Medical Group. 1491 Sheridan Drive, Suite 100 Tonawanda, NY 14217 Phone: 716-332-4476 Fax: 716-447-1286. Phone: 716-332-4476 | Fax: 716-447-1286 Patient Portal. ... Please visit us on your Patient Portal or call us by phone if you are not feeling well. Comments / Feedback. If you have comments or feedback, please click the button below ....