Welcome to the practice of Dr. Muhammad A. Wattoo, MD, FACP. Muhammad A. Wattoo, MD, FACP. Internal Medicine of Ithaca, PC. 607.257.3452. Home. Established Patients. Patient Info. Billing & Financial Policy. ... About Patient Portal. Patient Portal FAQs. WELCOME to Dr. Wattoo's Practice! We are accepting new patients! Click here to learn more.