Doctor Villareal is a General and Laparoscopic Surgeon. He is a Diplomate of the Philippine Board of Surgery and an Associate of the Philippine Association of Laparoscopic and Endoscopic Surgeons. He finished his Residency Training at the Department of Surgery of Jose R. Reyes Memorial Medical Center, in Manila. He is Medical Specialist II – General Surgeon of Dr. Ricardo Y. Ladrido Memorial Hospital and an Active Consultant of the Department of Surgery of Medicus Medical Center.