Mendelssohn Manalaysay is the Dental Department Head of the Medical City, SM North Edsa Annex, Mall of Asia and SM Pampanga. He is the proprietor of Manalaysay Dental Implant and Surgery Clinic and Manalaysay Dental Clinic. He is also Consultant of Smile Make Over Clinic in Angeles, Pampanga. He serves as the training Director of Centro Escolar University Dental Alumni Association in Basic Oral Surgery and Dental Implantology Training and Adventist Medical Center, Manila Hospital Dentistry and Dental Implantology Training. He is also faculty member of Centro Escolar University Makati and Malolos College of Dentistry.
Some of his affiliations are-: Specialist in Oral and Maxillofacial Surgery granted by the Board of OMS of the professional Regulations Commission; member of the Board of Examiner of the Philippine College of Oral and Maxillofacial Surgeons; Fellow and Past President, Philippine College of Oral and Maxillofacial Surgeons; Affiliate Fellow Philippine Academy for Head and Neck Surgery Incorporated; Fellow Asian Association of Oral and Maxillofacial Surgeons.
He finished his Doctor of Oral Medicine at Centro Escolar University; Master of Science in Health Science Education, major in Dental Education; Clinical Attachment in Oral and Maxillofacial Surgery in Malaysia; Training in Traditional Chinese Medicine in Taipei Hospital, Taiwan; Advanced Dental Implantology in Jerusalem, Israel; Dental Implantology in Israel; Cleft lip and Cleft Palate surgery.