OIC, Director

Dr. Carlos assists the Director in ensuring that the Institution’s vision, mission, and strategic objectives are achieved and oversees the plans and operations of the 5 divisions of RITM. She chairs the Selection and Promotions Board, Program of Awards and Incentives for Service Excellence (PRAISE), Emergency Operations Center and the Diarrheal Disease Study Group of RITM. She also serves as head of the Antimicrobial Resistance Surveillance Program of the Department of Health, and the Institution’s representative for the Philippines in the World Health Organization (WHO) Global Salmonella Surveillance and WHO Gonococcal Resistance Surveillance Program in the Western Pacific.

She is co-investigator at the Asian Network for Surveillance of Resistant Pathogens (ANSORP) and a member of the International Advisory Board of Asia-Pacific Research Foundation for Infectious Diseases (ARFID). In addition, Dr. Carlos is head of the Task Force on Antimicrobial Resistance, National Codex Committee of the Departments of Health and Agriculture. She was the Philippines’ Principal Investigator for the Asian Rotavirus Surveillance Network and was previous president of the Pediatric Infectious Disease Society of the Philippines. She was the founding president of the Alliance for Prudent Use of Antibiotics –Philippines (APUA) and served until May 2006.

Dr. Carlos graduated Magna Cum Laude from the University of the Philippines, Diliman with a Bachelor of Science degree, major in Zoology and took up her Doctor of Medicine at the UP-PGH Medical Center. She then pursued residency training in Pediatrics and thereafter a fellowship in Infectious Diseases at the UP-PGH. Dr. Carlos is a Career Executive Service Official IV.



Chief, Clinical Research Division

Dr. Quiambao helms the management of the Clinical Research Division. She is the Chairperson of the Department of Pediatrics and the Group Leader of the Rabies Research Group. She also heads the RITM Surveillance and Response Unit (SRU) and the Gender and Development Focal Point System Technical Working Group.

Dr. Quiambao has a Bachelor’s Degree in Psychology from the University of the Philippines. She took up Doctor of Medicine at the University of the East Ramon Magsaysay Memorial Medical Center (UERMMMC) and earned her certificate course on Organizational Management and Management Analysis from the Development Academy of the Philippines. She has been a Pediatrician since 1988 and an Infectious Disease Specialist since 1990. She was the Infection Control Committee chairman of De Los Santos Medical Center for 20 years until 2010 and the President of PIDSP in 2012-2014. Dr. Quiambao is a fellow at the Philippine Pediatric Society, a life member to the Philippine Medical Association and Philippine Society for Microbiology, and Infectious Disease (PSMID), among many other medical society in the country.

Currently, Dr. Quiambao is the principal investigator for various clinical researches and has been a peer reviewer at various medical journals such as Journal of Clinical Virology, Vaccine, Journal of Travel Medicine, Journal of the Philippine Pediatric Society, and PDISP Journal among many others. She is also member of the Department of Health’s Technical Working Group on Rabies, and the Pediatric Infectious Disease Society of the Philippines (PDISP). She is also part of the WHO Expert Panel on Rabies, Asian Rabies Expert Bureau, Rabies Expert Forum, and other international societies.


Chief, Laboratory Research Division

As the current Chief of the Laboratory Research Division (LRD), Dr. Tandoc supervises, coordinates, and monitors the training and clinical referral services of the LRD.

Currently, Dr. Tandoc is part of the Project Management Team of the Philippine National Influenza Center of RITM. He is a member of the Technical Working Group on 2015-2019 Strategic Plan for Expanded Program on Immunization (DPO 2014-7470), and a faculty and facilitator at the Hospital Management Training for Ebola Virus Disease Preparedness. Dr. Tandoc is also the Chair of the DOH’s Committee on Quality Assurance of Public Health Programs with Laboratory Services.

Dr. Tandoc is an anatomic and clinical physician. He took up Doctor of Medicine at the University of Santo Tomas, where he also graduated magna cum laude under the degree program BS Biology. He is the Chair of the Committee on Publications of the Philippine Society of Pathologists, Inc and the Editor-in-Chief of Philippine Journal of Pathology and SCOPE—the official newsletter of the Philippine Society of Pathologists. He is also a peer reviewer at the WHO Bulletin, an editorial coordinator at the Journal of ASEAN Federation of Endocrine Associations (JAFES), and a copy editor at the Acta Medica Philippina.


Chief, Biologicals Production Division

As the Division Chief of the Biologicals Manufacturing Division (BMD), Dr. Macalalad is part of the RITM Executive Committee. He oversees the planning and administering of all the activities of the BMD, supervises the work and activities concerning the production of vaccines (i.e. BCG, PCAV), and storage and distribution of the Expanded Program on Immunization (EPI) vaccines and other biologicals. Dr. Macalalad also decides the approval of the requests for local and international trainings. As the Division Chief, he ensures that the production of vaccines and other biologicals are in accordance with the cGMP.

Prior to taking the helm at BMD, Dr. Macalalad was the head of the National Tuberculosis Reference Laboratory (NTRL) for more than a decade and was an active consultant as an Adult Infectious Disease Specialist from 2007 until July 2015. He has also once served as the Officer-in-Charge of the Laboratory Research Division from 2007 to 2009. Apart from these, Dr. Macalalad also served in the academe as a part-time associate Professor at the De La Salle Health Science Institute-College of Medicine from January 1994 to June 2015. He has authored papers on drug resistance surveillance, clinical research on flu, meningococcal and varicella zoster vaccine and other researches.

Dr. Macalalad took his bachelor’s degree in Biology at the University of the Philippines Los Baños and his master’s degree in Public Health at the University of The Philippines-College of Public Health. He earned his medical degree at the De La Salle Health Science Institute.




Chief, Administrative Division

As the Chief of the Administrative Division, Mr. Villarico supervises the planning and implementation of the activities of the division and ensures that the Civil Service Commission (CSC)’s regulations are well implemented among the Institute’s employees.

Mr. Villarico is a Certified Public Accountant (CPA) and has a Master in Public Administration (MPA). Prior to serving the Institute, he was a piscal analyst at the Population Center Foundation. He was an administrative officer at the Biologicals Production Services and served the Bureau of Research and Laboratories as the chief accountant.



Chief, Finance Service Division

As the Chief Finance Officer, Mr. Herrera supervises the activities of the Finance Service Division. He directly assists the Director on all strategic and tactical matters concerning the Institute’s budget management, cost benefit analysis, forecasting needs, and funding sources. He also manages the Institute’s compliance with the financial policies and procedures mandated by the government.

Prior to his appointment as Chief of the Finance Service Division, Mr. Herrera was Chief of the Hospital Operations and Patient Support Service (HOPSS) at the Western Visayas Sanitarium, where he was also an Executive Committee member.

Mr. Herrera earned his Masters degree in Business Management at the University of the Philippines Visayas (UPV). He is a Certified Public Accountant (CPA) and is a member of the Government Association of Certified Public Accountants (GACPA), Philippine Institute of Certified Public Accountants (PICPA), and Registered Financial Planners (RFP) Philippines.