



OUR TEAM
Marites A. Barrientos, MD
HEAD OF FINANCE

Dr. Tess
Marites A. Barrientos, MD, FPOGS, FPSRM, FPSGE
Head of Finance
Dr. Marites A. Barrientos earned her medical degree from the St. Luke’s College of Medicine in 2005. She then proceeded to complete her residency training in Obstetrics and Gynecology at St. Luke’s Medical Center Quezon City (2009). Dr. Tess completed her fellowship training in Reproductive Endocrinology and Infertility (2012) in the same institution. Currently, she is a member of the faculty of the St. Luke’s Medical Center College of Medicine.
Dr. Tess has served in notable roles within the medical community- as a former Public Relations Officer of the Philippine Society for Reproductive Medicine, Inc. (PSRM), she contributed significantly to the organization’s mission and initiatives; as the Editor-in-Chief of the PSRM Newsletter, she worked to disseminate valuable information regarding the society and the practice of reproductive medicine.
Hospital Affiliations:
- St. Luke’s Medical Center – Quezon City
- Providence Hospital, Inc.
Ma. Isidora Margarita Yap-Garcia, MD
HEAD OF HUMAN RESOURCES

Dr. Maris
Ma. Isidora Margarita Yap-Garcia, MD, FPOGS, FPSRM
Head of Human Resources
Dr. Ma. Isidora Margarita Yap-Garcia obtained her medical degree from the University of Santo Tomas Faculty of Medicine and Surgery Manila in 2003. In 2008, she finished residency training in Obstetrics and Gynecology at the University of the Philippines-Philippine General Hospital. Dr. Maris then proceeded to complete her fellowship training in Reproductive Endocrinology and Infertility at the St. Luke’s Medical Center – Quezon City in 2012. She later completed a fellowship training in minimally invasive gynecology at the University of Ottawa in 2018.
Dr. Maris has several professional appointments, which include being an Assistant Professor at the St. Luke’s Medical Center College of Medicine and an International faculty of the Experts Group On Inositol (EGOI) and Polycystic Ovarian Syndrome Society. Currently, she is the Head of the Section of Reproductive Medicine at ManilaMed Medical Center and also sits on the board of the Philippine Society of Reproductive Medicine as Board Treasurer. In addition, she is a board member of the Philippine Society for Fertility Preservation and the Bayside Council of Obstetrics and Gynecology. Her special professional focus is on Endometriosis, PCOS and infertility, with speaking engagements and published papers on these topics both locally and internationally.
Hospital Affiliations:
- St. Luke’s Medical Center, Quezon City
- Medical Center Manila (ManilaMed)
Maria Concepcion Ilao-Oreta, MD
MEDICAL DIRECTOR

Dr. Ching
Maria Concepcion Ilao-Oreta, MD, MSc, MBAH, FPOGS, FPSRM, FPSGE, FPSLS
Medical Director
Dr. Ching earned her medical degree from the University of the East Ramon Magsaysay Memorial Medical Center and completed her residency in Obstetrics and Gynecology at the Philippine General Hospital. She pursued fellowship training in Reproductive Endocrinology and Infertility at the University of Illinois, Department of Obstetrics and Gynecology. In 2009, she obtained her Master’s degree in Business Administration in Health (MBAH) from the Ateneo Graduate School of Business. She further advanced her expertise with a Master of Science degree in Reproductive Medicine and Clinical Embryology from the Chinese University of Hong Kong in 2022. Dr. Ching also received specialized training in assisted reproductive technology at the Rush-Presbyterian – St. Luke’s Medical Center in Chicago, at the Tu Du Hospital in Vietnam, and the National University Hospital in Singapore.
Throughout her illustrious career, Dr. Ching has been instrumental in shaping the landscape of reproductive medicine in the Philippines. She established the fellowship program of the Section of Reproductive Endocrinology and Infertility at the St. Luke’s Medical Center, Quezon City in 2003, where she served as program director until year 2008. Her dedication to education and training has paved the way for numerous aspiring specialists to excel in the field. She is presently the Head of the Section of Reproductive Medicine at the St. Luke’s Medical Center, BGC.
Dr. Ching’s expertise in assisted reproductive technology and fertility treatment is unparalleled, with a remarkable track record of hundreds of successful cases. She is deeply committed to providing personalized and comprehensive care to her patients, ensuring that each individual receives the highest standard of treatment tailored to the patient’s unique needs.
Hospital Affiliations:
- St. Luke’s Medical Center, Quezon City
- St. Luke’s Medical Center, BGC
Mary Liezl N. Yu, MD
HEAD OF OPERATIONS

Dr. Mary
Mary Liezl N. Yu, MD, MBHARE, FPOGS, FPSRM
Head of Operations
Dr. Mary Liezl N. Yu obtained her medical degree from the University of Santo Tomas Faculty of Medicine and Surgery in 2007. She underwent residency training in Obstetrics and Gynecology at the University of the Philippines-Philippine General Hospital in 2014 and served as Chief Resident in 2015. She then pursued further training in Reproductive Endocrinology and Infertility in the same institution, graduating in 2017. In 2020, Dr. Mary completed her fellowship training in In Vitro Fertilization in the Center for Advanced Reproductive Medicine and Infertility at St. Luke’s Global City. Thereafter, in 2022, she obtained her Master’s degree in Biotechnology of Human Assisted Reproduction and Embryology from the Instituto de Valenciano Infertilidad, University of Valencia, Spain.
Currently, Dr. Mary serves as faculty at the University of Santo Tomas Faculty of Medicine and Surgery, Department of Obstetrics and Gynecology.
Hospital Affiliations:
- Delos Santos Medical Center
- Perpetual Succor Hospital
- Chinese General Hospital
- St. Luke’s Medical Center – Global City
Mikaela Erlinda M. Bucu, MD
HEAD OF COMMUNICATIONS

Dr. Myka
Mikaela Erlinda M. Bucu, MD, MBHARE, FPOGS, FPSRM, FPSGE
Head of Communications
Dr. Mikaela Erlinda M. Bucu obtained her medical degree from the University of the Philippines College of Medicine Manila. She underwent residency training in Obstetrics and Gynecology and fellowship in Reproductive Endocrinology and Infertility at the UP-Philippine General Hospital, graduating in 2016.
She went on to obtain a Master’s degree in Biotechnology of Human Assisted Reproduction and Embryology from the Instituto de Valenciano Infertilidad, University of Valencia, Spain in 2022, supplemented by a clinical fellowship in Reproductive Medicine in the same institution in 2024. This was then followed by an intensive clinical rotation in IVF at the Repro Optima Center for Reproductive Health, Cebu, Philippines. Currently, Dr. Myka is a clinical associate professor at the Department of Obstetrics and Gynecology, UP-PGH where she pursues her passion for teaching and research.
Hospital Affiliations:
- Philippine General Hospital
- Manila Doctors Hospital
- Medical Center Manila (ManilaMed)
- St. Luke’s Medical Center – Global City
LABORATORY

Arfie P. Ramos, RMT
SENIOR EMBRYOLOGIST
LABORATORY MANAGER
MEDICAL TECHNOLOGIST
MEDICAL TECHNOLOGIST
ASSOCIATE
PATIENT CARE
HEAD NURSE
NURSE
NURSE ATTENDANT
SUPPORT
SR. ADMIN OFFICER
RECEPTIONIST
ADMIN OFFICER
HOUSEKEEPING