Core Faculty
Location: 
PARIS, FRANCE
Dr. Sébastien Froelich
Lariboisière Hospital – APHP
Honorable Guest and Faculty
Dr. Sébastien Froelich is a Professor of Neurosurgery at University Paris Cité and Chairman of the Department of Neurosurgery at Lariboisière Hospital, part of Assistance Publique – Hôpitaux de Paris. He trained in medicine and neurosurgery at the University of Strasbourg and completed advanced skull base training at the University of Cincinnati. Dr. Froelich is internationally recognized for his work in skull base and endoscopic neurosurgery, vascular neurosurgery, and complex brain tumors. He serves as an international course director for IRCAD training programs and previously chaired the Skull Base Committee of the World Federation of Neurosurgical Societies (2016–2021). His research focuses on skull base techniques, chordomas, and neurosurgical innovation, with more than 200 peer-reviewed publications.
Location: 
MANILA, PHILIPPINES
Dr. Jerold Justo
The Medical City
Course Director
Dr. Jerold Justo is a neurosurgeon at The Medical City, where he completed his neurosurgical training and continues his practice with a focus on minimally invasive neurosurgery, neuroendoscopy, and skull base surgery. He further trained in skull base neurosurgery at Assistance Publique–Hôpitaux de Paris, Lariboisière Hospital in France under Dr. Sébastien Froelich. His work includes the management of complex cranial and skull base tumors, with participation in international courses and conferences, including as faculty at the 360° Skull Base Course at IRCAD in Strasbourg. In addition, he is involved in developing neurosurgical services in Aklan Province through Panay Health Care, contributing to the establishment of a Brain and Spine Center aimed at improving access to specialized neurological care in the region.
Location: MANILA, PHILIPPINES
Dr. Michael Sabalza
The Medical City
Skull Base Committee Chair AACNS 2026
Dr. Michael N. Sabalza is the Chair of Neurosurgery Departeent at Quirino Memorial Medical Center, and serves as Consultant Neurosurgeon and Faculty Instructor at The Medical City. He has advanced expertise in skull base, spinal, and minimally invasive neurosurgery, and has played a key role in training residents and mentoring fellows across multiple institutions.
Location: MANILA, PHILIPPINES
Dr. Jose Carlos Alcazaren
The Medical City
Course Co-Director
Dr. Jose Carlos S. Alcazaren, MD, FAFN completed a Skull Base and Microneurosurgery Fellowship at Weill Cornell Medicine Brain and Spine Center and neurosurgical training at Jose R. Reyes Memorial Medical Center. He is the current Training Officer of the Neurosurgery Residency Program at The Medical City and serves as a faculty instructor at Ateneo School of Medicine and Public Health.
INTERNATIONAL FACULTY
Location: 
KOWLOON, HONGKONG
Dr. Calvin Mak
Queen Elizabeth Hospital
Dr. Mak is the Vice President of Hong Kong Neurosurgical Society and Hong Kong Neuro-oncology Society, specializing in endoscopic, complex skull base surgery and minimally invasive neurosurgery. He currently works as Team Head and Consultant neurosurgeon at Queen Elizabeth Hospital in Hong Kong, and Clinical Associate Professor (Honorary) of the Chinese University of Hong Kong. He is the first in Hong Kong and China to perform endoscopic transorbital surgery, and has published a multidisciplinary textbook as well as various publications on new indications on transorbital surgery. He hosted the International Endoscopic Transorbital Society Congress 2025 in Hong Kong, and currently holds different positions in international neurosurgical societies including ACNS, AASNS, IFNE, ETOS, ISMINS, ASEN and Chinese neurosurgical societies. He is founder of Minimally Invasive Neurosurgery Training Academy.
He leads smart hospital development and digital transformation of hospitals in Hong Kong, chairing different committees in Kowloon Central Cluster, including Smart Hospital Management Committee, Innovation Committee, as well as chairman of the Digital Health Committee of Smart City Consortium, providing advice to policy makers in Hong Kong. Dr Mak was awarded the Ten Outstanding Young Persons in Hong Kong in 2022 for his achievement, and currently served on different government boards and University advisory committees.
Location: 
QUEBEC, CANADA
Dr. Pierre-Olivier Champagne
Laval University
Dr Champagne is a neurosurgeon working at CHU de Québec – Université Laval in Québec, Canada. Most of his clinical practice is focused on the treatment of skull base lesions and meningiomas. He is a proponent of the expanded endoscopic endonasal approach, endoscopic transorbital approach and microsurgical approaches to the skull base. He is a full professor at Université Laval where he founded his laboratory, the Université Laval Neurosurgical Innovation Laboratory. He is the director of the Université Laval hands-on skull base course, a yearly hands-on international course dedicated to skull base approaches and techniques and the director of the skull base fellowship program at Université Laval.
Location: 
SEOUL, KOREA
Dr. Won Jae Lee
Samsung Medical University
Dr. Won-Jae Lee is an Associate Professor in the Department of Neurosurgery at Samsung Medical Center, Sungkyunkwan University School of Medicine in Seoul, Korea. He specializes in brain tumors, skull base surgery, and stereotactic radiosurgery. His clinical and research interests focus on minimally invasive neurosurgical techniques, skull base tumors, and the radiosurgical management of brain tumors. Dr. Lee completed his neurosurgical training and fellowship at Samsung Medical Center and has published widely in peer-reviewed journals in the fields of skull base surgery and radiosurgery. He actively participates in international academic collaborations and is involved in surgical education and training in neurosurgery.
Location: SHUENG WAN, HONGKONG
Dr. Chu Caspar
Tung Wah Memorial Hospital (TMH)
Dr. Chu is a Consultant Neurosurgeon at Tuen Mun Hospital, Hong Kong. He obtained his MBChB from The Chinese University of Hong Kong and completed neurosurgical training in Hong Kong, earning fellowships from the Royal College of Surgeons of Edinburgh, the College of Surgeons of Hong Kong, and the Hong Kong Academy of Medicine. He is credentialed in Endovascular Neurointerventional Procedures and has received several distinctions, including the J. Douglas Miller Medal and the Distinguished Young Fellow Award from the Hong Kong Academy of Medicine. Dr. Chu serves as Council Member of the Hong Kong Society of Interventional and Therapeutic Neuroradiology and Co-opt Member of the Hong Kong Stroke Society, and is actively involved in clinical research and academic neurosurgery.
Location: MONTREAL, CANADA
Dr. Jonathan Chainey
Université de Montréal
Dr. Jonathan Chainey is a fellowship-trained neurosurgeon specializing in skull base surgery, with additional subspecialty training in Canada and France. He currently serves as a Clinical Assistant Professor in Neurosurgery at Université de Montréal. Dr. Chainey holds a Master of Science in Surgical Education from the University of Alberta and is pursuing a PhD in Health Policy, Management and Evaluation at the University of Toronto. His work focuses on surgical education, simulation, and the integration of machine intelligence in neurosurgery, alongside an active role in teaching and international academic collaboration.
LOCAL FACULTY
Location: MANILA, PHILIPPINES
Dr. Kenny Seng
The Philippine General Hospital (PGH)
Dr. Kenny S. Seng specializes in spine surgery, with subspecialty training through a Clinical Fellowship at Tan Tock Seng Hospital, National Neuroscience Institute in Singapore. He completed his Neurosurgery Residency at the Philippine General Hospital and earned his Doctor of Medicine degree from the University of Santo Tomas. Dr. Seng currently serves as Associate Professor at the University of the Philippines College of Medicine and as Training Officer of the Neurosurgery Residency Program at Jose R. Reyes Memorial Medical Center. He is affiliated with multiple tertiary hospitals, including PGH, JRMMMC, TMC, ManilaMed, Manila Doctors Hospital, De Los Santos Medical Center, PCMC, and CGHMC.
Location: MANILA, PHILIPPINES
Dr. Byron Hontiveros
Makati Medical Center (MMC)
Dr. Byron Hontiveros, MD, DPBNS, completed his neurosurgery residency training at Makati Medical Center and East Avenue Medical Center. He subsequently pursued fellowship training in Endoscopic and Minimally Invasive Skull Base Neurosurgery at the Pacific Neuroscience Institute, as well as further fellowship training in Skull Base Surgery and Neuroanatomy through the Stanford Neurotrain Program.