Our Team

Prof. Dr. Irene Mathijssen studied medicine at Erasmus University in Rotterdam, The Netherlands and did her plastic and reconstructive surgery training at Erasmus Medical Center. Her thesis on craniosynostosis was successfully defended in 2011. In 2005, she did a craniofacial surgery fellowship with Dr. Eric Arnaud in Paris.

She became Professor, especially in craniofacial anomalies, in 2011 and has been Head of the Department of Plastic and Reconstructive Surgery and Hand Surgery at Erasmus Medical Center since 2016. In that year, she finished an MBA-Health. Irene Mathijssen has been Secretary-Treasurer of the International Society of Craniofacial Surgery (ISCFS) since 2013.

She is the coordinator of the European Reference Network on rare craniofacial anomalies and ENT disorders, a network of 42 hospitals in 21 European countries, since the start in 2017.

Cassio Eduardo Raposo do Amaral completed his training in plastic surgery at the University of Campinas in 2005 after a comprehensive three-year mentorship program supervised by his late father, Dr. Cassio Raposo do Amaral, an internationally recognized plastic and craniofacial surgeon. In 2006, Dr. Raposo traveled to the United States to gain additional experience in craniofacial and cleft lip and palate surgery from Drs. Joseph G. McCarthy and Court B. Cutting at the Institute of Reconstructive Plastic Surgery-NYU, immediately followed by an international fellowship at UCLA, supervised by Drs. Henry K. Kawamoto and James P. Bradley. In 2008, Dr. Raposo was selected as an ASPS International Scholar and returned to the United States to gain additional training and experience. Dr. Raposo subsequently received a PhD from the University of Sao Paulo, presenting his thesis in bone tissue engineering under the supervision of Dr. Nivaldo Alonso.

Dr. Raposo began working full-time at SOBRAPAR Hospital in 2007, a hospital located in Campinas, Sao Paulo, which had been established in 1979 by his late father.
At SOBRAPAR Hospital, Dr. Raposo directed all protocols and data collection and performed craniofacial surgery and surgery for cleft lip and palate and other congenital craniofacial anomalies. Along with his brother, Cesar Augusto Raposo do Amaral, also a plastic surgeon, Dr. Raposo consolidated a formal organizational structure at SOBRAPAR Hospital to enable onsite treatment of congenital patients from all over Brazil.

Dr. Raposo is currently the director of the Craniofacial Surgery fellowship at SOBRAPAR Hospital and has authored more than 170 published articles in English and Portuguese medical literature related to craniofacial surgery and congenital anomalies, including, but not limited to, orbital translocation in hypertelorism, syndromic craniosynostosis and fat grafting in craniofacial deformities, as well as specific chapters in more than 27 books. He also edited Cleft Lip and Palate Treatment: A Comprehensive Guide, a book published by Springer.

Dr. Raposo is an active member of seven professional societies, including the Brazilian Society of Plastic Surgery, the Brazilian Association of Cranio-Maxillo-Facial Surgery, the Brazilian Cleft Palate Association, the Brazilian Burn Society, the American Society of Plastic Surgery, Latin American Craniofacial Association and the International Society of Craniofacial Surgery.

Dr. Raposo has received more than 33 scientific best-paper awards from the Brazilian Society of Plastic Surgery and the Brazilian Association of Cranio-Maxillo-Facial Surgery. Dr. Raposo served as President of the Brazilian Association of Cranio-Maxillo-Facial Surgery from 2016 to 2020, is President-Elect of the Latin American Craniofacial Association (2022-2024), and has held leading positions at the Brazilian Society of Plastic Surgery. He currently serves as a professor in the neurosurgery division at the University of Campinas, headed by neurosurgeon Dr. Enrico Ghizone.

Dr. Jesse Taylor is Chief of the Division of Plastic, Reconstructive, and Oral Surgery at Children’s Hospital of Philadelphia (CHOP), specializing in the treatment of children and adolescents with congenital and acquired differences of the face and skull. He currently acts as Co-Director of CHOP’s Cleft Lip and Palate Program, Co-Director of the Craniofacial Program, and Director of the University of Pennsylvania/CHOP Craniofacial Fellowship Program.

He is also the holder of the Peter Randall Chair in Plastic and Reconstructive Surgery and President of the Board of Children’s Surgical Associates at CHOP. A graduate of Vanderbilt University School of Medicine, Dr. Taylor completed his plastic surgery residency and fellowship at The Johns Hopkins Hospital and followed his passion for craniofacial reconstruction as a craniofacial surgery fellow in Mexico City, Mexico.  Dr. Taylor focuses his practice on craniosynostosis surgery, jaw surgery, surgery for facial asymmetries, cleft lip and palate repair, rhinoplasty, otoplasty, cranial reconstruction, cranio-maxillo-facial distraction osteogenesis, and complex facial reconstruction.

He lectures both nationally and internationally to educate surgeons and patients on the latest techniques in craniofacial and cleft surgery and contributes to the care of international cleft and craniofacial patients throughout Central and South America, Europe, and Asia.

Professor
Former Chair , Department of Plastic & Reconstructive Surgery
Deputy Chief, Office for Planning Coordination
Head of International Business Development

College of Medicine, University of Ulsan
Asan Medical Center, Seoul, South Korea

President,  Korean Society of Simulation Surgery (KSSIS)
Vice President,  Korean Society of Head & Neck Oncology (KSHNO)
President, Korean Academic Association for Head & Neck Reconstruction in Plastic Surgery (KAAHNR)
Past President,  Korean Cleft Palate and Craniofacial Association (KCPCA)
Chairman, Scientific Committee, Korean Society of 3D Printing in Medicine (KS3DPM)
Chairman,  Insurance Committee,  Korean Society of Plastic & Reconstructive Surgeons (KSPRS)
Board, World Society of Simulation Surgery (WSSS)

Mr. Jayaratnam (Jay) Jayamohan is Consultant Pediatric Craniofacial and Neurosurgeon at Oxford University Hospitals NHS Foundation Trust. He qualified in 1995 at St. Mary’s Hospital in London and trained in neurosurgery at The Atkinson Morley Hospital, London and at the Institute of Neurological Sciences, Glasgow. Thereafter, he was the Rittersporn Visiting Fellow in pediatric neurosurgery at the Sick Children’s Hospital in Toronto.

Although fully trained in both adult and pediatric neurosurgery, he now devotes his clinical time looking after children and young people with neurosurgical conditions. Mr. Jayamohan’s neurosurgical special interests include: craniofacial surgery, hydrocephalus, brain tumours, spinal dysraphism, Chiari malformation, child and young adult head injury, and antenatal counselling for spina bifida and hydrocephalus. He is also involved heavily in medicolegal work, advising on head and spinal injuries to assist courts, prosecution, and defence teams.

When not operating or reporting on medico-legal cases, Mr. Jayamohan enjoys hanging out with his friends from the International Brain Trauma and Mechanics Laboratory at Oxford University in an attempt to discover clever ways to protect the brain from injury.

Pr. Roman Hossein Khonsari is consultant in the department of Maxillofacial surgery and Plastic surgery of Necker – Enfants malades Hospital (Assistance Publique – Hôpitaux de Paris) and professor at the Faculty of Medicine, Université Paris Cité. He is a former student of Ecole normale supérieure (Paris). He trained in general surgery and maxillofacial surgery in Nantes and Paris, and then followed a craniofacial surgery fellowship at Great Ormond St. Hospital (London). He obtained a PhD in craniofacial development from King’s College London.

Pr. Khonsari is involved in craniofacial surgery together with the neurosurgical team of Necker – Enfants malades Hospital within the CRANIOST rare disease network (Filière TeteCou, ERN CRANIO), with a specialization in the management of syndromic craniosynostoses. He also performs orthognathic surgery, mostly for patients with underlying craniofacial conditions.

Pr. Khonsari is the medical head of PRIM3D, the central 3D platform of Assistance Publique – Hôpitaux de Paris and leads the Craniofacial Growth and Form laboratory at Institut Imagine. He acted as chief medical officer of the French Health Data Hub from 2021 to 2025 and leads the scientific committee of the ERN CRANIO since 2021.

Dr. Catherine Lee is a Craniofacial Orthodontist with over 25 years of experience in cleft and craniofacial deformity management. She earned her Bachelor of Dental Surgery from the University of Adelaide, Australia, and completed her Orthodontic Residency at the New York University (NYU) College of Dentistry. She then pursued a Craniofacial Orthodontic Fellowship at NYU’s Institute of Reconstructive Plastic Surgery (IRPS) under Dr Barry H. Grayson, working with Dr Joseph G. McCarthy on pioneering craniofacial distraction osteogenesis and with Dr Court B. Cutting on naso alveolar molding for cleft patients.

Based in Singapore since 2001, Dr Lee serves as Craniofacial Orthodontic Consultant to the Departments of Plastic, Reconstructive & Aesthetic Surgery at Singapore General Hospital (SGH) and National University Hospital (NUH), leading multidisciplinary craniofacial care across the Asia region.

As Patron and Medical Director of the Cleft Care Indonesia Foundation since 2006, she has developed sustainable models of care for underprivileged children with cleft and craniofacial conditions in remote regions. Her humanitarian and clinical contributions have been recognised with the Global Australian GameChanger Award (2023) and a nomination for the Australian Distinguished Alumni Award (2021).

A member of ISCFS since 2003, Dr Lee was elected to the Council in 2025, representing Orthodontics and advocating for integrated, multidisciplinary craniofacial care worldwide.

Dr. Xiongzheng Mu is a Professor at Huashan Hospital at Fudan University in Shanghai, China. He graduated from Shanghai Second Medical University in 1984 and began his plastic surgeon career. He worked at the Shanghai Ninth People’s Hospital, Department of Plastic and Reconstructive Surgery, for twenty-seven years, and from 1999 to 2000 he had craniofacial training at Necker Children’s Hospital in Paris, France with Dr. Daniel Marchac and in San Francisco, California with Dr. Bryant Toth and in Dallas, Texas with Dr. Kenneth Salyer. He has been working in Huashan Hospital from 2011 until now.

His clinical practice focuses on the surgical correction of craniofacial deformities of both bones and soft tissues, distraction procedures for upper airway obstruction and microsomia, and oriental aesthetic orthognathic and facial skeleton surgery. His research interests include image-based pre-surgical design and absorbable bone substitute.

Dr. Mu is a Past President of the Asian Pacific Craniofacial Association (APCFA, 2012) and has held many leadership positions in craniofacial associations in mainland China in the past two decades.

Benjamin Massenburg, MD, is a plastic surgeon who specializes in craniofacial surgery, jaw surgery, rhinoplasty, comprehensive cleft lip and palate care, facial reconstruction after trauma, facial feminization, and facial aesthetic surgery.  He completed fellowship training in craniofacial surgery at The Children’s Hospital of Philadelphia. Dr. Massenburg did his residency in plastic and reconstructive surgery at University of Washington Harborview Medical Center, where he was a two-time recipient of the Loren Engrav Research Award for his research on three-dimensional craniofacial and cleft shape changes. He earned his medical degree with distinction in research from Icahn School of Medicine at Mount Sinai in New York and spent a year in medical school as a Paul Farmer Global Surgery Research Associate, splitting the year between Brazil and India while working on implementation of the Lancet Commission on Global Surgery as well as craniofacial surgical care.