Bonnie Sun, MD

Wojtek Mydlarz, director of Johns Hopkins Head and Neck Surgery in the National Capital Region, specializes in the treatment of benign and malignant tumors of the head and neck, including the upper aerodigestive tract, salivary glands, skull base, thyroid, skin and soft tissue. Dr. Mydlarz is a medical officer and a clinical and research collaborator in the head and neck surgery branch of the National Institutes of Health (NIH). His research interests include evaluating both surgical and nonsurgical treatment outcomes in patients with head and neck cancer. He is interested in the complex molecular biology of head and neck cancer, as well as potential clinical applications of novel targeted cancer therapies. He is actively involved in clinical trial development and implementation at the NIH and Johns Hopkins. After earning his medical degree from the Johns Hopkins University School of Medicine, Dr. Mydlarz completed his internship and residency in otolaryngology–head and neck surgery at The Johns Hopkins Hospital. Additionally, he completed a Science of Clinical Investigation Training Program at Johns Hopkins Bloomberg School of Public Health and specialized fellowship training in head and neck surgical oncology at the University of Texas MD Anderson Cancer Center. Dr. Mydlarz has contributed to numerous professional publications, authored a variety of articles and book chapters, and has been invited to give many lectures. He serves on the editorial board for Oral Oncology and Laryngoscope Investigative Otolaryngology, and is a journal reviewer for Oral Oncology, Head and Neck, Laryngoscope and JAMA Otolaryngology–Head and Neck Surgery.

Nyall London has a unique clinical practice focused on the care of patients with sinonasal and skull base cancers. As one of the few surgeons trained in both head and neck cancer surgery, as well as rhinology and skull base surgery, he offers patients comprehensive sinonasal tumor surgical care, including open and endoscopic approaches as well as neck dissection surgery. Dr. London has developed notable patient education events about the multidisciplinary and long-term care of patients with sinonasal malignancies. Additionally, he is an innovator of clinical trials for these rare tumors, with open clinical trial options available and multiple others in development. Internationally recognized for his expertise in the care of patients with sinonasal and skull base cancers, Dr. London was an associate editor for the first international consensus statement on sinonasal tumors, and was appointed president of the International Network for Sinonasal Cancer Research (2024–26). He directs a research laboratory at the National Cancer Institute/National Institutes of Health focused on therapeutic advances and mechanisms of sinonasal tumorigenesis. Dr. London has published more than 130 peer-reviewed research articles, reviews and book chapters, including co-first author publications in Nature, Nature Medicine, Science Translational Medicine and Nature Cell Biology. He earned his medical and doctoral degrees from the University of Utah, and completed his residency in otolaryngology–head and neck surgery at Johns Hopkins. He also accomplished a fellowship in open and endoscopic head and neck and skull base surgery at The Ohio State University, under the direction of Dr. Ricardo Carrau.

Hamid Hassanzadeh, M.D., is an orthopaedic surgeon specializing in spine conditions and disorders. He treats patients with back and neck pain due to degenerative disk disease, complex and simple spinal deformities such as scoliosis and kyphosis, spinal infections, spinal tumors and spinal trauma. He is experienced in a variety of spine procedures, including minimally invasive and robotic spine surgery and disk replacement.A Professor of Orthopaedic Surgery and division chief of Johns Hopkins orthopaedic surgery in the National Capital Region, Dr. Hassanzadeh came to Johns Hopkins from the University of Virginia, where he was a tenured associate professor of orthopaedic surgery, director of the spine surgery fellowship, co-director of the UVA Spine Center and director of spine research. Dr. Hassanzadeh received his medical degree from the University of Hamburg, Germany, followed by a two-year neurosurgery residency at Westküstenklinikum Heide. He went on to complete his orthopaedic internship and residency at the Johns Hopkins University School of Medicine, followed by a spine surgery fellowship at Rush University Medical Center and a pediatric spine surgery fellowship at Shriners Hospital in Chicago, Illinois.In addition to treating patients, Dr. Hassanzadeh is dedicated to educating the next generation of orthopaedic spine specialists. He accomplished this in his previous role as director of a spine surgery fellowship, as a mentor to several postdoctoral fellows, as an instructor of multiple national and international training courses, and as an author of numerous talks and research publications.Dr. Hassanzadeh’s research interests include improving outcomes of spinal surgeries in adult and elderly patients, motion preservation, and outcomes after minimally invasive procedures. He is an award-winning researcher, has published more than 150 peer-reviewed papers and 40 textbook chapters and presented in many conferences and invited talks in the U.S. and internationally. His clinical care excellence earned him a spot on the Best Doctors in America list in 2019–20.