Stanford University


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  • Grace S. Kim, MD

    Grace S. Kim, MD

    Assistant Professor of Otolaryngology - Head & Neck Surgery (OHNS)

    BioGrace S. Kim, MD is a pediatric otolaryngologist and surgeon-scientist in the Department of Otolaryngology–Head & Neck Surgery at Stanford University. Her clinical practice focuses on the full spectrum of pediatric otolaryngology, with particular expertise in hearing loss, chronic ear disease, thyroid disorders, vascular malformations and pediatric head and neck conditions. Her research investigates the immune mechanisms underlying congenital hearing loss and inner ear injury, with the goal of developing therapies to preserve hearing in children.

    Dr. Kim received her BA in Biochemical Sciences from Harvard University and her MD from Stanford University School of Medicine, where she also completed an additional year of research as a Howard Hughes Medical Institute Research Fellow. She completed residency training in otolaryngology–head and neck surgery at Stanford, including a two-year NIH-sponsored research fellowship investigating vestibular repair and regeneration, followed by fellowship training in complex pediatric otolaryngology at Stanford.

    Dr. Kim joined the Stanford faculty in 2023. She leads a translational research program investigating inner ear neuroimmunology and congenital hearing loss, using animal models to understand how congenital cytomegalovirus infection and immune responses impact the developing auditory system. Her long-term goal is to develop targeted therapies that prevent hearing loss in children. Her work is supported by an NIH Mentored Clinical Scientist Research Career Development (K08) Award, as well as funding from the American Society of Pediatric Otolaryngology and the Stanford Maternal & Child Health Research Institute.

  • Hyeonji Kim

    Hyeonji Kim

    Visiting Instructor/Lecturer, Ophthalmology

    BioDr. Kim is a translational bioprinting researcher specializing in tissue engineering and ocular regenerative medicine. She holds a Ph.D. in Mechanical Engineering. Her research focuses on developing innovative therapeutic platforms for ocular diseases using 3D bioprinting, biomanufacturing, and regenerative medicine.

    She has developed 3D-bioprinted corneal stromal constructs that replicate native collagen alignment and achieve transparency, successfully restoring visual function in preclinical beagle models and subsequent veterinary clinical applications. She also advanced a simplified in situ corneal therapy that has completed veterinary clinical trials and is now licensed for anticipated human trials. Currently, she is developing ocular therapeutic implants using advanced 3D printing approaches.

    Dr. Kim has collaborated with regulatory authorities and preclinical evaluation agencies to define guidelines for 3D-printed combination medical devices and to conduct safety testing of bioprinted corneas. Her work has been internationally recognized, contributing to her university's ranking as 12th in Reuters’ 2019 “Top 100 Most Innovative Universities,” and spans drug delivery, diagnostic and therapeutic devices, personalized medicine, and translational ophthalmology. Her long-term vision is to engineer personalized therapeutic implants and biofabrication technologies that bridge fundamental science and clinical translation, initially focusing on restoring vision and ultimately expanding to regenerative therapies for multiple organ systems.