Dr. Daniel W. Flis

Dr. Patrick Ha is chief of the UCSF Division of Head and Neck Surgical Oncology. His expertise in patient care covers the full scope of head and neck surgery, with a focus on thyroid and parathyroid surgery as well as endoscopic approaches to throat cancer surgery. Ha's research is currently focused on molecular changes that occur in adenoid cystic carcinoma of the salivary gland. Ha received an undergraduate degree in biology from Harvard University, graduating magna cum laude. He obtained his medical degree from Johns Hopkins School of Medicine, graduating with membership in the Alpha Omega Alpha Honor Medical Society. He then completed his residency training and a postdoctoral fellowship at the otolaryngology department of Johns Hopkins, along with advanced fellowship training in head and neck oncologic surgery. Ha serves on the editorial board of several medical journals, including Oral Oncology. He is the Irwin Mark Jacobs and Joan Klein Jacobs Distinguished Professor in Head and Neck Cancer. Dr. Ha is highly rated in 20 conditions, according to our data. His clinical expertise encompasses Adenoid Cystic Carcinoma, Salivary Gland Tumors, Tongue Cancer, Gastrostomy, and Laryngectomy. Dr. Ha is board certified in American Board Of Otolaryngology, Otolaryngology. Dr. Ha is currently accepting new patients.

Dr. Ivan H. El-Sayed is a head and neck cancer surgeon. He specializes in treating benign and malignant lesions of the salivary glands, paranasal sinuses and skull base. El-Sayed's research interests include examining the value of sentinel node biopsy (a procedure to check whether cancer has spread) for head and neck cancer. He also is investigating potential uses of lasers and nanoparticles for diagnosing and treating cancer. El-Sayed earned his medical degree and completed a residency in otolaryngology at Boston University School of Medicine. He completed a fellowship in head and neck oncology at UCSF. Dr. El-Sayed is highly rated in 21 conditions, according to our data. His clinical expertise encompasses Olfactory Neuroblastoma, Sinus Cancer, Teratocarcinosarcoma, Endoscopy, and Turbinectomy. Dr. El-Sayed is board certified in American Board Of Otolaryngology, Otolaryngology. Dr. El-Sayed is currently accepting new patients.

Dr. Jolie L. Chang is an otolaryngologist who specializes in surgery to treat obstructive sleep apnea. She serves as chief of the UCSF Division of Sleep Surgery. She has expertise in sleep endoscopy (a technique for assessing the airway during sleep) and upper airway surgery, snoring surgery, palate surgery, tongue base surgery and hypoglossal nerve stimulation implant surgery (implanting a device that controls tongue movement in sleep). She also specializes in minimally invasive surgery for noncancerous salivary gland disorders (such as salivary stones) with sialendoscopy (a method of examining the salivary gland openings and removing obstructions using a very small endoscope). She treats salivary blockage from stones and salivary issues related to treatment with radioactive iodine. She is also an expert in ultrasound of the head and neck and ear, nose and throat disorders. Chang's research interests include decision making in health care and improvements for sleep apnea therapy and sialendoscopy. She has written on topics related to hearing loss, salivary obstruction symptoms and treatment, otolaryngology resident perspectives, and smell and taste changes related to COVID-19. She has also authored book chapters on sleep apnea therapies, salivary disorders and imaging for salivary glands. She serves as the director of resident research for otolaryngology – head and neck surgery. Chang graduated from the Massachusetts Institute of Technology with a bachelor's degree and a master of engineering degree in electrical engineering and computer science. She earned her medical degree and completed her residency in otolaryngology – head and neck surgery at UCSF. She is a fellow of the American College of Surgeons. Dr. Chang is highly rated in 13 conditions, according to our data. Her clinical expertise encompasses Sialadenitis, Salivary Duct Stones, Obstructive Sleep Apnea, Endoscopy, and Stapedectomy. Dr. Chang is board certified in American Board Of Otolaryngology, Otolaryngology. Dr. Chang is currently accepting new patients.