Glendale

Mark Whitaker, M.D.

Dr. Whitaker is an otolaryngologist specializing in neurotology. He is board certified by the American Board of Otolaryngology, with an additional certification in the subspecialty of neurotology.

He received his medical degree from The Pennsylvania State University College of Medicine and completed his residency in otolaryngology at Geisinger Medical Center. Following residency, he completed a fellowship subspecializing in otology and neurotology at The University of Pittsburgh Medical Center.

Isabel Feinstein, M.D.

Dr. Feinstein practiced Otolaryngology in Minnesota for over 20 years before relocating to Arizona. She was active in the medical community and in the teaching of medical students and residents. Dr. Feinstein joined AOC in 2007 practicing non-surgical General Otolaryngology. She has numerous clinical publications and multiple commendations and awards regarding patient care.

Dr. Feinstein lives in Scottsdale with her husband, Dr. Lawrence Boies Jr., who is a retired academic otolaryngologist. She enjoys travel, her dogs, cycling, and Italian language and art.

Scott Schraff, M.D.

Dr. Schraff is a Fellow in the American Association of Pediatrics and an active member of the American Society of Pediatric Otolaryngology. He is actively involved in local education as an Associate Professor of Otolaryngology at the University of Arizona School of Medicine - Phoenix; an Adjunct Assistant Professor at the Mayo Clinic; and works with residents and medical students from the Mayo Clinic, University of Arizona, and Midwestern School of Medicine.

Chetan Gujrathi, M.D.

Dr. Gujrathi is a Fellow in the American College of Surgeons and a member of the North American Skull Base Society. Dr. Gujrathi is currently serving as the Chief of Oncology & Robotics at the Head & Neck Institute of Banner University Medical Center (Phoenix). He is a member of both the Skull Base Team at Barrow's Neurological Institute and the CranioFacial Team at St. Joseph's Hospital and Medical Center and has had numerous clinical publications.

Dan Chapel, M.D.

Dr. Chapel is currently involved in medical student residency teaching programs at Banner Good Samaritan and St. Joseph's Hospital and Medical Center. He has served on the Board of the Maricopa Medical Society, along with numerous medical staff committees. He is active in research and has had numerous clinical publications. Dr. Chapel has a special clinical interest in pediatrics, head and neck diseases, and sinus/nasal surgery. Additionally, Dr. Chapel has been consistently recognized by Phoenix Magazine's "Top Docs" publication as one of the top ENT physicians in the valley.

David Simms, M.D.

Dr. Simms is a Fellow in the American College of Surgeons and is currently serving as the Chairman of the ENT section at St. Joseph's Hospital. He is actively involved in the teaching of medical students and residents and has a special clinical interest in pediatrics, head and neck diseases, and sinus/nasal surgery.

He is active in research and clinical publications and has been recognized by Phoenix Magazine's "Top Docs" publication as one of the top ENT physicians in the Valley.