Timothy A. Scott, MD

Dr. Scott joined Dr. Schroff 15 years ago with the goal of providing personalized specialty services to the local Walnut Creek community.  After completing medical school at the University of Nebraska, Dr. Scott completed his Otolaryngology residency at the University of California, San Francisco.  He then earned a Fellowship in Facial Plastics at the University of California, Irvine.  Dr. Scott is board certified in Facial  Plastic and Reconstructive Surgery, and has special interest in this area, as well as otology.  He practices in both the San Ramon and Walnut Creek offices.

Abraham G. Hsieh, MD

Dr. Hsieh joined Diablo Valley ENT in 1998 after working with Kaiser Permanente for 10 years as the Assistant Chief in Head and Neck Surgery in Solano County.  He earned his medical degree from Tufts and completed his Otolaryngology residency at the University of California, Irvine.  Dr. Hsieh has special interest in rhinology and sinus surgery, head and neck oncology, and facial plastic and reconstructive surgery.  Dr. Hsieh practices in the Walnut Creek and Brentwood offices. 

Michael P. Murphy, MD

Dr. Murphy joined Diablo Valley ENT in 2002 after receiving his doctorate from Saint Louis University School of Medicine, and Master’s degree from University of Washington School of Public Health.  He completed his residency in Otolaryngology at the University of Washington School of Medicine.  Dr. Murphy has special interest in rhinology (nasal and sinus disorders), laryngology (voice disorders), and sleep apnea.  Dr. Murphy practices in both the San Ramon and Walnut Creek offices. 

Valerie & Greg Fitzgibbons, MA CCC-A

Audiologists Valerie and Greg Fitzgibbons, provide comprehensive audiology services, including hearing tests for both children and adults, videonystagmography for patients with vertigo or imbalance problems, and auditory brainstem response evaluations to screen for tumors of the auditory nerve.  Audiology services are offered at our Walnut Creek and Brentwood offices. 

Marilyn Nikkari, MS CCC-SLP

Ms. Nikkari provides speech pathology services with an emphasis in speech, language, cognition, voice and swallowing disorders.  She uses such specialized procedures as fiberoptic endoscopic evaluation of swallowing (FEES), laryngeal videostroboscopy, and voice therapy.  Ms. Nikkari offers services at our Walnut Creek office. 

Jeanne Roder, MS CCC-SLP

Ms. Roder provides speech pathology services with an emphasis in voice and swallowing disorders.  She uses such specialized procedures as fiberoptic endoscopic evaluation of swallowing (FEES), laryngeal videostroboscopy, and voice therapy. Ms. Roder has extensive clinical experience diagnosing and treating speech pathology disorders for patients with head and neck cancer, CVA, TBI, dysphagia, and those with tracheostomy tubes/ventilator dependency.  Ms. Roder offers services at our Walnut Creek office.