Office address, phone and fax:

Arizona Hearing & Balance Center

225 S. Dobson Road

Chandler, Arizona 85224

Phone: 480-558-5306

Fax : 480-558-5307

Hours of Operation

Our regular office hours are from 8:00 a.m. to 5:00 p.m., Monday through Friday. Please make appointments and/or request information during these hours.

  • Staff




Dr. Madeline Frangenberg

Dr. Madeline Frangenberg received her Doctorate of Audiology degree from A.T. Still University in Mesa, AZ. Prior to her graduate studies, she received her Bachelor of Arts in Communication Sciences and Disorders from the University of Iowa. She completed her externship at the Medical College of Wisconsin and joined Arizona Hearing and Balance in September 2019. Dr. Frangenberg provides both pediatric and adult services for diagnostic testing, cochlear implant evaluations and mapping, as well as hearing aid evaluations and fittings. She maintains a dispensing audiologist license from the state of Arizona and is a Fellow of the American Academy of Audiology.

Dr. Adam Cassis
Dr. Adam Cassis

Dr. Adam Cassis

Adam M. Cassis, MD is the newest member to our medical team at Arizona Hearing & Balance Center.  He is a Board Certified Neurotologist, having completed his residency in otolaryngology-head and neck surgery at West Virginia University School of Medicine and his fellowship in neurotology at the prestigious House Ear Clinic-USC School of Medicine in Los Angeles, CA. 

Dr. Cassis comes to us from the University of West Virginia where he was an Associate Professor and the Director of Otology & Skull Base Surgery and Cochlear Implant Program for over 7 years.  Dr. Cassis is has given multiple presentations and written many publications concerning the latest technology and treatments in otology and neurotology, making him one of the most respected and qualified in his field of expertise.