At Hearing Associates PC, we offer comprehensive, patient-centered audiology services to patients in Mason City, Iowa and the surrounding areas. Our expert audiologists and hearing specialists provide treatment for a wide variety of disorders including hearing loss and tinnitus for both children and adults. We’re dedicated to helping you improve your quality of life through better hearing.


(800) 621-6424


250 South Crescent Drive, Suite 100
Mason City, IA 50401



(641) 494-5185

Office Hours

Open Monday - Friday 7AM to 5PM

Audiology & Hearing Aid Services

  • In-depth, diagnostic hearing testing and evaluations
  • Hearing device services including: fitting, maintenance, and repair
  • Variety of hearing aid and noise protection products
  • Earwax removal service
  • Balance testing
  • Aural rehabilitation
  • Ongoing consultation

Hearing Aid Brands

  • Oticon
  • Lyric
  • Phonak

Mason City Hearing Care Professionals

Image of Audiologist Stuart Trembath

Stuart Trembath M.A., CCC-A

Owner & Audiologist

Image of Audiologist Tanya Harper

Dr. Tanya Harper Rowe Au.D., CCC-A


Image of Audiologist Rachael D.

Rachel Dolezal M.A., CCC-A


Image of Audiologist  Christine H.

Christine Heinskill Au.D., CCC-A



Image of Audiologist Jeffrey King

Jeffrey King Au.D., CCC-A


Image of Hearing Specialist Carmen

Carmen Wickering

Hearing Instrument Specialist

Image of Audiology Staff

Jacqueline Keech