Greater Milwaukee Otolaryngology - Aurora Healthcare ENT

Call: (414) 395-8910
4600 W Loomis Rd Ste 201 Greenfield, WI 53220

Clinic staff

Gretchen Sackmann


Dr. Gretchen Sackmann is one of our audiologists helping out patients achieve healthy hearing. She is specifically trained to diagnose and treat hearing loss with hearing aids and assistive listening devices. 

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More information

About this clinic

Welcome to Greater Milwaukee Otolaryngology, LLC (GMO). Comprised of seven board certified head and neck surgeons, our physicians provide comprehensive surgical and medical management for all aspects of head and neck disease (ear, nose and throat).

Our expert Doctors of Audiology specialize in the evaluation and treatment of hearing and balance disorders, offering the most advanced digital hearing aids. The physicians of GMO pride themselves on their quality of care and treatment of the most complex of ENT diseases. 

We offer 4 locations to choose from:

4600 W. Loomis Road  Suite #201
Greenfield, WI  

2424 S. 90th St.  Suite #406
West Allis, WI

3111 W. Rawson Ave.  Suite #220
Franklin, WI

16985 W. Bluemound Road
Brookfield, WI


Clinic services

Audiology Services our audiologists provide:

  • diagnose and treat hearing and balance disorders
  • offer the latest in technology in digital hearing aids
  • comprehensive hearing testing
  • accurate evaluation of your hearing
  • wide range of hearing aid varieties including Completely in the Canal
  • hearing aid accessories
  • tinnitus assessment, treatment and counseling

Call us today to schedule your appointment to better hearing. 

Call this clinic today!

(414) 395-8910

Hours of operation

Sunday Closed
Monday Open by appt.
Tuesday Open by appt.
Wednesday Open by appt.
Thursday Open by appt.
Friday Open by appt.
Saturday Closed

Accepted forms of payment

  • Visa
  • MasterCard
  • American Express
  • Discover
  • Cash
  • Check
  • Debit
  • Insurance accepted, please call for details