Dr. Thelen earned his Baccalaureate and Master's Degrees from the University of Wisconsin system and his Doctor of Audiology Degree at the Arizona School of Health Sciences, at A.T.Still University in Mesa, AZ.

Dr. Thelen entered the practice of Audiology in 1980 and after years of co-ownership of a large multi-office private Audiology practice, Dr. Thelen opted for a smaller private practice setting and opened Audiology & Hearing Services Inc in 1988.

Dr. Thelen is dedicated to providing his patients the highest quality professional hearing care, based upon each patient's individual needs. This is achieved through the use of a comprehensive array of diagnostic and rehabilitative services utilizing the most advanced technological instrumentation and training available.

We understand how hearing loss affects your life. To better serve you, Audiology and Hearing Services offers a large selection of hearing aids and the latest technology available through brands like Oticon, GN ReSound, Starkey, and Phonak to name a few.

That is only the beginning... Where we separate ourselves and what has allowed us to serve the local community for the past 32 years, is our commitment to providing the best service to our patients.

• Serving the Fox Valley for 32 years

• Performance guaranteed

• On-site lab for fast repairs

• Trial period on all hearing aids

• Hearing evaluations and screenings

• New patients and referrals welcom

• The largest selection of hearing aids in the Fox Valley

• Call today or email us for a no-obligation consultation!