Hearing Professionals of Illinois - Libertyville

"For all of your hearing healthcare needs, we are "hear" for you!"
Call: (847) 410-1369
1900 Hollister Dr Ste 220 Libertyville, IL 60048
Clinic website

Clinic staff


Merle Nathan

Director of Audiology, AuD, CCC-A

Merle Nathan is the Director of Audiology at Audiological Laboratories. She oversees a team of dedicated professional audiologists.

She earned both her Master of Arts degree in Audiology and her Bachelor of Science degree in Speech and Hearing Science from the University of Illinois at Urbana-Champaign and has been a practicing Audiologist since 1987.
She is a fellow of the American Academy of Audiology (AAA) and holds a Certificate of Clinical Competence in Audiology (CCC-A) from the American Speech-Language-Hearing Association (ASHA). Merle is licensed to practice Audiology in the state of Illinois.

Jeanmarie Carone


Jean has been practicing audiology for more than 30 years. She attended Northern Illinois University for both her B.A. in Speech Pathology and Audiology and her M.A. in Audiology. She has worked for the Illinois Department of Public Health, was head of audiology at Oak Forest Hospital, owned her own private practice, and worked as a contractual audiologist. She joined Audiological Laboratory in 2011. 


Susan Harris

Au.D., CCC-A

Susan joined the Audiological Laboratory team in 2009. She completed a post-Master’s fellowship at the University of Maryland’s Shock Trauma Center. Susan’s education began at Towson State University where she received her B.S. in Communication Sciences and Disorders. From there she went on to the University of North Carolina at Chapel Hill where she earned her M.S. in Audiology. She completed her Doctorate of Audiology at the Pennsylvania College of Optometry’s School of Audiology and has been practicing in the field for over 20 years. 


Julie Landgraf

Au.D., CCC-A

Julie joined Audiological Laboratory in 2007 after working at John H. Stroger, Jr. Hospital. She received both her B.S. in Speech and Hearing Science and her M.A. in Audiology from the University of Illinois and went on to earn her Doctorate in Audiology from the University of Florida. 


Sivan Blonz


After earning her B.S. in Communicative Disorders from Northern Illinois University, receiving the Phillip Morris In-College Scholarship and joining the Golden Key National Honor society, Sivan went on to earn her M.S. in Audiology from Rush University. She has been with Audiological Laboratory since 1999. Sivan previously worked with the Audio-Vestibular Association, Hines Veterans Hospital, and the DuPage-West Cook Regional Special Education Association. 


Lindsey Portugal

Au.D., CCC-A

Lindsey joined Audiological Laboratory in 2011 after working at Chicago Otolaryngology Associates at Mercy Hospital, Resurrection Medical Center and the Ear, Nose and Throat Center at Lutheran General Hospital. She earned both her B.S. in Speech Pathology and Audiology and her Doctorate in Audiology from Illinois State University.

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About this clinic

At Hearing Professionals of Illinois, (formerly Audiological Laboratory, Ltd.), we believe in a team approach to patient care. We stress patient education to ensure understanding and informed decision making.  We have access to all major hearing instrument company in order to provide a wide range of options for each individual.  Our staff is there to provide technical skills, but also to lend the emotional support necessary for our patients to achieve success.

We have six local offices for your convenience:

Golf Western Professional Building
8780 West Golf Road
Suite 200
Niles, Illinois 60717

Old Orchard Professional Building
4905 Old Orchard Center
Suite 630
Skokie, Illinois 60077

Hawthorn Health Center
1900 Hollister Drive
Suite 220
Libertyville, Illinois 60048

Highland Park Hospital Professional Building
767 Park Avenue West
Suite 220
Highland Park, Illinois, 60035

Glenbrook Hospital Medical Office Building
2150 Pfingsten Road
Suite 2270
Glenview, Illinois 60026

Lake Shore Place
680 N. Lake Shore Drive, Suite 1207
Chicago, IL 60611

Clinic services

  • Hearing evaluations for adults and children
  • Hearing aid consultations and fittings
  • Hearing aid service, programming, repair and accessories
  • Assistive Listening Devices
  • Custom earmolds and micromolds
  • Custom earplugs for swimmers and musicians
  • Custom noise protection

Call this clinic today!

Hours of operation

Monday 8:30 am - 4:30 pm
Tuesday 8:30 am - 4:30 pm
Wednesday 8:30 am - 4:30 pm
Thursday 8:30 am - 4:30 pm
Friday 8:30 am - 4:30 pm

Accepted forms of payment

  • Visa
  • MasterCard
  • Discover
  • Cash
  • Check
  • Debit
Disclaimer: This clinic profile is for general information purposes only. Financial aid and insurance coverage can vary widely by policy and should be verified with the provider before services are rendered.