Hearing Professionals of Illinois - Libertyville

Merle Nathan is the Director of Audiology at Audiological Laboratories. She oversees a team of dedicated professional audiologists. Dr. Nathan earned a Bachelor’s degree in Speech and Hearing Science and a Master’s degree in from the University of Illinois and has been a practicing Audiologist since 1987. She holds a certificate of clinical competence in audiology from the American Speech Language Hearing Association and is a fellow of the American Academy of Audiology.

Dr. Jean Carone is a licensed audiologist who earned a Bachelor’s degree in Speech Pathology and Audiology and her Master’s degree in audiology from Northern Illinois University and has been practicing audiology for nearly 4 decades. Dr. Carone gained experience working in a variety of clinical settings including owning her own practice before she joined our team in 2011. She holds a certificate of clinical competence in audiology from the American Speech Language Hearing Association and is a fellow of the American Academy of Audiology.

Dr. Susan Harris is a licensed audiologist who earned a bachelor’s degree from Towson State University, a master’s degree from the University of North Carolina and a Doctorate in audiology from the Pennsylvania College of Optometry’s School of Audiology.  Dr. Harris worked in a variety of clinical settings before she joined our team in 2009. She holds a certificate of clinical competence in audiology from the American Speech Language Hearing Association and is a fellow of the American Academy of Audiology.

Dr. Julie Landgraf is a licensed audiologist who earned her Doctorate in audiology from the University of Florida, a master’s and bachelor’s degree from the University of Illinois. She joined our team in 2007 after helping the patients at John H. Stroger, Jr Hospital of Cook County. Dr. Landgraf holds a certificate of clinical competence in audiology from the American Speech Language Hearing Association and is a fellow of the American Academy of Audiology. 

Dr. Sivan Blonz is a licensed audiologist who earned a Bachelor’s degree in Communicative Disorders and a Master’s degree in Audiology from Rush University. She worked in a variety of clinical settings before joining our team in 2000. Dr. Blonz holds a certificate of clinical competence in audiology from the American Speech Language Hearing Association and is knowledgeable in the latest technology in hearing aids and devices.

Dr. Lindsay Portugal joined our team in 2011. She earned a Bachelor’s degree in Speech Pathology and Audiology as well as her Doctorate in Audiology from Illinois State University. Dr. Portugal gained experience working at Mercy Hospital and Lutheran General Hospital. She holds a certificate of clinical competence in audiology from the American Speech Language Hearing Association and is a fellow of the American Academy of Audiology.