Supporting our mission provides infants, children, teens, and adults with the speech and hearing help they need when financial resources are limited.

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Meet Our Audiologists


Christine E. Bartelt, Au.D.
Romeoville office | 630-633-5060 | Email Dr. Bartelt

My route to audiology was circuitous. A college start in physiology with an enthusiastic membership in marching band led me to a band alumna from whom I learned about my future degree, Speech, Language and Hearing Sciences. I loved the sciences enough to minor in chemistry, but I wanted to work with people, so I switched programs and became interested in speech pathology. Fast forward to applying to graduate schools in speech pathology, where an insightful committee head noted that my packet was a good match for audiology! Several tours and conversations later, I committed to a doctorate in audiology at the University of Arizona.

I enjoy working with patients of all ages, although working with children is particularly rewarding. Outside the office, I love to be outdoors, be it running, hiking, biking, camping or a picnic at the park. I am frequently joined in these activities by my spouse Jess and our son, Kai.


Sean P. Flowers, Au.D., FAAA
Palos Hills office | 708-599-9500| Email Dr. Flowers

I started my undergraduate career at Marquette University as a Biomedical Engineering major, however, I desired to work more with patients. As someone who has hearing loss and wears a hearing aid myself I decided to become an audiologist and received my doctoral degree from Northwestern University. I believe my own experiences with hearing loss and hearing aids, in conjunction with the knowledge gained from Northwestern, allowed me a unique perspective into the needs of my patients and has allowed me to provide better patient care.

Aside from diagnosing and treating hearing loss in adults and children, I also have a passion evaluating and treating patients with tinnitus (ringing or buzzing in the ears).
I truly enjoy being a part of the Sertoma team. It is a great atmosphere to work. Proper patient care is of the upmost importance and we understand that no two patients are the same.


Jennifer Gagesch, Au.D.
Palos Hills office | 708-599-9500 | Email Dr. Gagesch 

“I grew up with audiology. My ‘first’ experience with it was when my mother, in graduate school to become an audiologist herself, was pregnant and learning to test hearing. It must have made an impression because years later, after a short stint as a rehabilitation counselor, I went back to school for audiology. I received my Master of Arts degree in Audiology from Northwestern University, followed later with my Doctor of Audiology (Au.D) degree from Salus University. I enjoy working with people of all ages, with specific interests in diagnostic testing, dispensing of hearing instruments, hearing conservation (particularly for musicians and those that enjoy music), and auditory processing. At home I enjoy spending time with my family (husband, two daughters, son, and a very stubborn dog), running, bicycling, reading, and listening to music.”

"We were very impressed with Dr. Gagesch and everything at the Center. I will recommend Sertoma to all in need with hearing loss." —D. Suchy

"I write to commend Jennifer's professionalism and thorough approach to her work.  I so appreciated the time she took to understand my hearing loss, patient history and personal hearing needs.  I was also impressed with how she mentored Michelle on technique and how she drew her into the process of testing.  

I am very grateful to be in Jennifer's most capable hands for decisions concerning my choice of hearing aids. Please feel free to share this correspondence with others who might be interested." —Diane A. King


Nicole N. Kreps, Au.D.
Palos Hills office | 708-599-9500 | Email Dr. Kreps

Dr. Nicole N. Kreps is a state licensed, nationally accredited doctor of Audiology.  She completed her training at a variety of healthcare facilities:  Children’s Memorial Hospital in Chicago, Illinois, MacNeal Hospital in Berwyn, Illinois, St. John’s Mercy Medical Center in St. Louis, Missouri, Central Institute for the Deaf Schools in St. Louis, Missouri and Ear, Head and Neck Specialists, in Florissant, Missouri.

Dr. Kreps has a diverse background including general hearing/balance testing, intraoperative monitoring, hearing aid/cochlear implant services, educational/industrial audiology, and assistive listening devices.  She has worked with patients across all ages and backgrounds.  Her approach to patient care is to view the patient as a whole, ensuring that through a thorough case history and comprehensive testing, an appropriate treatment approach is found unique to each patient, addressing all patient concerns, as well as hearing and balance issues.  


  • University of Illinois, Champaign-Urbana, Illinois - Bachelor of Science
  • Central Institute for the Deaf at Washington University, St. Louis, MO - Master of Science
  • Arizona School of Health Sciences, Mesa AZ - Doctor of Audiology


Tom Wardzala, Au.D.
Palos Hills office | 708-599-9500 | Email Dr. Wardzala 

"The physics of sound, the anatomy, and the physiology of the ear are incredibly interesting. Throw in a healthy interest in computers and the fitting digital-hearing instruments — audiology is a perfect fit for me. 

The best part of being an audiologist is being able to help people communicate in their everyday lives. Whether it's a child in school or an elderly patient, hearing is essential to communicating with others, and the work we do here at The Speech and Hearing Center helps others with this.

My real specialty is fitting advanced technology on patients, especially children.

I've been an audiologist since 1994.  My first few years in practice were at St. Mary of Nazareth Hospital in Chicago. I then was a Senior Audiologist at the University of Chicago Hospitals for 7 years. I worked at a private practice in downtown Chicago for almost three years before I came back to working in a non-profit environment.

I have a wife Holly and a 5 year old daughter, Sofia.

I received my M.A. in Audiology in 1994 from Northwestern University. After a number of years of practice, I returned to school and received my Au.D. from the Arizona School of Health Sciences in 2009. 


Christina Woodall, M.S., CCC-A
Romeoville office | 630-633-5060 | Email Christy Woodall 

"I made the decision to be an audiologist in the 8th grade when an audiologist visited my science class and described her profession. I received my Bachelors and Master of Science degree in Audiology from Radford University in Radford, Virginia. After working for five years, I gave birth to my second daughter, who was born with profound hearing loss in both ears. Today, I have five daughters, two with profound hearing loss. I'm a busy mom, very active with my kids' sports and activities, and as you can imagine, I have developed a love and devotion to pediatric audiology."