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Meet Our Team

Serving Glen Ellyn & Carol Stream since 1982

John Hartman M.S., MBA - Owner of Audiologic Services

John Hartman M.S., MBA

Audiologist | Owner of Audiologic Services

John Hartman is an audiologist and owner of Audiologic Services. He received his Master of Science degree in Audiology from Illinois State University. In addition, he received his MBA from Northern Illinois University.

Prior to owning Audiologic Services, John spent 17 years in clinical and various senior sales leadership and business development roles of leading, global hearing aid manufacturers. His primary responsibilities involved were leading and mentoring sales teams to teach hearing care professionals around the country in the fitting and dispensing of digital hearing aid technology. He also lead a business development team which provided advice to hearing care professionals on how to be successful with their clinics.

In 2016, John received a Distinguished Alumni Award from his alma mater, Illinois State University for the work he has done in the Audiology field. John is excited to be back seeing patients and looks forward to meeting you in one of his clinic locations.

Jeanne Perkins Au.D. - Tinnitus Specialist

Jeanne Perkins Au.D.

Doctor of Audiology | Tinnitus Specialist

Dr. Jeanne Perkins has been a practicing audiologist since 1982. She received her bachelor’s degree at Catholic University of America, Washington, DC; her master’s degree from Western Michigan University, Kalamazoo, Michigan; and her doctorate degree from the Arizona School of Health Sciences, a division of Kirksville College of Osteopathic Medicine, Mesa, Arizona.

She is the former director of audiology at the University of Chicago Hospitals and Chicago Dizziness and Hearing, which is affiliated with Northwestern Memorial Hospital. Her broad scope of knowledge regarding diagnostic testing and available treatment options brings university care to the local level.

Dr. Perkins specializes in vestibular testing and tinnitus treatment and management. While at Chicago Dizziness and Hearing, she developed and implemented new strategies for tinnitus masking. These findings were presented at the National American Academy of Audiology Convention in Chicago of 2011. Dr. Perkins is passionate about educating her patients and the public about hearing, tinnitus, the benefit of hearing aids, and balance issues, especially among the elderly.

She is a fellow member of the American Academy of Audiology, the American Tinnitus Association, the Tinnitus Practitioners Association, and the American Speech-Language-Hearing Association.

Melissa Slavelis - Cochlear Implant Specialist

Melissa Siavelis, M.S., CCC-A

Clinical Audiologist | Cochlear Implant Specialist

Melissa Siavelis, M.S., has been a practicing audiologist since 1995. She earned her bachelor’s degree at Michigan State University with honors and her Master of Science degree from Purdue University with high honors.

Her clinical background includes rehabilitation for hearing loss, single-sided deafness, tinnitus and cochlear implant evaluation, and mapping. She has spoken at the American Academy of Audiology and has authored a series of reference guides covering a range of hearing instruments.

As demonstrated over the course of her career, Melissa is passionate about helping her patients and their families proactively address hearing-related issues. Melissa enjoys doing yoga, pilates, reading for pleasure, walking her dog, and spending time with her husband and two children.

Taylor Bender, Au.D. - Doctor of Audiology
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Taylor Bender, Au.D.

Doctor of Audiology

Taylor Bender received her Doctorate of Audiology from Northern Illinois University in May 2021 and earned her bachelor’s degree in communication science and disorders at University of Nebraska-Lincoln.

Her professional interests include educating patients on hearing loss and amplification needs, tinnitus management, and cochlear implants. She has completed 6 different clinical rotations through her doctoral program in settings such as an ENT, private practices, and National Institute on Aging with school aged children.

Taylor’s passion for audiology began when she witnessed two of her own family members struggle with the effects of untreated hearing loss. When they decided to treat their hearing loss their quality of life increased and were able to participate in family conversations again. This is when Taylor knew she wanted to provide the same experience for other individuals and their families.

Taylor grew up in Naperville, IL and currently resides in the northwest suburbs. In Taylor’s spare time she enjoys reading novels, being active playing sports, as well as spending quality time with her friends, family, and husband.

Taylor is a member of the American Academy of Audiology and is a Licensed Audiologist in the state of Illinois. Taylor is also proud to be a HearingUp approved provider.

Dru Geraghty, M.S.
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Dru Geraghty, M.S.

Clinical Audiologist | Hearing & Vestibular Treatment Specialist

Dru Geraghty has been a practicing audiologist since 1981. She received her bachelor’s degree in Music Education from Millikin University in Decatur, IL, in 1978, and her Master of Science in Audiology from Illinois State University in 1981. She has extensive clinical experience in hearing and vestibular assessment and treatment.

Dru believes in collaborating with patients to development and implement hearing aid and tinnitus solutions that best meet their individual needs. She is a lifelong learner who uses current professional knowledge to provide an exceptional patient experience. Dru believes that developing long lasting, trusting relationships with patients is key to their success with hearing aids.

In her free time, Dru enjoys hiking, cycling, exercise classes, reading, participating in voice and handbell choirs, volunteering at the Northern Illinois Food Bank and Glen Ellyn Food Pantry. She also enjoys spending time with family, friends and her pets.

Professional Affiliations

  • Certified member of the American Speech-Language-Hearing Association
  • Member of the Illinois Academy of Audiology
  • Proud to be a HearingUp Approved Provider 
Sue Vorderer – Hearing Instrument Specialist

Sue Vorderer

Hearing Instrument Specialist

Sue Vorderer graduated from Miami University Oxford, Ohio in 3.5 years with high honors while working through school. She earned her Bachelor of Science degree in Health Sciences with a minor in Gerontology.

Sue is a former pharmaceutical representative which gave her firsthand experience with patients beginning in 1999. While in the field, Sue participated in research studies in the cardiovascular field and was trained in patient care. Her experience in the health care field solidified her passion of helping others maximize their quality of life to the best of patients’ individual abilities.

Following a most rewarding and joyful time at home while her 3 children were young, Sue returned to school where she completed her Hearing Instrument Specialist program with honors and passed her state board exams. She now is a licensed Hearing Instrument Specialist who apprenticed under the excellent team at Audiologic Services.

Sue’s passion for helping others carries over into her personal life as she and her dog, Ginger, have been a volunteer pet therapy team for 2 different organizations since 2016. Sue and Ginger actively visit assisted living facilities, classroom settings often with multineeds students, as well as hospice care. Bringing joy and comfort to others is incredibly rewarding and Sue hopes to continue this service for years to come. In her spare time Sue enjoys spending time with her husband and children as they have together traveled the 48 continental states. Sue also enjoys exercising, reading, gardening, and cooking.

TJ Goebig

TJ Goebig

Hearing Instrument Specialist

TJ was born and raised in New Lenox, IL and graduated from Northern Illinois University in 2006. TJ has 18 years of experience in the hearing industry seeing patients in clinic and working for major hearing aid manufacturers.

He has had hearing loss since he was a child and has been a long-time hearing aid wearer. Hearing care is his passion because he knows first-hand what it is like to live with hearing loss and how the right hearing aids can have such a positive impact on someone’s life.

He was recently married to his wife LeAnn and they have a 16 year old son. They love pets and have 3 cats and 2 dogs. TJ’s hobbies include talking about his wife, his son, and his pets. Ask him to see pictures!

Dr. Megan Kolmodin

Doctor of Audiology

Dr. Megan Kolmodin earned her bachelor’s degree in Speech and Hearing Science at the University of Illinois in Champaign-Urbana and her Doctorate in Audiology at Rush University in Chicago. Dr. Kolmodin has experience working in various settings including private practice, ENT outpatient clinics, and most recently in a large hospital setting at Northwestern Memorial Hospital. From her clinical experiences, she has gained a wide scope of knowledge and skills allowing her to provide well-rounded patient care.

Dr. Kolmodin’s clinical interests include adult amplification, cochlear implants, tinnitus management, and diagnostics. She is passionate about using evidenced-based practices to provide comprehensive patient-centered care. Dr. Kolmodin believes it is important to collaborate with patients and their families in order to best meet their individual needs.

Dr. Kolmodin currently holds the American Speech-Language-Hearing Association Certificate of Clinical Competence (CCC) and is a member on the board of Illinois Academy of Audiology.

Outside of work, Dr. Kolmodin enjoys spending time with her husband and daughter.

Lucky Nanduri, Au.D.

Doctor of Audiology

Dr. Lucky Nanduri received her Bachelor of Science Degree in Speech and Hearing Science with a concentration in Neuroscience of Communication in December 2019 and her Doctor of Audiology from Northwestern University in June 2023. She completed her clinical externship at Torrance Audiology Center located in Torrance, California from 2022-2023 where she focused on comprehensive hearing exams, vestibular evaluations, and hearing aids. Dr. Lucky Nanduri has clinical experience in performing comprehensive hearing exams on patients of all ages, hearing aid fittings, vestibular evaluations, central auditory processing evaluations, tinnitus, and hearing aid programming. In her free time, she loves doing Yoga and pilates. Lucky is a budding traveler and hopes to visit 30 countries under 30! Lucky is passionate about providing hearing education to the masses. She is a Palatine native (a graduate of Fremd High School) and cannot wait to serve members of her own community!

Emily Podgorny, Au.D.

Doctor of Audiology

Emily Podgorny achieved her Doctorate in Audiology in May 2024 and previously obtained her Master’s in Audiology from the University of Tennessee Health Science Center while working through school in May 2022. She earned her Bachelor of Science degree in Audiology and Speech Pathology from the University of Tennessee in 2022. Go vols!

She was born and raised in Nashville, TN and recently moved to Illinois in May of 2023 to be close to her in-laws. She lives in Mokena with her husband and rescue puppy Zody. In her free time, she enjoys painting, thrifting and exploring what Illinois has to offer.

She currently holds the American Speech-Language-Hearing Association Certificate of Clinical Competence (CCC) and is a member of Illinois Academy of Audiology.

Dr. Podgorny specializes in diagnostic testing and hearing aid fittings. In addition to routine audiological testing, she is developing specialties in tinnitus and cochlear implants. She believes every patient has a unique story and she would love to hear yours!

Brendan Moriarty, Au.D.

Doctor of Audiology

Meet Brendan Moriarty, Au.D., your trusted Doctor of Audiology. Graduating with a Bachelor of Arts Degree in Communication Sciences and Disorders from Saint Xavier University in May 2019, Brendan continued his academic journey, earning his Doctor of Audiology from the University of Illinois, Urbana-Champaign in May 2023.

With a wealth of clinical experience under his belt, Dr. Moriarty specializes in conducting thorough examinations for patients of all ages, fitting hearing aids, performing repairs, and conducting central auditory processing evaluations and treatments. His professional journey has seen him in diverse office settings, from private practices to ENT clinics and hearing aid research facilities.

Driven by a deep-seated passion for improving the lives of his patients and their families, Brendan is dedicated to providing tailored care that addresses their unique needs. Beyond his professional endeavors, he finds joy in pursuits like golfing, fishing, and cherishing moments with his loved ones, including his loyal canine companion, Ollie.

Kathy Dorjath – Patient Care Coordinator

Kathy Dorjath

Patient Care Coordinator


Maxine Reynolds

Patient Care Coordinator

Call us: (630) 283-6482
What our patients are saying
Audiologic Services – Audiologist