Our Physicians


Ketan Shah, M.D.

A dedicated and energetic physician, Dr. Shah is a board certified otolaryngologist and sleep specialist who enjoys caring for patients of all ages. Dr. Shah’s clinical interests include treatment of allergic and sinus disease, pediatric disorders, skin malignancies, hearing loss, ear infections, and various sleep disorders.

Dr. Shah received his medical degree from the University of Medicine and Dentistry of New Jersey (UMDNJ). Upon completion of his medical degree, Dr. Shah stayed at UMDNJ and completed his internship and residency. He earned his board certification in April of 2000 and has been in practice since that point.

In 2007, Dr. Shah further advanced his education and become one of the first American Board of Medical Specialties certified sleep specialist within the field of otolaryngology. Throughout his career he has maintained an active role in the advancement and promotion of the specialty by participating in various teaching and research opportunities.

Dr. Shah is a member of the American Academy of Otolaryngology, American Board of Otolaryngology, and American Academy of Sleep Medicine. His current affiliations include Memorial Hospital, St. Elizabeth’s Hospital, Monroe County Surgical Center, and Bel-Clair Surgical Center.



Mark Szewczyk, M.D.

Dr. Szewczyk was born and raised in Belleville, Illinois and is thrilled to practice in Southern Illinois. He obtained a bachelor’s degree from the University of Notre Dame, where he graduated with high honors and was elected into the Phi Beta Kappa Society. He then completed medical school at Northwestern University, being elected into the Alpha Omega Honor Medical Society. Outstanding clinical training was then obtained through a general surgery internship and otolaryngologist residency at Kansas University Medical Center. He obtained board certification from the American Board of Otolaryngology and has since used his education, training and valuable clinical experience practicing general otolaryngology since 1998.

Dr. Szewczyk takes great pride in using the knowledge gained through education, training, experience and the most up to date literature and techniques to collaborate with patients in determining the best course of action in their care. He feels a great responsibility to educate patients so that they can make the best informed decision possible for individualized treatment. He provides superior medical care and state of the art surgical techniques when necessary.

While always providing a complete general otolaryngology practice for patients of all ages, Dr. Szewczyk has particular clinical interests in helping pediatric otolaryngology problems, sinus and allergy disease and surgical management of snoring and Obstructive Sleep Apnea. His current affiliations include Memorial Hospital, St. Elizabeth’s Hospital and Monroe County Surgical Center. He maintains office hours in both the Shiloh and Waterloo clinics.

To learn about our practice, please contact us at 618-628-0715
Serving the O'Fallon, Waterloo, Edwardsville, Maryville, Swansea and Belleville Areas.