Suggest an Edit Name* Categories* Doctor Hospital Pharmacy Add category State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 09:00 am — 05:00 pm Tuesday: 09:00 am — 05:00 pm Wednesday: 09:00 am — 05:00 pm Thursday: 09:00 am — 05:00 pm Friday: 09:00 am — 05:00 pm Saturday: 09:00 am — 03:00 pm Company description Dr. Mark Szewczyk located in the city of Waterloo, state Illinois. The legal address of the Doctor 509 Hamacher St. Directions to the Doctor Dr. Mark Szewczyk can be found on our interactive map. Ask your questions by calling (618) 628-0715 on workdays.</br></br></br>NPI number: 1811002066</br>Provider's gender: Male</br>Practice names: ENT & SLEEP Medicine Associates</br>Board certifications: American Board of Otolaryngology Your comments (not for publishing) * — Required information Dr. Mark Szewczyk - Waterloo ← View details 509 Hamacher St, Illinois, Waterloo, 62298, Waterloo, Illinois 62298 (618) 628-0715