Dr. Seneczko grew up in suburban Chicago, receiving her undergraduate education at the University of Illinois - Chicago Campus. After completing her general dentistry degree at Northwestern University in Chicago in 1986, Dr. Seneczko completed a general practice residency at Michael Reese Hospital in Chicago.

Upon completion of her residency in 1987, Dr. Seneczko became a Clinical Assistant Professor in the Department of Removable Prosthodontics at Northwestern University Dental School, where she taught for five years until the birth of her daughter in 1992.

In September 1988, Dr. Seneczko established Seneczko Dentistry in Arlington Heights. In 2003, the practice was moved to its current location at 314 South Arlington Heights Road in the downtown district of Arlington Heights.

When not practicing dentistry, Dr. Seneczko enjoys spending time with her husband, their daughter, and their two sons.