Home › Top 4 Obstetrician-gynecologist in Grayslake, Illinois Find best Obstetrician-gynecologist in Grayslake, Illinois, with all necessary contact information, including addresses, phone numbers, working hours, map locations, and website links. Maria C Horvat MD US, Grayslake, IL 600301475 E Belvidere Rd Westmoreland ObGyn Associates US, Grayslake, IL 60030Pavilion A, 1475 E Belvidere Rd Suite 316 Lake Forest Obstetrics: Oshin Leslie MD US, Grayslake, IL 600301475 E Belvidere Rd # 313 Heather Heiberger, MD, FACOG - Grayslake (IL 60030) US, Grayslake, IL 600301475 E. Belvidere Road Pavillion A, Suite 302