NOW OPEN! OB/GYN Associates of Sewickley Rebecca Welch, MD Heritage Valley Health System announces a new Obstetrics & Gynecology practice located onsite at Heritage Valley Sewickley. - Comprehensive Gynecology & Obstetric Care - Accepting New Patients OB/GYN ASSOCIATES OF SEWICKLEY - Convenient Location To schedule an appointment, Heritage Valley Sewickley 720 Blackburn Road, First Floor Sewickley, PA 15143 call 412-749-8317. Wenjun Zong, MD, PhD HeritageValley.org Download our App in O NOW OPEN! OB/GYN Associates of Sewickley Rebecca Welch, MD Heritage Valley Health System announces a new Obstetrics & Gynecology practice located onsite at Heritage Valley Sewickley. - Comprehensive Gynecology & Obstetric Care - Accepting New Patients OB/GYN ASSOCIATES OF SEWICKLEY - Convenient Location To schedule an appointment, Heritage Valley Sewickley 720 Blackburn Road, First Floor Sewickley, PA 15143 call 412-749-8317. Wenjun Zong, MD, PhD HeritageValley.org Download our App in O