Family 1st Dental of Onawa 909 Iowa Avenue, Onawa, IA 51040 Phone: (712) 433-3937 Doctors:Sheila Duarte, DDSSoni Gelinne, DDS Business Hours Mon: 9:00am - 5:00pm Tue: 9:00am - 5:00pm Wed: 9:00am - 5:00pm Thu: 12:00pm - 7:00pm Fri: Closed Sat: Closed Sun: Closed Visit our Website Like Us On Facebook Get Directions Business Map Click below to view larger map. 'GREEN' Family 1st Dental of Onawa 909 Iowa Avenue Onawa, IA 51040 (712) 433-3937 Doctors:Sheila Duarte, DDSSoni Gelinne, DDS