Patient Portal. Login; Pre-Registration; Contact; Select Page. ... Sun Pediatrics Marietta. 2520 Windy Hill Rd SE #104 Marietta, GA 30067. Phone: (678) 501-5601. Sun Pediatrics East Cobb. 1230 Johnson Ferry PL A10 Marietta, GA 30068. Phone: (678) 501-5601. Office Hours. Monday 8 AM - 5 PM.