Go back to directory. Add to Address Book. Cary Pediatric Center – Apex Cary Pediatric Center – Apex 1021 W.Williams St Ste.105 Apex NC 27502 work Office Phone: 919-290-1090work Office Fax: 919-290-1086workfax Website: Cary Pediatric Center – Apex Website: Get Directions Categories: Pediatrics Updated 1 day ago.