BEGIN:VCARD VERSION:3.0 FN:Mark Riddle\, MD N:Riddle;Mark;;;MD TITLE:Child & Adolescent Psychiatrist TEL;TYPE=WORK,VOICE:+14108372050 URL:https://www.gale.care/providers/md/columbia/mark-riddle-md-1316989304 NOTE:NPI 1316989304. From the NPPES registry (CMS)\, file of 2026-06-08. No t affiliated with Gale. X-NPI:1316989304 END:VCARD