BEGIN:VCARD VERSION:3.0 FN:Ryan Chang N:Chang;Ryan;;; TITLE:Medical Oncology Physician TEL;TYPE=WORK,VOICE:+14155147520 URL:https://www.gale.care/providers/ca/san-mateo/ryan-chang-1164985263 NOTE:NPI 1164985263. From the NPPES registry (CMS)\, file of 2026-06-08. No t affiliated with Gale. X-NPI:1164985263 END:VCARD