BEGIN:VCARD VERSION:3.0 FN:Billy Loo\, MD\, PhD N:Loo;Billy;;;MD\, PhD TITLE:Radiation Oncology Physician TEL;TYPE=WORK,VOICE:+16507367143 URL:https://www.gale.care/providers/ca/stanford/billy-loo-md-phd-1720167711 NOTE:NPI 1720167711. From the NPPES registry (CMS)\, file of 2026-06-08. No t affiliated with Gale. X-NPI:1720167711 END:VCARD