BEGIN:VCARD VERSION:3.0 FN:Devin Callister\, MD N:Callister;Devin;;;MD TITLE:Infectious Disease Physician TEL;TYPE=WORK,VOICE:+19259472334 URL:https://www.gale.care/providers/ca/walnut-creek/devin-callister-md-1376 856757 NOTE:NPI 1376856757. From the NPPES registry (CMS)\, file of 2026-06-08. No t affiliated with Gale. X-NPI:1376856757 END:VCARD