BEGIN:VCARD VERSION:3.0 FN:William Duff\, MD N:Duff;William;;;MD TITLE:Undersea and Hyperbaric Medicine (Preventive Medicine) Physician TEL;TYPE=WORK,VOICE:+15733022990 URL:https://www.gale.care/providers/mo/osage-beach/william-duff-md-10837239 44 NOTE:NPI 1083723944. From the NPPES registry (CMS)\, file of 2026-06-08. No t affiliated with Gale. X-NPI:1083723944 END:VCARD