BEGIN:VCARD VERSION:3.0 FN:Katherine Exten\, MD N:Exten;Katherine;;;MD TITLE:Hematology & Oncology Physician TEL;TYPE=WORK,VOICE:+14197562003 URL:https://www.gale.care/providers/oh/mansfield/katherine-exten-md-1982996 237 NOTE:NPI 1982996237. From the NPPES registry (CMS)\, file of 2026-06-08. No t affiliated with Gale. X-NPI:1982996237 END:VCARD