BEGIN:VCARD VERSION:3.0 FN:Gregory Mumm\, MD N:Mumm;Gregory;;;MD TITLE:Rheumatology Physician TEL;TYPE=WORK,VOICE:+16055041600 URL:https://www.gale.care/providers/sd/sioux-falls/gregory-mumm-md-15482288 10 NOTE:NPI 1548228810. From the NPPES registry (CMS)\, file of 2026-06-08. No t affiliated with Gale. X-NPI:1548228810 END:VCARD