Dr. med. Tom Völler 

Dr. med. Tom Völler

From 2025

Private practitioner at Gastroklinik AG

2022 – 2025

Aarau Cantonal Hospital, Gastroenterology and Hepatology

2020 – 2022

University Hospital Zurich, Department of General Internal Medicine

2019 – 2020

Lachen Hospital AG, General Internal Medicine

2016 – 2019

Research on gut bacteria at the Swiss Federal Institute of Technology (ETH), funded by a scholarship from the German Research Foundation (DFG)

2016

Doctoral thesis at Westfälische Wilhelms University Münster (WWU), Dissertation and Doctoral Award for the best thesis in the faculty and university

2009 – 2016

Medical studies at WWU Münster (Germany) and UCL London (UK)

Core Competencies

• Colorectal cancer screening (colonoscopy and polypectomy)
• Chronic inflammatory bowel diseases (Crohn’s disease and ulcerative colitis, intestinal ultrasound, therapy selection support with on-site infusion services)
• Proctological consultations and treatments (hemorrhoids, marisectomy, anal vein thrombosis)
• Diagnostics for reflux symptoms (gastroscopy and pH-metry) and swallowing disorders (esophageal manometry and EndoFLIP)
• Evaluation of irregular bowel movements and abdominal pain
• Dilation and bougienage of strictures/narrowings in the upper and lower gastrointestinal tract

Additional Expertise

• Endosonography of lesions in the upper and lower GI tract
• Abdominal ultrasound for liver diseases, fatty liver
• Tumor diagnostics (ultrasound, endosonography, gastroscopy, colonoscopy, CT, PET-CT, MRI, preventive check-ups)
• Second opinions, especially for tumor patients

Memberships & Partnerships

• Swiss Society of Gastroenterology (SGGSSG)
• Swiss Network on Inflammatory Bowel Disease (IBDnet)
• The Swiss Neurogastro-Motility Network (SwissNGM)
• Swiss Society for Ultrasound in Medicine (SGUM/SSUM)
• Swiss Medical Association (FMH)
• Association of Swiss Assistant and Senior Hospital Doctors (VSAO)