Medical practice



In February 2013, the practice was opened at Buchserstrasse in Aarau as a solo practice by Dr Riniker. After the gastroenterologist Anne Oberle joined the team in 2017 and the radiologist Dr Beat Rehmann in 2019, the old rooms became too small.

Since September 2019, we welcome you in our new practice rooms at Wiesenstrasse 25 (vis a vis the old location). The large, modernly furnished practice is located on the ground floor, is wheelchair-accessible, easily accessible by public transport and technically state-of-the-art. Sufficient parking spaces are available in the underground car park.

In March 2022, our team was strengthened with the experienced gastroenterologist Dr. Irene Guldenschuh. After a year in Olten, Dr. Susanne Flückiger finally returned to our practice in June 2024.

Since Prof. Straumann in Olten left the practice in 2017 and Dr. van den Brandt in Aarau in 2018, we have been happy to take care of the gastroenterological continuing care of the former patients of these esteemed colleagues. The examination reports of Dr van den Brandt can be requested from us.

Registrations are gladly accepted by phone, mail or email. For emergency appointments, please contact us by telephone.

I look forward to welcoming you as a guest or patient in my practice.

Florian Riniker, MD, practice owner

Our physicians

Florian Riniker

Florian Riniker, MD

Specialist FMH for Gastroenterology and General Internal Medicine

Practice founder/owner, medical director
Specialised in proctology and chronic inflammatory bowel diseases

Curriculum vitae
Anne Oberle

Anne Oberle, MP

Specialist (D) for gastroenterology and general internal medicine

Since 11/2017 in our practice
Since 11/2021 Part-time senior physician in hepatology at the Cantonal Hospital Lucerne
Specialised in liver diseases

Curriculum vitae
Beat Rehmann

Beat Rehmann, MD

Specialist FMH for Medical Radiology

Since 09/2019 part-time in our practice, prior to that many years of work at the Röntgeninstitut Aarau
Specialist for ultrasound examinations of hernias, vessels, organs and soft tissues

Irene Guldenschuh

Irene Guldenschuh, MD

Specialist FMH for gastroenterology and internal medicine

In our practice since 03/2022

Curriculum vitae

Susanne Flückiger, MD

Specialist FMH for Gastroenterology

Back in our practice since 03/2022
Specialised in functional diagnostics


Our collegues

Esther Hochuli

Esther Hochuli


Marliese Hochuli

Marliese Loosli

Secretariat / Medical Practice Assistant

Katja Wiedmer

Katja Wiedmer

Secretariat / Nursing Specialist HF

Tanja Zwyssig

Tanja Zwyssig

Secretariat / Nursing Specialist HF

Susi Schinkopf

Susi Schinkopf

Nursing Specialist DN II

Alexandra Nussbaum

Alexandra Nussbaum

Nursing specialist HF

Anna Gafner

Anna Gafner

Nursing Specialist DN II

Ursula Köchli

Pflegefachfrau DN I

Gowri Nanthan

Nursing assistant

Christin Temperli

Head of HR/Finance

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