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  • Dr. Erhart and Dr. Heer holding a tablet

    Hand in hand – for our patients’ health

Our referral philosophy

We know that great things can only be achieved together! Which is why we place great value on collaboration – and not only within our team – interdisciplinary collaboration is also important! We enjoy collaborating with family doctors, pathologists, radiologists, surgeons, rheumatologists, dermatologists and ophthalmologists and always do everything possible for the health of our patients. Dr. Erhart and Dr. Heer offer their extensive clinical and practice experience for the best-possible medical care and expert consultation.

Your patients are in excellent hands

The well-being of your patient is our top priority. We are your partner in the full range of gastroenterology services in Olten – from gastroscopy, colonoscopy, rectoscopy/proctoscopy, capsule endoscopy, endoscopic ultrasound, ultrasound, Fibroscan, pH testing, hydrogen breath testing, endoscopic retrograde cholangiopancreatography to hepatology. You can find detailed information on our wide range of services here.

Range of services

Modern methods

In our practice we work with modern technology and digitalised processes – to maintain the highest scientific and medical standards. New and modern premises come as standard and you’ll find the latest technical equipment in our treatment rooms, for example:

  • State-of-the-art endoscopy equipment/processors from Pentax (2022 generation)
  • State-of-the-art ultrasound from Hitachi Arrietta 850
  • Latest generation Fibroscan: FibroScan 530 M +
  • State-of-the-art capsule endoscopy: ANX Robotica NaviCam capsule
  • Cutting-edge ERBE electrosurgical equipment with argon plasma VIO 3
  • Cutting-edge RDG-E pass through (Wasserburg) for safe cleaning and disinfection
  • Equipment drying using the new Plasma TYPHOON system from Pentax

Our certifications 

For a strong, supportive partner!

Quality by Hospital Partners

Quality by Hospital Partners

We maintain an effective quality management system according to the current regulatory requirements and ensure this complies with the medical device regulation and the latest applicable hygiene standards. Olten Gastroenterology practice is inspected and certified by hospital partners for quality and hygiene.


Our staff are specifically certified in the reprocessing of endoscopes, in accordance with the Swiss guidelines on reprocessing flexible endoscopes SGG, SGP, SGHS and SVEP and Swissmedic specifications.

DKG German Cancer Society certificate

We are a cooperation partner of the German Colorectal Cancer Center

Olten Gastroenterology practice is recognised by the German Hospital Federation (DKG) and is certified as a cooperating gastroenterology practice for the treatment of patients with colorectal cancer.

Privacy certificate

Privacy certificate

Protecting your sensitive, personal data and intellectual property is our top priority. This is why we decided to conduct a thorough risk assessment to identify potential threats, weaknesses, establish the impact on information assets, and develop a policy to put our security practices to the test. This means that we can guarantee the safety of your data and have received our privacy certificate.

Any more questions?

Would you like to have a direct discussion with Dr. Erhart?  
Please get in touch directly at

To look at our patient forms please visit our service area. 

Service area

062 287 80 60