International Expert

Specializes in minimally invasive endoscopy using gastroscopy, colonoscopy, endoscopic mucosal resection, endoscopic ultrasound, ERCP and spyglass

Gut Health

Take the first step to a healthier you. I can help you improve your gut function with comprehensive consultation, investigations and treatments.

Integrated care

My philosophy is to empower you with knowledge about your condition, find the underlying cause and improve your quality of life with medical, natural or dietary treatments.

Auckland's Top Gastroenterologist and Endoscopist

Services Offered

We offer a large range of services across multiple sites. Some of these services we offer are:


A clinic visit is the best way to get a better understanding about your condition. After relevant investigations a treatment plan can be implemented and followed up to ensure your health is improving


Dr Marius offer a range endoscopy services through Waitemata Endoscopy. Which include gastroscopy, colonoscopy and endoscopic ultrasound,  as well as a range of therapeutic options such as polypectomy, EMR, FNA and many more.


Gastro Oesophageal Reflux Disease (GORD) is a very common condition. Although proton pump inhibitors (PPI's) can improve your symptoms, they mask the problem instead of treating the underlying problem.  .

Bowel Cancer

Worried about bowel cancer? The symptoms can be very subtle and tests such as stool based bowel screening only picks up 60% of cancers. Colonoscopy is the best way to find and prevent bowel cancer

Self funded endoscopy

Public waiting list are unfortunately very long. You can self fund your own procedures and take back control over your own health. Prices start around 1,200 NZD for a gastroscopy

Endoscopic Ultrasound

EUS is the most accurate way to find gallstones. Up to 30% of patients with gallstone symptoms with a normal CT/MRI/ultrasound have stones that the other scans have missed.

About Dr Marius

Welcome to the website of Dr. Marius Van Rijnsoever, a highly skilled gastroenterologist based in Auckland, New Zealand. Dr. Van Rijnsoever is dedicated to providing personalized and compassionate care to all his patients. With years of experience and expertise in gastroenterology, he is committed to offering the latest in diagnostic and treatment options for digestive disorders. Dr. Van Rijnsoever's approach to patient care is centered around communication, collaboration, and individualized care. He understands that each patient is unique, and his goal is to provide the best possible care to meet their individual needs. Whether you are seeking treatment for a specific digestive issue or need a routine colonoscopy, Dr. Van Rijnsoever and his team are here to help. Browse our website to learn more about our services and to schedule an appointment today.