Home Locations UCHealth Gastroenterology Clinic - Fort Collins

Before visiting someone,
please read our visitation policy to help with the planning of your visit.

Monday: 8am – 5pm
Tuesday: 8am – 5pm
Wednesday: 8am – 5pm
Thursday: 8am – 5pm
Friday: 8am – 5pm
Saturday: Closed
Sunday: Closed
Your team
Michael Nosler, MD
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Paula Shellenbarger, DNP, FNP-C
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Personalized care that exceeds expectations.

Gastroenterologists (also known as “GI doctors”) diagnose and treat patients with a broad range of digestive tract and other conditions such as acid reflux, biliary and pancreatic disorders, esophageal disorders, hemorrhoids, hepatitis B and C, irritable bowel syndrome (IBS), and complicated reflux disease.

UCHealth gastroenterology specialists provide skilled, compassionate care using the latest proven techniques to diagnose and treat a broad range of GI-related conditions.

Our care is focused on the patient. We strive to understand our patients and their problems. And we work to provide the best treatment option for each patient.

If you’re looking for a gastroenterologist near you, it would be our privilege to care for you in our clinic conveniently located near Poudre Valley Hospital.

We look forward to hearing from you to schedule an appointment or answer any questions you have about our providers or services.

Services we provide

Common conditions we treat

  • Acid reflux disease
  • Biliary and pancreatic disorders
    • Bile duct obstruction/cancer
    • Cholangiocarcinoma
    • Chronic pancreatitis
    • Pancreatic cysts
  • Crohn’s disease
  • Duodenal ulcers
  • Esophageal disorders
  • Gallstones
  • Gastroesophageal reflux disease (GERD)
  • Hemorrhoids
  • Hepatitis B & C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative colitis

Common procedures we perform

  • Colonoscopy
  • Endoscopic mucosal resection – aka EMR; removal of superficial tumors or polyps
  • Endoscopic submucosal dissection – like EMR, but a more detailed, and usually reserved for larger or more advanced lesions
  • Endoscopic ultrasound – ultrasound evaluation of internal organs including pancreas, bile duct, etc.
  • Endoscopy
  • ERCP – a procedure to evaluate and treat disease of the bile duct and pancreas
  • POEM (per oral endoscopic myotomy) – treatment of “achalasia,” a common swallowing disorder
  • Single balloon enteroscopy – deep endoscopy into the small bowel, to areas out of reach of typical scopes
  • TIF – (transoral incisionless fundoplication) – an endoscopic “anti-reflux” procedure
About therapeutic endoscopy and endoscopic ultrasound

What is therapeutic endoscopy?

A specially trained doctor uses a flexible tool called an endoscope with a camera, a light and other tools attached to the end. These tools allow the doctor to not only look inside the digestive system of a person’s body but to also treat conditions when/if they are found. Therapeutic endoscopy is the medical term used to describe this type of procedure.

What is endoscopic ultrasound (EUS)?

A very small ultrasound device is placed on the end of an endoscope. During a EUS, a doctor takes ultrasound images and video of the inside of the digestive system. While the video records what is being seen, the ultrasound device uses sound waves to create other images and send them to a video monitor that the doctor and his staff watch. Some endoscopes have a needle at the end. The needle can be used to take small samples of tissue or fluids. The tissue or fluid is then sent to the lab for testing.


Our office participates with many different insurance companies. Because insurance plans, policies and laws often change, please contact your insurance company to see if we are a contracted provider. >> Find insurance and billing information.

Please notify us if you have an insurance plan change, coverage change or insurance loss so we can properly bill your claims in a timely manner.


Questions about your bill?

Please visit UCHealth billing and pricing.

Gastroenterology information

UCHealth offers extensive information specific to gastrointestinal conditions.