UCHealth Gastroenterology Clinic - Lone Tree

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

Monday: 8am – 4:30pm
Tuesday: 8am – 4:30pm
Wednesday: 8am – 4:30pm
Thursday: 8am – 4:30pm
Friday: 8am – 4:30pm
Saturday: Closed
Sunday: Closed
Your team
Gregory Austin, MD
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Elijah Mun, MD
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Andy Mengshol, MD
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Kristy Severson, CNP
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Ben Cassell, MD
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Personalized care that exceeds expectations.

A gastroenterologist (a “GI doctor”) diagnoses and treats patients with a broad range of digestive tract and other conditions such as acid reflux, biliary and pancreatic disorders, esophageal disorders, stomach disorders, small bowel disorders, irritable bowel syndrome (IBS), and inflammatory bowel disease (IBD).

UCHealth board-certified gastroenterology specialists in Lone Tree provide skilled, compassionate care using the latest proven techniques to diagnose and treat a broad range of 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 on the Lone Tree Medical Center campus.

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


Please call our office to schedule your appointment.

Please provide all the following information at your scheduled appointment:

  • Photo ID
  • Insurance card
  • Referral (if needed)

To allow enough time to complete your check-in process, please arrive 15 minutes before your scheduled appointment.

We request 24-hour advance notice if you cannot make it to your scheduled appointment. If you have young children who will be accompanying you to your appointment, please try to bring another adult with you to sit with the children during your time.

Have questions? Give us a call!