Providers

Meet Our Doctors

With six board-certified Utah Gastroenterology specialists and over 100 years of combined experience, Granite Peaks Gastroenterology has the skill, know-how, and capability to diagnose and treat your gastrointestinal problems. Fellowship-trained in gastrointestinal medicine, our GI specialists are adept and experienced with the full array of modern gastrointestinal disorders. Today, our gastroenterology doctors and staff are well-established, highly trusted and known among physicians and patients alike for providing appropriate, top-quality, and effective care for digestive problems.

  • Dr Heiner

    Andrew Heiner, MD

    Dr Heiner

    Andrew Heiner, MD

    Dr Heiner, Board certified gastroenterologist, has practiced GI medicine for more than 20 years. Dr. Heiner’s goal in schooling and practice has remained to provide meaningful help to patients in need. His success in helping individuals find relief and improved quality of life is possible through his belief that every patient who puts their care in his hands should be treated as he would treat a loved one. In his experience, the information he receives from his patients is almost always enough to make an accurate diagnosis. This is where he believes medical excellence and successful care begin.

    Fellowship: Gastroenterology, University of Utah, Salt Lake City, UT
    Residency: Internal Medicine, University of Utah, Salt Lake City, UT
    Internship: Internal Medicine, University of Texas Medical Branch, Galveston, TX
    MD: University of Texas Medical Branch, Galveston, TX
    BS: Brigham Young University, Provo, UT
    Hospital Affiliations: Alta View Hospital, Lone Peak Hospital, Riverton Hospital

  • Professional | Granite Peaks GI

    R. Kyle Barnett, MD

    Professional | Granite Peaks GI
    1. R. Kyle Barnett, MD

    2. Finding a doctor for colonoscopy and more is difficult.  Having practiced for more than 20 years, Board-Certified Gastroenterologist R. Kyle Barnett, MD has helped countless patients find relief and comfort through effective treatment and care. For Dr. Barnett, the most rewarding part of his work is being able to have a positive impact on the way people feel. It is his goal to consistently provide the highest level of care to every patient he treats. Taking the time to fully understand the patient and their needs is an important part of his care routine, as this allows him to build a genuine patient/physician relationship with trust and compassion. From this solid base, the best care outcomes can be achieved, as success depends on both the physician’s and the patient’s personal investments in the treatment process.
    3. Fellowship: Gastroenterology, Scott & White Memorial Hospital, Texas A&M University Health Science Center, Temple, TX
      Residency: Internal Medicine, University of Utah Medical Center, Salt Lake City, UT
      Internship: Internal Medicine, University of Utah Medical Center, Salt Lake City, UT
      MD: Texas Tech University School of Medicine, Lubbock, TX & El Paso, TX
      Undergraduate Study: Biology, Texas Tech University, Lubbock, TX
      Member: American College of Gastroenterology, American Gastroenterological Association, American Society for Gastrointestinal Endoscopy
      Hospital Affiliations: Alta View Hospital, Lone Peak Hospital, Riverton Hospital
  • Chris Cutler Gastroenterologist

    Christopher S. Cutler, MD

    Chris Cutler Gastroenterologist

    Christopher S. Cutler, MD

    Chris Cutler Gastroenterologist believes your digestive health is a vital component of your overall health, comfort, and physical and mental well-being. Whether a patient feels perfectly healthy and visits Chris for a screening colonoscopy or has digestive difficulties, as a Board-Certified Gastroenterologist, he applies his extensive experience, training, and expertise and the most recent advances in the field to a thoughtful assessment and diagnosis of each individual. We will discuss “conventional” medical approaches and complementary “alternative” approaches to determine the best options for you. In many cases — as in colonoscopy screening — early intervention and treatment can prevent the development of disease.

    Chris Cutler Gastroenterologist at Granite Peaks Gastroenterology Sandy Utah, believes Gastroenterology is especially rewarding because his patients benefit from his knowledge, experience, and use of the latest research and technology in this quickly-evolving medical specialty. For his patients with digestive disorders, he can prescribe a course of action which provides immediate relief, often restoring patients to symptom-free, normal lives. It is gratifying for him when, several times each day, patients say to him, “If only I had known the exam (or treatment) would be this easy, I would have made an appointment with you a long time ago.”

    Fellowship: Gastroenterology, Indiana University, Indianapolis, IN
    Residency: Internal Medicine, Northwestern University, Chicago, IL
    Internship: Internal Medicine, Northwestern University, Chicago, IL
    MD: Wayne State University, Detroit, MI
    BS: Psychology, University of Michigan, Ann Arbor, MI
    Hospital Affiliations: Alta View Hospital, Lone Peak Hospital, Riverton Hospital

  • dr desautels

    Steven G. Desautels, MD

    dr desautels

    Steven G. Desautels, MD.

    Dr Desautels was born in Florida and received his B.S. degree in Microbiology and his medical degree at the University of Florida.  Dr Desautels completed his residency in Internal Medicine at the University of Utah where he was awarded both the Intern of the Year and Outstanding Resident Award.  He completed  his specialty training in Gastroenterology and Hepatology at the University of Pittsburgh Medical Center.  His career has been distinguished by awards for excellence in clinical research by the American Society for Gastrointestinal Endoscopy, American College of Gastroenterology and the American College of Physicians. Dr Desautels is a diplomat of the American Board of Internal Medicine in Gastroenterology. Dr. Desautels specializes in esophageal disorders, gastroesophageal reflux disease, cancer of the GI tract, Functional disorders of the GI tract and Therapeutic Endoscopy including ERCP.   He is active on the staff at Alta View Hospital, Riverton Hospital, and Lone Peak Hospital.

    Fellowship: Gastroenterology, University of Pittsburgh, Pittsburgh, PA

    Residency: Internal Medicine, University of Utah, Salt Lake City, UT

    Internship: Internal Medicine, University of Utah, Salt Lake City, UT

    MD: University of Florida, Gainesville, FL
    BS: Microbiology, University of Florida, Gainesville, FL
    Member: American College of Gastroenterology, American Gastroenterological Association
    Hospital Affiliations: Alta View Hospital, Lone Peak Hospital, Riverton Hospital

    Honors & Accolades:

    • Intern of the Year, University of Utah
    • Outstanding Resident Award
    • ACP Regional Scientific Poster Competition (First Place)
    • ACP Merck National Research Award
    • ACG National Research Grant Awardee
    • ASGE Wilson-Cook Advanced Endoscopic Award
    • Pittsburgh Gut Club & Western Pennsylvania Endoscopic Society Abstract
      Competition (First Place)
  • David Schmidt gastroenterology

    David Schmidt, MD

    David Schmidt gastroenterology

    J. David Schmidt, MD 

    Dr. David Schmidt Gastroenterology, commits his work to providing the highest quality of care to every patient. Of course, the accomplishment of this goal relies heavily on skill knowledge, dedication, and ability. However, Dr. Schmidt is also a firm believer that the best care is delivered with a genuine compassion for the patient’s individual needs, overall health, and quality of life. For him, this all begins with listening. This is because it is important for him to fully understand the current situation and how it is affecting the patient.

    Your concerns and sensibilities are intertwined with your gastrointestinal problems, and it’s Dr. Schmidt’s goal to get to the bottom of what’s going on to find a complete solution. Additionally, his true presence and involvement in your care make him the partner you need to get back to what’s important: living and enjoying a comfortable life.

    Fellowship: Gastroenterology, Lakenau Hospital, Wynnewood, PA
    Residency: Internal Medicine, Lakenau Hospital, Wynnewood, PA
    MD: Jefferson Medical College of Thomas Jefferson University, Philadelphia, PA
    BA: Biology, University of Vermont, Burlington, VT
    Member: American College of Gastroenterology, American Gastroenterological Association, American Society for Gastrointestinal Endoscopy, American Medical Association
    Hospital Affiliations: Alta View Hospital, Lone Peak Hospital, Riverton Hospital

  • Gastroenterologist Utah, James M. Stewart, MD

    James M. Stewart, MD

    Gastroenterologist Utah, James M. Stewart, MD

    James M. Stewart, MD

    “I enjoy gastroenterology because of the chance it give me to make a difference in my patient’s lives. I enjoy all aspects of gastroenterology from curing hepatitis C, to managing Crohns disease and Ulcerative colitis and to diagnosing and preventing colon cancer. Gastroenterology encompasses a wide spectrum of diseases and symptoms which encourages me to stay on the forefront of knowledge as new discoveries are made every month. From a personal standpoint, my grandfather died of colorectal cancer that was diagnosed too late. If found at early stages it is curable but he did not undergo a colonoscopy until it was too late when he had symptoms. His life would have been dramatically different had the cancer been found at an earlier stage.

    I grew up in Utah having attended high school, university, and medical school all here in Salt Lake City. It is a wonderful place to live, flourish, and grow. My job is to help my patients maximize their gastrointestinal health so that they can flourish in our beautiful state. Through careful one-on-one discussion and appropriate use of lab testing, radiology, and endoscopy, I will try my best to find the cause of whatever is concerning my patients. Our office is dedicated to promptly answering our patients’ concerns and questions.”

    Undergraduate: University of Utah, BS biology with honors
    Medical School: University of Utah School of Medicine, MD
    Internal Medicine Residency: University of California – San Diego
    Gastroenterology Fellowship: Banner Good Samaritan/Veterans’ Affairs Phoenix, AZ

  • Granite Peaks Gastro

    May Marschner, PA-C

    Granite Peaks Gastro

    May Marschner, PA-C

    Delivering the best possible care at Granite Peaks Gastro, while working with her team of doctors and medical staff, is May Marschner’s goal as a PA-C at Granite Peaks. May believes that taking a step back to look at the big picture is important whenever she sees a patient – as there is often an overlap between gastrointestinal health and other areas of ones health. As a fully trained advanced practitioner in an ever-evolving field, May is sure to keep up on the latest research – making sure her patients at Granite Peaks Gastro know every available option. She sees her own patients in clinic daily and evaluates, treats, and sets up testing /procedures if necessary, while still working closely with Dr. Heiner and Dr. Schmidt and taking care of their patients. She creates individualized treatment plans for each patient and strives to ensure that each patient feels as comfortable as possible while dealing with an “uncomfortable situation.”

    Undergraduate Study: BA, Art (Painting/Digital Video), Rhodes College, Memphis, TN
    Post-Bacc. Study: University of New Orleans, New Orleans, LA
    Graduate Study: Masters, Physician Assistant Studies, University of Utah, Salt Lake City, UT