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The digestive system is one of the most intricate and sensitive systems in our bodies. It can affect, and be affected by, nearly all of our other systems. At St. Croix Regional Medical Center, our Gastroenterologist is specially trained to help diagnose, treat, and manage care for conditions of the gastrointestinal tract, including the esophagus, stomach, liver, small intestine, large intestine, and anus. We are also committed to providing exceptional primary prevention and screening services to reduce the incidence of colon cancer. Our team is led by Gastroenterologist Dr. Marisa Spencer who is Board Certified in Internal Medicine, Gastroenterology, and Hepatology.

What We Treat

  • Celiac Disease
  • Colitis
  • Crohn’s Disease
  • Hemorrhoids
  • Diverticulitis
  • Constipation
  • Diarrhea
  • Gastroesophageal Reflux Disease
  • Irritable Bowel Syndrome (IBS)
  • Liver Disease
  • Cirrhosis

Digestive Disorder Signs

Symptoms of gastrointestinal disorders differ among individuals. People can experience stomach pain, constipation, indigestion, or diarrhea. Anytime you have a new or unusual symptom, it’s a good idea to schedule an appointment with a primary care doctor so they can refer you to our specialists if needed.


Treatment varies depending on the digestive condition. Here are some of the most common treatment options.

  • Nutrition and Dietary Changes: Some digestive conditions can be improved by making changes to your diet. Your doctor may recommend eating healthier and increasing your exercise to keep your digestive system on track. They may also advise avoiding certain foods that may cause irritation.
  • Medication: There is a wide range of medications and supplements for digestive conditions. There are over-the-counter and prescription medications that may be used to treat digestive conditions. Speak with your doctor to determine what the best treatment options would be for you.

Procedures Offered at St. Croix Regional Medical Center:

  • Colonoscopy
  • Upper Endoscopy
  • Flexible Sigmoidoscopy
  • High Resolution Esophageal Manometry
  • pH Impedance Study
  • Capsule Endoscopy
  • Genetic Testing for Hereditary Colon Cancer Syndromes
  • WATS Biopsies for Barrett's Esophagus
  • Breath Testing for Food Intolerance and SIBO
  • CT Colonography
  • Transit Study

Surgery: In some cases, the best treatment option is surgery. Many procedures can now be done with minimally invasive techniques.

Capsule (Pill Camera) Endoscopy

Flexible Sigmoidoscopy/Flex Sig

Esophagogastroduodenoscopy / EGD

Breath Testing

Bravo™ Reflux Test

Colorectal Cancer Screening

If you are between the ages of 45-75 you should be screened for colorectal cancer. The U.S. Preventive Services Task Force and the CDC has recently lowered the recommended screening age from 50 to 45.

What does this mean for you?

Speak with your doctor about when to begin screening, which test is right for you, and how often to get tested.

Most insurance plans and Medicare help pay for colorectal cancer screenings, please contact your insurance to ensure they are covering this recommended screening beginning at age 45. Colorectal cancer screening tests may be covered by your health insurance policy without a deductible or co-pay.