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Gastroenterology


Gastroenterology is the field of medicine that specializes in treating diseases of the digestive tract (esophagus and stomach), the gallbladder and biliary tract, pancreas, liver and large intestine (colon and rectum). Common symptoms associated with gastroenterology conditions include, but are not limited to, abdominal pain, bloating, diarrhea, constipation, bleeding from the digestive tract, regurgitation, and difficulty swallowing.

Meet Our Team

At Dignity Health Medical Foundation—Woodland and Davis, our board certified gastroenterologists work in conjunction with onsite radiologists, pathologists, surgeons and oncologists to offer advanced, comprehensive treatment through consultative services and medical procedures. Our collective expertise means our patients benefit from the perspective and experience of a whole team of gastroenterology doctors who regularly perform advanced procedures such as endoscopic ultrasound and endoscopic retrograde cholangiopancreaticography (ERCP).

Jason Umphress, MD

Dr. Umphress specializes in managing gastrointestinal, liver, and pancreaticobiliary disease both in the clinic and hospital setting. He is trained in endoscopy for the diagnosis and treatment of gastrointestinal disease. Prior to joining Woodland Healthcare, Dr. Umphress completed his fellowship in gastroenterology at the University of California at Davis School of Medicine, and performed extensive research on the use of endoscopic ultrasound. Dr. Umphress is board certified in gastroenterology.  Dr. Umphress believes that early detection is the key to good health, and focuses on what’s best for the patient at every encounter. 

Rafiq Sheikh, MD

Dr. Sheikh specializes in the treatment of various digestive disorders, such as gastroesophageal reflux disease, peptic ulcer disease, inflammatory bowel disease, and gastrointestinal, pancreatic and liver cancers. He completed his medical school and postgraduate training in India and the UK. He completed his fellowship in gastroenterology at University of California at Davis School of Medicine, where he published his research on colon cancer/polyps. He is board certified in gastroenterology and internal medicine. Dr. Sheikh believes in evidence-based medical approaches, actively  involving his patients in joint decision making and treatment plans. He treats his patients with respect and compassion. Dr. Sheikh speaks several languages including Kashmiri, Urdu, Hindi, and Punjabi.

Gurpreet Singh, MD

Dr. Singh approaches health care with an emphasis on kindness—devoting time and attention to his patients to ensure he can provide them with individualized care. Through his years of experience in gastroenterology, Dr. Singh has emphasized active listening and education with his patients, to lead to informed decisions about their health and care.  He is board certified in gastroenterology and completed his fellowship in gastroenterology at Rutgers Biomedical and Health Sciences/Rutgers University.

Conditions

Common Gastroenterology conditions may include: 

  • Hepatitis A, B & C
  • Acid reflux disorder
  • Barrett’s esophagus
  • Acute and chronic liver diseases
  • Celiac disease
  • Constipation & diarrhea
  • Digestive disease tumors
  • Irritable bowel syndrome
  • GI bleeding
  • Hemorrhoids
  • Crohn’s disease & ulcerative colitis

     

Diagnosis and Treatment

Methods of diagnosis and treatment of gastroenterological conditions are vast. At Dignity Health Medical Foundation—Woodland and Davis, our specialists select a personalized treatment plan. Some of the procedures performed include:

Upper endoscopy, also known as EGD, is a procedure in which a thin flexible tube with a light and camera at its tip is used to look inside (and possibly operate on) the upper digestive tract. 

A colonoscope (similar to an endoscope) is used to examine the inner lining of the large intestine.

This is similar to a colonoscopy, except it shows only the rectum and the lower part of the colon. 

This procedure combines upper gastrointestinal (GI) endoscopy and x-rays to treat problems of the bile and pancreatic ducts.

This procedure combines upper gastrointestinal (GI) endoscopy and x-rays to treat problems of the bile and pancreatic ducts.

A high-resolution digital scoping device allows for advanced viewing and operative capabilities

These procedures allow for removal of diseased tissue from the esophagus.

Also known as rubber band ligation, this procedure involves tying the base of an internal hemorrhoid with rubber bands to cut off blood flow.

Learn More

For more information about our gastroenterology services, or to schedule an appointment, please call 530.668.2600.