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Kevin Peifer, MD

Dr. Peifer is a board-certified gastroenterologist and joined Rockford Gastroenterology Associates in 2006 after completing his advanced endoscopy fellowship at Washington University School of Medicine in St. Louis. He received his medical degree from Medical College of Ohio. He completed his internal medicine residency and gastroenterology fellowship at Washington University School of Medicine.

Dr. Peifer has served as the director of endoscopy at Rockford Gastroenterology Associates since 2012. He was the director of endoscopy at Saint Anthony’s Hospital from 2012-2020. He also served as the president of the Saint Anthony’s medical staff in 2019. Dr. Peifer is an active member of the medical staff at OSF Saint Anthony Medical Center and UW Health Swedish American Hospital.

Dr. Peifer is a clinical assistant professor at the University of Illinois at Rockford and is involved in educating medical students and residents. He is a member of the American College of Gastroenterology (ACG), American Gastroenterology Association (AGA) and American Society for Gastrointestinal Endoscopy (ASGE).

Dr. Peifer maintains interest in pancreatic, biliary and liver diseases. He has advanced training in therapeutic techniques of interventional endoscopy including endoscopic retrograde cholangiopancreatography (ERCP), endoscopic ultrasound with fine-needle aspiration (EUS-FNA) and endoscopic mucosal resection (EMR).

Dr. Peifer is an active member of the medical staff at UW Health Swedish American Hospital and OSF Saint Anthony Medical Center.

Conditions Dr. Peifer treats:

  • Abnormal Liver Tests
  • Anemia
  • Acid Reflux/Heartburn/GERD
  • Barrett’s Esophagus
  • Biliary Tract Disorders
  • Celiac Disease
  • Chronic Liver Disease, including Cirrhosis
  • Colon Cancer Prevention
  • Colon Polyps
  • Constipation
  • Clostridium Difficile Infection
  • Crohn’s Disease
  • Diarrhea
  • Esophageal Disorders including Dysphagia (trouble swallowing)
  • Fecal Incontinence & Urgency
  • Fatty Liver (NAFLD/NASH)
  • Gallstones & Gallbladder Disease
  • Hepatitis B & Hepatitis C
  • Hemorrhoids
  • Hiatal Hernia
  • Helicobacter Pylori Infection
  • Irritable Bowel Syndrome (IBS)
  • Inflammatory Bowel Disease (Crohn’s Disease or Ulcerative Colitis)
  • Pancreatitis (Acute & Chronic)
  • Pancreatic Cysts & Mass
  • Peptic Ulcer Disease (Stomach Ulcers)
  • Radiation Proctitis
  • Rectal bleeding
  • Small Intestinal Bacterial Overgrowth (SIBO)
  • Ulcerative Colitis

Procedures Dr. Peifer performs:

  • Upper Endoscopy (EGD)
  • Colonoscopy
  • Flexible Sigmoidoscopy
  • Endoscopic Ultrasound
  • Endoscopic Retrograde Cholangiopancreatography (ERCP)
  • Endoscopy for Gastrointestinal Bleeding
  • Ambulatory pH Monitoring (Bravo© pH)
  • Argon Plasma Coagulation (APC)
  • Fecal Microbiota Transplant (FMT) for Chronic C. Difficile Infection
  • PEG Tube Placement (Endoscopic Feeding Tube)
  • Video Capsule Endoscopy (VCE) of the Small Intestine
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