• Bernard Leman, M.D.

    Dr. Bernard Leman

    Area of Specialization

    Inflammatory Bowel Disease
    Infusion, Research

  • Michael O'Brien, M.D.

    Dr. Michael O'Brien

    Area of Specialization

    General Gastroenterology

  • Ravi Vemulapalli, M.D.

    Dr. Ravi Vamulapalli

    Area of Specialization

    General Gastroenterology
    Liver Disease, Infusion, Research

  • Archana Verma, M.D.

    Dr. Archana Verma

    Area of Specialization

    Inflammatory Bowel Disease
    Advanced Therapeutics

  • Stacey Roberts, M.D.

    Dr. Stacey Roberts

    Area of Specialization

    General Gastroenterology
    Advanced Therapeutics

  • Nagendra Myneni, M.D.

    Dr. Nagendra Myneni

    Area of Specialization

    General Gastroenterology

  • Thomas Martin, D.O.

    Dr. Thomas Martin

    Area of Specialization

    General Gastroenterology

  • Tercio Lopes, M.D.

    Dr. Tercio Lopes

    Area of Specialization

    General Gastroenterology
    Advanced Therapeutics

  • Raj Iyer, M.D.

    Dr. Raj Iyer

    Area of Specialization

    General Gastroenterology
    Therapeutics, Research and Liver Disease

  • David Newton, M.D.

    Dr. David Newton

    Area of Specialization

    General Gastroenterology

  • Michael Page, M.D.

    Dr. Michael Page

    Area of Specialization

    Colorectal Surgery
    Hemorrhoids & Fissures



At the Iowa Digestive Disease Center we understand that patients and their healthcare providers expect the highest quality of care at the lowest cost.



2016 Free Colonoscopy Screening Event. Click here for more information!

Iowa Digestive Disease Center and Iowa Endoscopy Center are proud to serve the community and surrounding area with regard to digestive health needs. Our endoscopy center is one of only three centers in Iowa recognized by the American Society for Gastrointestinal Endoscopy. The American Society for Gastrointestinal Endoscopy is known as the leader in setting standards for excellence in gastrointestinal endoscopy and has designed the only national program recognizing quality and safety in the practice of gastrointestinal endoscopy.

Our center has also been accredited by the AAAHC, having met their rigorous quality and safety standards. AAAHC accreditation and certification is recognized nationwide as a symbol of quality that reflects an organization’s commitment to meeting certain performance standards.

2014 IDDC & IEC Performance Scorecard

Our board-certified physicians specialize in:

  • Gastroenterologya medical specialty that focuses on the digestive system (esophagus, stomach, large and small intestines) including colonoscopy (colon cancer screening)
  • Hepatologya medical specialty that focuses on the liver and associated organs (gallbladder, pancreas, biliary tree)
  • Advanced Therapeuticstreatment of complex gastrointestinal disorders requiring advanced endoscopic procedures that often preclude a need for surgery
  • Diagnostic Endoscopylooking inside the body through an endoscope (long, flexible tube) to find out what is wrong
  • Therapeutic Endoscopytreatment of gastrointestinal disorders requiring the use of an endoscope to correct a problem or condition
  • InfusionInfusion therapy involves the administration of medication through a needle or catheter. It is prescribed when a patient’s condition is so severe that it cannot be treated effectively by oral medications

In addition to the above, we provide thorough diagnosis and treatment for patients with the following GI conditions:

  • Heartburn
  • Swallowing difficulties (dysphagia)
  • Intestinal bleeding
  • Stomach ulcers
  • Abdominal pain
  • Hepatitis & Cirrhosis
  • Gallbladder disorders
  • Abnormal liver tests
  • Ulcerative colitis
  • Changes in bowel habits
  • Rectal bleeding
  • Crohn's and Celiac disease

Colon cancer screening

Colon cancer screening saves lives. Get the facts on colorectal cancer.

Secure Patient Portal

The Secure Messaging Patient Portal ( is now available!

Office Visits & Procedures

A brief overview of what to expect during your office visit & procedures.

Referring Providers

Partnering with you and your patients remains a priority for us.

Diseases & Conditions

Learn about common diseases and conditions of digestive system.


InFusion Center

Infusion therapy is performed when a patient does not respond well to other treatment methods.

Endoscopy Center

Iowa Endoscopy Center is a free standing Ambulatory Surgery Center dedicated to gastro-intestinal endoscopy.

Therapeutics Center

Advanced therapeutics begin when standard endoscopic procedures no longer serve the patient.

IBD Center

A multi disciplinary center of excellence for adults and children with Crohn's Disease and ulcerative colitis.