Motility and Neurogastroenterology

The Johns Hopkins Motility Clinic and Neurogastroenterology Center are committed to improving the health of patients affected by motility disorders. At this time, we are experiencing a high volume of referrals, and we are not accepting new patients

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Conditions We Treat | Our Team | Appointments and Referrals

Conditions We Treat

Symptoms of motility disorders are common and may overlap with symptoms of many other gastrointestinal conditions. Our center diagnoses and treats both common conditions (such as gastroesophageal reflux and constipation) and more rare ones (such as gastroparesis and scleroderma).
Learn more about conditions we treat:

Our Team

Our multi-specialty team includes gastroenterologists, gynecologists, pathologists, surgeons and physical therapists. Together, we aim to provide the best diagnostic and therapeutic options for all motility disorders. Many of our doctors are also researchers looking to better understand disease mechanisms and develop better treatment options for patients with motility disorders.


  • Tsion Abdi, M.D., M.P.H.

    • Program Director, Gastrointestinal Motility and Neurogastroenterology Fellowship
    • Assistant Professor of Medicine

    Expertise: Barrett's Esophagus, Blood in Stool (Hematochezia), Colon Polyps, Colorectal Cancer Screening, Constipation

  • Olaya Isabella Brewer Gutierrez, M.B.B.S.

    • Director of Endoscopy, Sibley Memorial Hospital
    • Director, Johns Hopkins Heartburn Center
    • Assistant Professor of Medicine

    Expertise: Barrett's Esophagus, Bile Duct Disease, Burping Belching, Chest Pain, Colon Polyps

  • Robert Stephen Bulat, M.D., Ph.D., M.Sc.

    • Clinical Director, Neurogastroenterology
    • Assistant Professor of Medicine

    Expertise: Gastroparesis

  • Monika Lammi, M.D.

    • Assistant Professor of Medicine
  • Zara Manuelyan, M.D.

    • Assistant Professor of Medicine

    Expertise: Achalasia, Celiac Disease, Colorectal Cancer Screening, Eosinophilic Esophagitis, Esophageal Diseases

Eric Moughames, M.D.

Motility Fellow

headshot of Eric Moughames

Valerie Owen, MSN, C.R.N.P

Nurse Practitioner

portrait of Valerie Owen, MSN, C.R.N.P

Monica Riegert, D.N.P., C.R.N.P.

Nurse Practitioner

Riegert, Monica, DNP, CRNP
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Appointments and Referrals

At this time, we are not accepting new patients due to the high volume of referrals.

Once we are back to full capacity, we will accepts regional, national and international referrals. We also encourage self-referrals and can provide ongoing gastrointestinal care.

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