Gastroenterology and Hepatology

Our expert clinicians at The Johns Hopkins Division of Gastroenterology and Hepatology at Bayview Medical Center offer a full range of gastroenterology and hepatology services including endoscopy and motility studies.

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Schedule online through MyChart

Available for follow-up appointments with most providers
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Schedule by phone

New and existing patients can schedule by phone using these numbers:
For care in Maryland: 410-933-7495
For care in DC: 202-660-5555
International patients: +1-410-502-7683 or fill out a form

How to Find Us

JHBMC GI Endoscopy and GI Clinic
A building, 3rd floor (use green elevators)
4940 Eastern Ave
Baltimore, MD 21224

Patients going to either the A building or the AA building should use the main entrance with the blue awning and take green elevators to the 3rd floor.

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Centers and Clinics at Bayview Medical Center

Inflammatory bowel disease (Crohn’s disease and ulcerative colitis)
Hepatology, including pre-liver transplant evaluation
Motility (gastroparesis, achalasia, chronic constipation)

General gastroenterology (heartburn, diarrhea, constipation, blood in the stool)
Colon cancer screening

Procedures at Johns Hopkins Bayview

24-Hour pH impedance test
Anorectal manometry
Esophageal manometry
Capsule endoscopy
Colonoscopy (screening and treatment)
Endoscopic ultrasound (EUS) with fine needle aspiration
Endoscopic retrograde cholangiopancreatography (ERCP)
Endoscopic mucosal resection (EMR)
Endoscopic submucosal dissection (ESD)

Motility studies
Sigmoidoscopy
Therapeutic endoscopy (biliary and pancreatic disorders, endoscopic management of large polyps)
Upper Endos copy or Esophagogastroduodenoscopy (EGD)
Wireless esophageal pH test (Bravo test)

Our Team

Tsion Abdi, M.D., M.P.H.

Expertise: Barrett's Esophagus, Blood in Stool (Hematochezia), Colon Polyps, Colorectal Cancer Screening, Constipation
Venkata Sandeep Akshintala, M.B.B.S.

Expertise: Abdominal Pain, Anal Fistula, Anemias, Barrett's Esophagus, Bile Duct Disease
Robert Stephen Bulat, M.D., Ph.D., M.Sc.

Expertise: Gastroparesis
Kathy Patricia Bull-Henry, M.D., M.B.A.

Expertise: Celiac Disease, Clostridium Difficile, Diseases of the Small Bowel and Colon, Dysphagia, Eosinophilic Esophagitis
Ken Yon Hui, M.D., Ph.D.

Expertise: Colonoscopy, Emergency Medicine, Endoscopy, Gastroenterology
Michelle Lillian Ma, M.D.

Expertise: Acute Viral Hepatitis, Alcoholic Liver Disease, Alpha 1 Antitrypsin (AAT) Deficiency, Ascites, Autoimmune Hepatitis
Saowanee Ngamruengphong, M.D.

Expertise: Barrett's Esophagus, Bile Duct Disease, Burping Belching, Chest Pain, Cholangiocarcinoma
Sun Jung Oh, M.D.

Expertise: Esophageal Diseases, Gastroenterology, General Gastroenterology, Motility Disorders
Alyssa Maria Parian, M.D.

Expertise: Crohn's Disease, Gastroenterology, Inflammatory Bowel Disease (IBD), Perianal Fistula, Ulcerative Colitis
Huimin Yu, B.M., M.D., Ph.D.

Expertise: Abdominal Pain, Anal Fistula, Anemias, Clinical Gastroenterology, Clostridium Difficile