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Maaza Sophia Abdi, M.D.
Expertise: Abdominal Pain, Anal Cancer, Celiac Disease, Clinical Gastroenterology, Colon Polyps
Primary Location: Johns Hopkins Bayview Medical Center, Baltimore, MD
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Elham Afghani, M.D., M.P.H.
Expertise: Abdominal Pain, Colon Polyps, Colonoscopy, Colorectal Cancer Screening, Diarrhea
Primary Location: Johns Hopkins Medicine - Green Spring Station, Lutherville, MD
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Marshall S Bedine, M.D.
Expertise: Gastroenterology, Inflammatory Bowel Disease (IBD), Irritable Bowel Syndrome
Primary Location: Johns Hopkins Medicine - Green Spring Station, Lutherville, MD
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Victor Chen, M.D.
Expertise: Acute or Chronic Viral Hepatitis, Acute Viral Hepatitis, Alcoholic Liver Disease, Alpha 1 Antitrypsin (AAT) Deficiency, Ascites
Primary Location: Johns Hopkins Medicine - Green Spring Station, Lutherville, MD
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Doan Y Dao, M.D.
- Director, Center of Excellence for Liver Disease in Viet Nam, Johns Hopkins University School of Medicine
Expertise: Clinical Gastroenterology, Hepatitis, Liver Cancer, Liver Disease
Primary Location: Johns Hopkins Outpatient Center (now called Levi Watkins, Jr., M.D., Outpatient Center), Baltimore, MD
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Michael Gilbert Goggins, M.B.B.Ch., M.D.
Expertise: Abdominal Pain, Anemias, Barrett's Esophagus, Bloating, Blood in Stool (Hematochezia)
Primary Location: The Johns Hopkins Hospital (Main Entrance), Baltimore, MD
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James Peter Hamilton, M.D.
- Director of Hepatology
Expertise: Acute Viral Hepatitis, Alcoholic Liver Disease, Alpha 1 Antitrypsin (AAT) Deficiency, Ascites, Autoimmune Hepatitis
Primary Location: Johns Hopkins Medicine - Green Spring Station, Lutherville, MD
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Mouen A Khashab, M.D.
- Director of Therapeutic Endoscopy
Expertise: Achalasia, Bile Duct Disease, Cholangiocarcinoma, Cholangioscopy, Colon Polyps
Primary Location: The Johns Hopkins Hospital (Main Entrance), Baltimore, MD
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Mark Gregory Lazarev, M.D.
Expertise: Anal Fistula, Celiac Disease, Clinical Gastroenterology, Colitis, Colon Polyps
Primary Location: The Johns Hopkins Hospital (Main Entrance), Baltimore, MD
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Joanna Miller Peloquin Melia, M.D.
Expertise: Anal Fistula, Celiac Disease, Celiac Sprue, Colitis, Crohn's Disease
Primary Location: The Johns Hopkins Hospital (Main Entrance), Baltimore, MD
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Stephen Joseph Meltzer, M.D.
Expertise: Barrett's Esophagus, Esophageal Cancer, Gastroenterology, Gastroesophageal Reflux Disease (GERD)
Primary Location: Johns Hopkins Medicine - Green Spring Station, Lutherville, MD
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Sun Jung Oh, M.D.
Expertise: Esophageal Diseases, Gastroenterology, General Gastroenterology, Motility Disorders
Primary Location: The Johns Hopkins Hospital, Baltimore, MD
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Alyssa Maria Parian, M.D.
Expertise: Crohn's Disease, Gastroenterology, Inflammatory Bowel Disease (IBD), Perianal Fistula, Ulcerative Colitis
Primary Location: Johns Hopkins Bayview Medical Center, Baltimore, MD
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Vikesh Singh, M.D., M.Sc.
- Director of Pancreatology
- Director of Endoscopy, Johns Hopkins Hospital
Expertise: Abdominal Pain, Clinical Gastroenterology, Colon Polyps, Digestive Disorders, Endoscopic Ultrasound
Primary Location: The Johns Hopkins Hospital (Main Entrance), Baltimore, MD
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Hazel Marie Galon Veloso, M.D.
Expertise: Abdominal Pain, Anemias, Barrett's Esophagus, Bloating, Blood in Stool (Hematochezia)
Primary Location: Johns Hopkins Medicine - Green Spring Station, Lutherville, MD
Our expert clinicians at The Johns Hopkins Division of Gastroenterology and Hepatology at Green Spring Station offer a full range of gastroenterology and hepatology services including endoscopy and motility studies.
Request an Appointment
Schedule online through MyChart
Available for follow-up appointments with most providers
Log into MyChart
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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
Centers and Clinics at Green Spring Station
- General gastroenterology (heartburn, diarrhea, constipation, blood in the stool, screening colonoscopy)
- Hepatology, including pre-liver transplant evaluation
- Inflammatory bowel disease (Crohn’s disease and Ulcerative colitis)
- Pancreatitis Center
- Motility (gastroparesis, achalasia, chronic constipation)
- Acupuncture and Chinese Medicine
- Infusion Center
- Colon cancer screening
- High Resolution Anoscopy
Procedures at Green Spring Station
Learn about these procedures in our Health section.
- 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)
- High resolution anoscopy
- Motility studies
- Sigmoidoscopy
- Therapeutic endoscopy (biliary and pancreatic disorders, endoscopic management of large polyps)
- Upper Endoscopy or Esophagogastroduodenoscopy (EGD)
- Wireless esophageal pH test (Bravo test)
Our Team
Advanced Providers
Jae O. Lee, MSN, CRNP
Kate Lee-Young, DNP, MSN, CRNP
Ashley M. Salamone, MSN, CRNP
Blake Reddick, DNP, CRNP
General Gastroenterology Nurse Practitioner
