Massachusetts General Hospital

Ramnik J. Xavier, MD, PhD
Chief, Division of Gastroenterology
Board Certification: Gastroenterology, American Board of Internal Medicine
Clinical Interests: Ulcerative colitis, Crohn's disease, Celiac disease, Hepatitis, Autoimmune disorders of the GI tract, Gastrointestinal cancers
Accepting New Patients: Yes
Phone: 617-724-6007

Daniel C. Chung, MD
Clinical Chief
Board Certification: Gastroenterology, American Board of Internal Medicine; Internal Medicine, American Board of Internal Medicine
Clinical Interests: Colon cancer screening, Lynch syndrome, Hereditary colon cancer, Familial adenomatous polyposis / Gardner syndrome, Hereditary diffuse gastric cancer, Familial pancreatic cancer, Pancreatic neuroendocrine tumors, Carcinoid tumor
Accepting New Patients: Yes
Phone: 617-726-3544

Diane Renee Abraczinskas, MD
Board Certification: Gastroenterology, American Board of Internal Medicine
Clinical Interests: General gastroenterology, Disorders of the esophagus, Eosinophilic esophagitis, Celiac sprue, Gastrointestinal bleeding, Hepatology
Accepting New Patients: Yes
Phone: 617-724-6044

Ashwin N. Ananthakrishnan, MBBS, MPH
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: Crohn's disease, Ulcerative colitis, General gastroenterology
Accepting New Patients: Yes
Phone: 617-724-6005

Karin L. Andersson, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine; Transplant Hepatology, American Board of Internal Medicine
Clinical Interests: Liver disease, Viral hepatitis
Accepting New Patients: Yes
Phone: 617-726-3524

Bernard Ralph Aserkoff, MD
Board Certification: Gastroenterology, American Board of Internal Medicine; Internal Medicine, American Board of Internal Medicine
Clinical Interests: General gastroenterology
Accepting New Patients: Yes
Phone: 617-724-5995

Jakob Begun, MD, PhD
Clinical Interests: Pathogenesis of inflammatory bowel disease
Accepting New Patients: Yes
Phone: 617-724-6113

William Robert Brugge, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: Pancreatic cancer, Therapeutic endoscopy, Endoscopic ultrasound, Pancreatic cystic lesions, Esophageal cancer, Barrett's esophagus, Gastric (stomach) cancer, Gastrointestinal malignancy, Pancreatic biliary disorders, Stromal cell tumors
Accepting New Patients: Yes
Phone: 617-724-0578

Cheryl Jean Bunker, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: Disorders of the esophagus, General gastroenterology
Accepting New Patients: Yes
Phone: 617-724-0578

Peter J. Carolan, Jr, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Accepting New Patients: Yes
Phone: 617-726-0397

Brenna W. Casey, MD
Board Certification: Gastroenterology, American Board of Internal Medicine
Clinical Interests: Endoscopic ultrasound, Therapeutic endoscopy, Gastrointestinal malignancy, Pancreatic biliary disorders 
Accepting New Patients: Yes
Phone: 617-724-1685

Andrew T. Chan, MD, MPH
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: Cancer prevention, General gastroenterology, Colorectal cancer, Hereditary colorectal cancer, Gastrointestinal cancers
Accepting New Patients: Yes
Phone: 617-726-3212

Jennifer Y. Chen, MD
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: Liver disease, Viral hepatitis, General gastroenterology
Accepting New Patients: Yes
Phone: 617-643-0826

Michael Yoon-Suk Choi, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: General gastroenterology, Colorectal center, Colon cancer screening
Accepting New Patients: Yes
Phone: 617-726-3544

Raymond T. Chung, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine; Transplant Hepatology, American Board of Internal Medicine
Clinical Interests: Liver Disease / Hepatology, Viral hepatitis, Liver cancer, Liver transplant
Accepting New Patients: Yes
Phone: 617-724-6006

Francis P. Colizzo III, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Accepting New Patients: Yes
Phone: 617-726-7933

Kathleen Corey, MD, MPH
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: Non-alcoholic fatty liver disease, Hepatitis C, Hepatitis B, Cholestatic liver disease, Liver transplant
Accepting New Patients: Yes
Phone: 617-724-1685

Andrew S. deLemos, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: General GI, metabolism and obesity
Accepting New Patients: Yes
Phone: 617-724-6006

Jules Leonard Dienstag, MD
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: Viral hepatitis, Chronic liver disease, Liver transplant
Accepting New Patients: Yes
Phone: 617-726-7450

David G. Forcione, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: ERCP (Endoscopic retrograde cholangiopancreatography), Endoscopic ultrasound, Disorders of the pancreas and bile ducts, Pancreas cysts, Pancreatitis, Barrett's esophagus, Endoscopic ablation of Barrett's esophagus (EMR, RFA, Cryo), Endolumenal stenting (esophageal stents, gastric stents), Complex colon polyps and colonic stents, Cyanoacrylate glue injection for varices
Accepting New Patients: Yes
Phone: 617-726-0607

Manish Gala, MD
Clinical Interests: Familial cancer syndromes
Accepting New Patients: Yes
Phone: 617-724-6004

John Garber III, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: General GI, inflammatory bowel disease, celiac disease, GI cancer
Accepting New Patients: Yes
Phone: 617-724-6005

Cosmas Chris Giallourakis, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: Crohn's disease, Ulcerative colitis, General gastroenterology, Hepatology
Accepting New Patients: Yes
Phone: 617-726-2026

Stephen Edward Goldfinger, MD
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: Familial mediterranean fever, Carcinoid syndrome, Zollinger ellison syndrome, Other GI neuroendocrine disorders, Abdominal pain, Celiac sprue, Diarrhea
Accepting New Patients: Yes
Phone: 617-724-6004

Nitin Gupta, MD
Clinical Interests: Inflammatory Bowel Disease
Accepting New Patients: Yes
Phone: 617-724-6113

Chin Hur, MD
Board Certification: Gastroenterology, American Board of Internal Medicine
Clinical Interests: Gastroesophageal reflux disease (GERD), Barrett's esophagus, Gastrointestinal cancer screening, Cancer chemoprevention, Eosinophilic esophagitis
Accepting New Patients: Yes
Phone: 617-726-3544

Allen Hwang, MD
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: Pancreaticobiliary disease, Pancreatic cysts, Barrett's esophagus, Endoscopic mucosal resection, Pancreatic cancer
Accepting New Patients: Yes
Phone:617-724-0578

Lee Michael Kaplan, MD, PhD
Board Certification: Gastroenterology, American Board of Internal Medicine; Internal Medicine, American Board of Internal Medicine
Clinical Interests: Hepatitis, Liver disease, Obesity, GI endocrine tumors
Accepting New Patients: Yes
Phone: 617-724-6007

Peter Baker Kelsey, MD
Board Certification: Gastroenterology, American Board of Internal Medicine; Internal Medicine, American Board of Internal Medicine
Clinical Interests: Bleeding of unknown origin, Disorders of the biliary and pancreas, Therapeutic endoscopy
Accepting New Patients: Yes
Phone: 617-724-6044

Hamed Khalili, MD
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: Inflammatory bowel disease (IBD), Risk factors for development of IBD, Identifying subgroups at highest risk for poor outcomes
Accepting New Patients: Yes
Phone: 617-724-6005

Lindsay King, MD
Clinical Interests: General hepatology, transplant hepatology
Accepting New Patients: Yes
Phone: 617-724-6113

Gauree Gupta Konijeti, MD, MPH
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: General gastroenterology, General hepatology, Endoscopy, Inflammatory bowel disease
Accepting New Patients: Yes
Phone: 617-724-6113

Braden Kuo, MD
Board Certification: Gastroenterology, American Board of Internal Medicine
Clinical Interests: Esophageal disease, General gastroenterology, GI motility, Gastroesophageal reflux disease (GERD)
Accepting New Patients: Yes
Phone: 617-724-6038

Jay Luther, MD
Clinical Interests: General gastroenterology
Accepting New Patients: Yes
Phone: 617-724-6113

Sriram Machineni, MD
Clinical Interests: Obesity Medicine
Accepting New Patients: Yes
Phone: 617-726-4400

Daniel L Motola, MD, PhD
Clinical Interests: Non-alcoholic fatty liver disease, Abnormal liver function tests, Hepatitis C, Hepatitis B, Autoimmune hepatitis, Cirrhosis, Liver failure, Liver transplantation, Celiac disease, General gastroenterology, Diagnostic endoscopy
Accepting New Patients: Yes
Phone: 617-724-6113

Alan C. Mullen, MD, PhD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: Viral hepatitis, Chronic liver disease, General GI, Abnormal liver function tests
Accepting New Patients: Yes
Phone: 617-724-6066

Barbara Joyce Nath, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: Biliary manometry, Esophageal motility, Swallowing disorders, Gastroesophageal reflux disease (GERD)
Accepting New Patients: Yes
Phone: 617-726-3505

Deanna Diemanh Nguyen, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: Ulcerative colitis, Crohn's disease, Inflammatory bowel disease, Celiac sprue, Microscopic colitis
Accepting New Patients: Yes
Phone: 617-726-2047

Norman Shizuaki Nishioka, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: Barrett's esophagus, Esophageal cancer, Gastroesophageal reflux disease (GERD), Diagnostic and therapeutic endoscopy
Accepting New Patients: Yes
Phone: 617-726-4422

Joanna M. Peloquin, MD
Clinical Interests: Liver transplantation, health care quality and delivery of care
Accepting New Patients: Yes
Phone: 617-724-6113

Lee Fu Peng, MD, PhD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: Hepatology, Gastroenterology, Liver disease, Endoscopy - EGD and Colonoscopy, Viral Hepatitis, Cirrhosis, Metabolic liver disease, Autoimmune Hepatitis, Cholestatic liver disease, Acute Liver Failure
Accepting New Patients: Yes
Phone: 617-724-6004

Daniel Stephan Pratt, MD
Board Certification: Gastroenterology, American Board of Internal Medicine
Clinical Interests: Primary Biliary Cirrhosis, Primary Sclerosing Cholangitis, Autoimmune hepatitis, Autoimmune liver disease, Cirrhosis, Hepatitis B, Hepatitis C, Hepatocellular carcinoma, Cholangiocarcinoma, Abnormal liver function tests, Liver tumors
Accepting New Patients: Yes
Phone: 617-726-3313

Ruma Rajbhandari, MD
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: General gastroenterology, Hepatology
Accepting New Patients: Yes
Phone: 617-643-0826

James Michael Richter, MD
Board Certification: Gastroenterology, American Board of Internal Medicine; Internal Medicine, American Board of Internal Medicine
Clinical Interests: Colon cancer and polyps, Gastrointestinal bleeding, Inflammatory bowel disease, Gastroesophageal reflux disease (GERD)
Accepting New Patients: Yes
Phone: 617-726-0397

Jenny S. Sauk, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: Ulcerative colitis, Crohn's disease, Microscopic colitis, Celiac disease, Gastrointestinal cancer
Accepting New Patients: Yes
Phone: 617-726-2047

Esperance Schaefer, MD, MPH
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: Viral hepatitis, Autoimmune hepatitis, End stage liver disease / cirrhosis, General gastroenterology, Inflammatory bowel disease
Accepting New Patients: Yes
Phone: 617-724-6007

Robert Harris Schapiro, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Gastroenterology, American Board of Internal Medicine
Clinical Interests: Gastrointestinal bleeding, Interventional endoscopy, Pancreatic and biliary disease
Accepting New Patients: Yes
Phone: 617-726-3524

Amandeep Singh, MD, PhD
Clinical Interests: Obesity, General gastroenterology, Liver disease
Accepting New Patients: Yes
Phone: 617-643-0826

Gitanjali Srivastava, MD
Board Certification: Internal Medicine, American Board of Internal Medicine; Pediatrics, American Board of Pediatrics
Clinical Interests: Metabolism and obesity, Gastric bypass, Energy expenditure, Pediatric obesity
Accepting New Patients: Yes
Phone: 617-726-4400

Kyle Staller, MD
Clinical Interests: General gastroenterology, GI motility
Accepting New Patients: Yes
Phone: 617-643-0826

Fatima Cody Stanford, MD, MPH
Clinical Interests: Adult and pediatric obesity, Physical activity, Nutrition, Exercise patterns, Ethnic disparities in obesity, Public health, Health policy
Accepting New Patients: yes
Phone: 617-726-4400

Jayant Talreja, MD
Clinical Interests: Interventional endoscopy, Endoscopic retrograde cholangiopancreatography (ERCP), Endoscopic ultrasound, Endoscopic management of biliary strictures
Board Certification: Internal Medicine, American Board of Internal Medicine
Accepting New Patients: yes
Phone: 617-724-0578

Michael Thiim, MD
Board Certification: Gastroenterology, American Board of Internal Medicine
Clinical Interests: Autoimmune hepatitis, Cirrhosis, Hepatitis B, Hepatitis C, Liver failure, Liver transplant, Portal hypertension, Diagnostic Endoscopy
Accepting New Patients: Yes
Phone: 617-726-3212

Harry J. Thomas, MD
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: Inflammatory bowel disease
Accepting New Patients: Yes
Phone: 617-724-6113

C. Giovanni Traverso, MB, BChir, PhD
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: General gastroenterology, Hereditary colon cancer, Lynch syndrome, Familial adenomatous polyposis
Accepting New Patients: Yes
Phone: 617-724-6113

Debra F. Weinstein, MD
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: Screening and Detection of Colon Cancer, Surveillance for colonic polyps
Accepting New Patients: Yes
Phone: 617-724-5995

Ying Wu, MD
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: Liver disease / hepatology, Health care quality and delivery of care
Accepting New Patients: Yes
Phone: 617-724-6113

Vijay Yajnik, MD, PhD
Board Certification: Gastroenterology, American Board of Internal Medicine
Clinical Interests: Inflammatory bowel disease, Crohn's disease, Ulcerative colitis, Microscopic colitis, Immune diseases affecting GI tract, Celiac disease, Gastrointestinal cancers
Accepting New Patients: Yes
Phone: 617-724-6005

Sonia Yoon, MD
Board Certification: Internal Medicine, American Board of Internal Medicine
Clinical Interests: GI Motility, Gastroesophageal reflux disease (GERD)
Accepting New Patients: yes
Phone: 617-724-6038

Nurse practitioners

Judith Bloom, NP
Program: Liver
Phone: 617-726-0628

Lindsay Farragher, NP
Program: Interventional
Phone: 617-726-0607

Kevin Knoblock, NP
Program: Inpatient
Phone: 617-724-6113

Christopher Shaw, NP
Program: Motility
Phone: 617-643-6491

Kathleen Sullivan, NP
Program: Inflammatory bowel disease
Phone: 617-724-4728

Andrea Thurler, NP
Program: Research/Motility
Phone: 617-724-6038

Janet Zardas, NP
Program: Liver
Phone: 617-724-6006