Gastroenterology

Doctors + Care Team

Raza Malik, MD, PhD

Raza Malik, MD, PhD

Accepting New Patients

Title(s): Director, Hepatology; Associate Chief, Division of Gastroenterology
Department(s): Medicine, Gastroenterology
Appt. Phone: 617-636-5883
Fax #:

Acute Liver Failure, Liver Transplantation, General Hepatology

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Harmony Allison, MD
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Harmony Allison, MD

Accepting New Patients

Title(s): Gastroenterologist; Clinical and Research Instructor, Tufts University School of Medicine
Department(s): Medicine, Gastroenterology
Appt. Phone: 617-636-5883
Fax #: 617-636-1480

Gastrointestinal motility, inflammatory bowel disease, general GI and endoscopy, diarrhea, constipation, celiac sprue and limited LFT abnormalities

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Alyssa M Brodsky, MS, RD, LD

Alyssa M Brodsky, MS, RD, LD

Title(s): Nutritionist
Department(s): Clinical Nutrition, Gastroenterology and Nutrition, General Pediatrics, Weight and Wellness Center
Appt. Phone: 617-636-5273
Fax #: 617-636-2386

Nutrition Support, Nutritional Manangement of Premature Infants, Celiac Disease, GDM

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Aaron M. Dickstein, MD
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Aaron M. Dickstein, MD

Accepting New Patients

Title(s): Gastroenterologist; Director, Gastroenterology Fellowship Program; Assistant Professor, Tufts University School of Medicine
Department(s): Medicine, Gastroenterology
Appt. Phone: 617-636-5883
Fax #: 617-636-9292

General gastroenterology, gastrointestinal endoscopy and colonoscopy, gastrointestinal motility, obscure GI bleeding, fecal microbiota transplantation, video capsule endoscopy

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Raffi Karagozian, MD

Raffi Karagozian, MD

Accepting New Patients

Title(s): Hepatologist
Department(s): Medicine, Gastroenterology
Appt. Phone: 617-636-5883
Fax #: 617-636-4505

Transplant hepatology, Hepatitis C

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David Lee, MD

David Lee, MD

Title(s): Advanced Hepatology Fellow
Department(s): Medicine, Gastroenterology
Appt. Phone: 617-636-5883
Fax #: 617-636-9292

Chronic liver diseases, viral hepatitis, fatty liver diseases, autoimmune and hereditary liver disorders

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John Leung, MD
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John Leung, MD

Accepting New Patients

Title(s): Director, Center for Food Related Diseases at Tufts Medical Center; Co-Director, Food Allergy Center at Floating Hospital for Children; Allergist; Assistant Professor, Tufts University School of Medicine
Department(s): Medicine, Pediatric Allergy, Gastroenterology, Pediatric Gastroenterology
Appt. Phone: 617-636-5883 (Gastroenterology)
Fax #: 617-636-9292

Allergic rhinitis (seasonal allergy), anaphylaxis, angioedema, asthma, celiac disease, chronic urticarial (hives), drug allergies, eczema, eosinophilic esophagitis/eosinophilic gastrointestinal disorders, food allergy (e.g. peanuts, cow milk, soy, etc.), food intolerance (lactose, fructose, fructan), food protein-induced enterocolitis syndrome (FPIES), immunodeficiency, oral allergy syndrome, pruritus, sinusitis, stinging insect allergy, wheat hypersensitivity

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Alexander N.  Levy, MD

Alexander N. Levy, MD

Accepting New Patients

Title(s): Gastroenterologist; Assistant Professor, Tufts University School of Medicine
Department(s): Medicine, Gastroenterology
Appt. Phone: 617-636-5883
Fax #: 617-636-9292

Inflammatory bowel disease, Crohn's disease, ulcerative colitis, general gastroenterology, gastrointestinal endoscopy and colonoscopy, chromoendoscopy, colon cancer screening

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Joel B. Mason, MD

Joel B. Mason, MD

Accepting New Patients

Title(s): Gastroenterologist; Professor, Tufts University Schools of Medicine and Friedman School of Nutritional Science and Policy; Senior Scientist and Director, Vitamins and Carcinogenesis Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University
Department(s): Medicine, Clinical Nutrition, Gastroenterology
Appt. Phone: 617-636-5883
Fax #: 617-636-1480

Malabsorption and unintentional weight loss, Inflammatory bowel disease, Nutritional aspects of gastrointestinal disease, home nutritional therapy, enteral and parenteral nutrition

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Nikola Natov, MD
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Nikola Natov, MD

Accepting New Patients

Title(s): Gastroenterologist; Assistant Professor, TUSM
Department(s): Medicine, Gastroenterology
Appt. Phone: 617-636-5883
Fax #: 617-636-1480

Advanced endoscopy, ERCP, endoscopic ultrasound, benign and malignant esophageal disorders (esophageal strictures, Barrett's esophagus, cancer, achalasia), gastric intestinal metaplasia, acute and chronic pancreatitis, pancreatic cysts, biliary strictures, bile duct stones, cholangiocarcinoma, colon cancer screening and surveillance,endoluminal stenting, and endoscopic resection of large colon polyps.

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Lori B. Olans, MD, MPH
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Lori B. Olans, MD, MPH

Accepting New Patients

Title(s): Gastroenterologist; Assistant Professor, Tufts University School of Medicine
Department(s): Medicine, Gastroenterology
Appt. Phone: 617-636-5883
Fax #: 617-636-8615

General gastroenterology, inflammatory bowel disease

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Andrew G. Plaut, MD
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Andrew G. Plaut, MD

Accepting New Patients

Title(s): Gastroenterologist; Professor, Tufts University School of Medicine
Department(s): Medicine, Gastroenterology
Appt. Phone: 617-636-5883
Fax #: 617-636-4207

Gastroenterology, digestive diseases, gastrointestinal infections and parasitic disease, inflammatory bowel disease, diagnostic evaluation of unexplained pain or diarrhea

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Mark J. Sterling, MD

Mark J. Sterling, MD

Accepting New Patients

Title(s): Advanced Endoscopist
Department(s): Medicine, Gastroenterology
Appt. Phone: 617-636-5883
Fax #: 617-636-9292

ERCP and EUS, pancreatico-biliary endoscopy including EUS guided biopsy, direct cholangioscopy and laser lithotripsy, deep small bowel enteroscopy including management of obscure GI bleeding, GI luminal stenting, endoscopic mucosal resection

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Joel V. Weinstock, MD

Joel V. Weinstock, MD

Title(s): Chief, Division of Gastroenterology/Hepatology; Professor, Tufts University School of Medicine
Department(s): Medicine, Gastroenterology
Appt. Phone: 617-636-5883
Fax #: 617-636-4505

Gastroenterology, inflammatory bowel diseases, mucosal immunity, general gastroenterology, GI bleeding, endoscopy

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Robert F. Yacavone, MD

Robert F. Yacavone, MD

Accepting New Patients

Title(s): Director, Endoscopy Unit; Assistant Professor, Tufts University School of Medicine; Gastroenterologist
Department(s): Medicine, Gastroenterology
Appt. Phone: 617-636-5883
Fax #: 617-636-9292

Therapeutic endoscopy, endoscopic retrograde cholangiopancreatography (ERCP), endoscopic ultrasound (EUS), radiofrequency ablation (RFA) for barrett’s esophagus, endoscopic mucosal resection (EMR), endoluminal stenting

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617-636-5883