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Our Team

Clinical Faculty Research Team   Advanced Practice Providers Administration Fellows

Bandar M. Al-Judaibi, MBBS

Bandar M. Al-Judaibi, MBBS

Clinical expertise: Liver transplant (pre- and post-transplant care), cirrhotic and chronic liver disease, viral and autoimmune hepatitis, hepatic encephalopathy, hepatobiliary malignancies and other liver diseases

Tanya Bruckel, MD

Tanya Bruckel, MD
Associate Director of Gastroenterology, Hepatology, and Endoscopy at UR Sawgrass

Clinical expertise: General gastroenterology and hepatology with a special interest in inflammatory bowel disease

Arthur J. DeCross, MD

Arthur J. DeCross, MD

Clinical expertise: Inflammatory bowel diseases, including Crohn's disease and ulcerative colitis, celiac disease, and the specialized nutritional support of gastrointestinal disorders

Melissa Hershman, MD

Melissa Hershman, MD

Clinical expertise: General gastroenterology and hepatology

Jonathan Huang, DO, AGAF

Jonathan Huang, DO, AGAF
Director, Digestive and Liver Disease Center for Research

Clinical expertise: Viral hepatitis, hepatic encephalopathy, autoimmune hepatitis, hepatobiliary malignancies, and other liver diseases

Vivek Kaul, MD, FACG

Vivek Kaul, MD, FACG

Clinical expertise: Advanced therapeutic endoscopy, Endoscopic Ultrasound, ERCP, Esophageal Endotherapy and Hepatobiliary disease

Shivangi T. Kothari, MD

Shivangi T. Kothari, MD
Associate Director of Endoscopy

Clinical expertise: Interventional endoscopic ultrasound, advanced therapeutic ERCP, esophageal endotherapy for Barrett’s esophagus, double balloon enteroscopy, and pancreatic-biliary disorders

Research interests: Development of EUS FNA techniques, endoscopic ablation and therapy of Barrett’s esophagus, and evaluation of new devices and technology in the diagnosis and treatment of biliary and pancreatic diseases

Truptesh H. Kothari, MD, MS

Truptesh H. Kothari, MD, MS
Director, Developmental Endoscopy Laboratory

Dr. Kothari leads the Bariatric Endoscopy Program at Strong Memorial Hospital.

Clinical expertise: Intragastric balloon placement, revision procedure for gastric bypass (e.g., endoscopic outlet reduction); interventional endoscopic ultrasound, diagnostic and therapeutic ERCP, intraluminal stent placement, esophageal endotherapy for Barrett’s esophagus, Achalasia, Zenker’s myotomy, and pancreatic-biliary disorders

Marie Laryea, B.Sc., M.D.C.M.

Marie Laryea, BSc, MDCM

Clinical expertise: Liver transplant (pre- and post-transplant care), cirrhotic and chronic liver disease, viral and autoimmune hepatitis, hepatic encephalopathy, hepatobiliary malignancies and other liver diseases

Mark A. Levstik, M.B.B.Ch., B.A.O.

Mark A. Levstik, MBBC, LRCPI, LRCSI, BAO, FRCP(C)
Chief, Comprehensive Liver Center
Medical Director, Liver Transplantation
Interim Chief, Division of Gastroenterology & Hepatology

Clinical expertise: Liver transplant (pre- and post-transplant care), cirrhotic and chronic liver disease, viral and autoimmune hepatitis, hepatic encephalopathy, hepatobiliary malignancies and other liver diseases

Research interests: Liver transplant quality, live donor liver transplantation and non-invasive liver fibrosis measurement (FibroScan)

Danielle Marino, MD

Danielle Marino, MD
Medical Director of Gastroenterology, Hepatology, and Endoscopy at UR Sawgrass
Program Director of the Gastroenterology Fellowship Training Program

Clinical expertise: All aspects of general gastroenterology and liver disease, with particular interest in eosinophilic esophagitis, inflammatory bowel disease, colon cancer screening and prevention, and the diagnosis and management of hereditary cancer syndromes

Research interests: Quality improvement

Gopal Ramaraju, MD

Gopal Ramaraju, MD

Clinical expertise: Liver transplant (pre- and post-transplant care), cirrhotic and chronic liver disease, viral and autoimmune hepatitis, hepatic encephalopathy, hepatobiliary malignancies and other liver diseases

Lawrence J. Saubermann, MD

Lawrence J. Saubermann, MD
Director of the Inflammatory Bowel Disease Program

Clinical expertise: Inflammatory bowel disease

Brandon S. Sprung, MD

Brandon S. Sprung, MD
Associate Director of the Gastroenterology Fellowship Training Program

Clinical expertise: General gastroenterology; interest in inflammatory bowel disease and Barrett's esophagus

Asad Ullah, MD

Asad Ullah, MD
Chief of Endoscopy

Clinical expertise: Advanced endoscopic procedures, including endoscopic ultrasound and the study of bile and pancreas ducts (ERCP); pancreaticobiliary disease, GI malignancies and gastroenterology consultations

Mohammed Ullah, MD

Mohammed Ullah, MD

Clinical instructor (not accepting patients at this time)

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Research Faculty & Team Members

Jonathan Huang, DO, AGAF

Jonathan Huang, DO, AGAF
Director, Digestive and Liver Disease Center for Research

Research interests: Viral hepatitis, hepatic encephalopathy, autoimmune hepatitis, hepatobiliary malignancies, and other liver diseases

Lawrence J. Saubermann, MD

Lawrence J. Saubermann, MD
Director of the Inflammatory Bowel Disease Program

Research interest: Intestinal mucosal immune system and how it is involved in inflammatory bowel diseases, such as Crohn's disease, ulcerative colitis, microscopic/lymphocytic colitis, and celiac sprue

David Yule

David Yule, PhD

Research interest: Intracellular calcium signaling in cells

Krystle Bittner

Krystle Bittner
Human Subjects Research Coordinator

Lauren Ott

Lauren Ott
Human Subjects Research Coordinator

Chelsea DiBella

Chelsea DiBella
Senior Human Subjects Research Coordinator

Munazza Zakir-Ullah

Munazza Zakir-Ullah
Human Subjects Research Coordinator

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Advanced Practice Providers

Elise Bauman

Elise N. Bauman, NP

MacKenzie Both

MacKenzie Both, PA

Michael Colicchio

Michael Colicchio, PA

Jessica D’Acquisto

Jessica D’Acquisto, NP

Allison D'Angelo

Allison D'Angelo, PA

Colin Donahoe

Colin Donahoe, PA

Sarah Enslin

Sarah Enslin, RPA-C

Victoria Howard

Victoria Howard, PA-C

Katherine Rinehart

Katherine Rinehart, PA

Ruhi Sondhi

Ruhi Sondhi, NP

Stephanie Santa

Stephanie Santa, NP

Jacob Scott

Jacob Scott, PA

Mary Vetter

Mary Vetter, NP

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Administration

Richard Padula

Richard Padula, MS
Division Administrator

Denise Chamberlin

Denise Chamberlin, BSN, RN
Nurse Manager for Sawgrass GI

Rossana Navarra

Rossana Navarra
Interim Nurse Manager for AC4-GI

Wendy Johnson

Wendy Johnson, MS
Administrator-Practice Manager

Robyn Palmer

Robyn Palmer, MPA
Administrator

Jessica DeLaura

Jessica DeLaura, BA
Financial Analyst

Melissa Slusher

Melissa Slusher, MS
Administrative Assistant

Ashley Akalski

Ashley Akalski
Administrative Assistant

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Fellows

Elliot Graziano, MD

Elliot Graziano, MD

Residency
University of Minnesota Internal Medicine Residency

Medical School
University of Buffalo Medical School

Amulya Penmetsa, MD

Amulya Penmetsa, MD

Residency
SUNY Upstate Internal Medicine Residency/Chief Resident

Medical School
Florida International/American Univ. of Antigua Medical School

Christopher Walker, MD

Christopher Walker, MD

Residency
University of Rochester School of Medicine and Dentistry

Medical School
Eastern Virginia Medical School

Nicholas Bartell, MD

Nicholas Bartell, MD

Residency
University of Rochester School of Medicine and Dentistry

Medical School
New York Medical College

Matthew Berger, MD

Matthew Berger, MD

Residency
Stony Brook University School of Medicine in Stony Brook, New York

Medical School
St. George’s University School of Medicine/Grenada

Ari Young, MD

Ari Young, MD

Residency
Icahn School of Medicine at Mount Sinai Beth Israel, New York NY

Medical School
St. George’s University School of Medicine/Grenada

Janice Cheong, MD

Janice Cheong, MD

Residency
University of Rochester School of Medicine and Dentistry

Medical School
Stony Brook School of Medicine

Edwin Lee, MD

Edwin Lee, MD

Residency
Yale NHH Bridgeport Hospital, Bridgeport CT

Medical School
Yale NHH Bridgeport Hospital, Bridgeport CT

Anjanet Perez-Colon, MD

Anjanet Perez-Colon, MD

Residency
Icahn School of Medicine at Mount Sinai Beth Israel, New York NY

Medical School
Universidad Central del Caribe School of Medicine

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