
Gastroenterology & Clinical Nutrition
Philip O. Katz, MD
Chairman and Program Director, Division of Gastroenterology; Associate Program Director, Internal Medicine Residency Program
Dr. Katz received his medical degree from the Bowman Gray School of Medicine at Wake Forest University in Winston-Salem, North
Carolina. He served his residency and chief residency in internal medicine, followed by a fellowship in gastroenterology at
the Bowman Gray School of Medicine. He is board certified in internal medicine and gastroenterology. Dr. Katz has brought
his state-of-the-art esophageal testing laboratory to Einstein and is developing an active clinical and research practice
in this area. His research interests include all aspects of gastroesophageal reflux disease, including nocturnal recovery
of gastric acid secretion during proton pump inhibitor therapy and esophageal pain perception. Dr. Katz is a practicing clinician
with active teaching and editorial positions. In addition to lecturing on many gastroenterology-related topics, Dr. Katz is
an editorial reviewer for Annals of Internal Medicine, American Journal of Gastroenterology, Gastroenterology, Journal of
the American Geriatric Association, and Digestive Diseases and Sciences. He has contributed to the publication of over 120
peer-reviewed papers, numerous abstracts, books, book chapters, and monographs.
Richard Menin, MD has been in the practice of gastroenterology at Albert Einstein Medical Center continuously since 1978. Although in private
practice with two associates, he is actively involved in the teaching program both in Internal Medicine and Gastroenterology.
He has a special interest in gastroenterology malignancies and has headed up the gastroenterology cancer committee since the
early 80's. Dr. Menin leads a biweekly cancer management conference and have sponsored many colon cancer screening programs.
Dr. Menin completed his gastroenterology fellowship at Temple University School of Medicine. He is Board certified in internal
medicine and gastroenterology
Mustafa Alnounou, MD is a graduate of Damascas University School of Medicine. His internship and first year of residency training was conducted
at the University of Illinois, Michael Reese Hospital, in Chicago. He completed his internal medicine residency at St. Vincent
Hospital in Indianapolis, Indiana. His gastroenterology fellowship training was conducted at Indiana University followed
by many years as a general internist in the private practice of medicine. Subsequently, he participated in a one-year hepatology
fellowship at Albert Einstein Medical Center. He also completed an advanced interventional endoscopy fellowship at Fox Chase
Cancer Center in March 2007.
Robert S. Dudnick, MD is a graduate of the University of Medicine and Dentistry in New Jersey and completed his internship at the University of
Michigan Medical Center. He then completed his internal medicine residency at Mount Sinai Medical Center in New York followed
by a fellowship in gastroenterology at Thomas Jefferson University Hospital. Dr. Dudnick is Board certified in both internal
medicine and gastroenterology.
Daniel Sher, MD a voluntary faculty member is Clinical Assistant Professor of Medicine, Temple University School of Medicine and Drexel University
School of Medicine and a member of Philadelphia Gastroenterology Consultants. He is an active member of the teaching faculty,
Dr. Sher has participated in many multicenter clinical trials and has been a co-author of several publications involving intragastric
pH monitoring. The gastroenterology fellows rotate on his hospital consult service and learn ERCP skills from him.
Hepatology
Santiago Munoz, MD
Chairman, Division of Hepatology; Director, Center for Liver Disease; Medical Director, Liver Transplantation Program
Dr. Munoz is principal investigator of a NIH trial of combination therapy in primary biliary cirrhosis and the recipient of
an American Liver Foundation Investigator of the Year Award. He is a member of the Publications Committee of Liver Surgery
and Transplantation and a Fellow of the American College of Physicians. Dr. Munoz is co-investigator of a NIH grant to study
acute liver failure. He completed his training at Johns Hopkins University Hospital and is the author of over 100 publications,
review articles and book chapters.
Kenneth Rothstein, MD is Associate Director of the Center for Liver Disease. Dr. Rothstein is a member of the Medical Advisory Committee of the
Delaware Chapter of the American Liver Foundation and the Board of the Hepatitis B Foundation. He is principal investigator
for various new treatments for Hepatitis C, including a new protocol for patients co-infected with Hepatitis C and HIV. He
is a member of Phi Beta Kappa. Dr. Rothstein is a graduate of Emory University School of Medicine, the Emory internal medicine
residency program, and the gastroenterology and hepatology fellowship programs at Temple University Hospital.
Victor Araya, MD is a graduate of George Washington University School of Medicine. He completed his internal medicine residency at Temple
University School and hepatology fellowship at the University of Florida School of Medicine. Dr. Araya was an assistant professor
of medicine at the University of Pittsburgh, Division of Transplant Medicine and Director of clinical trial section for viral
hepatitis. He is currently developing several clinical trials for hepatitis C and B and coordinates the Division’s database.
Eyob Feyssa, MD, MPH received his medical degree from the Jimma Institute of Health Sciences in Ethiopia. He completed his internal medicine residency
training at Harbor Hospital Center in Baltimore where served as Chief Medical Resident and received the Tah-Hsiung Hsu, MD
director's award. Dr. Feyessa completed training in hepatology at the Sammy Davis Jr National Liver Institute of the University
of Medicine and Dentistry of New Jersey Liver Center.
Ashraf Malek, MD received his medical degree from the Sir Salimullah Medical College in Bangladesh. He completed his internal medicine residency
training at Long Island College Hospital and hepatology training at the University of Medicine and Dentistry of New Jersey
Liver Center.
Mumtaz Niazi, MD is a graduate of Punjob Medical College and completed his internal medicine residency training at Long Island College of Medicine,
New York. He completed hepatology training at the University of Medicine and Dentistry of New Jersey.