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Our Providers

Sukhdeep Padda, MD

Dr. Sukhdeep Padda is the founder member of Arrowhead Gastroenterology Associates.  Prior to starting private practice, Dr.Padda was an Assistant Professor of Clinical Medicine in Gastroenterology at the University of Arizona.  He completed his residency in Internal Medicine at the University of Arizona Health Sciences Center and then a fellowship in …

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Vikram Singh , MD

Dr. Vikram Singh joined Arrowhead Gastroenterology in 2009 after finsihing fellowship at the University of Arizona in Tucson.  He grew up in Cincinnati, OH and completed medical school at Northeastern Ohio Universities College of Medicine at the combined BS/MD program with University of Akron.  He completed his residency at Case Western University.  …

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Enrique Valdivia, MD

Dr. Enrique Valdivia is orginally from Peru where he completed his medical degree at Peruvian University Cayetano Heredia, School of Medicine. He completed his post-graudate training in internal medicine and gastroenterology at Henry Ford Hospital in 2003. During fellowship he received training in therapeutic biliary endoscopy (ERCP) and liver diseases. …

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Anthony Merrill, DO

Dr. Anthony Merrill is a fourth generation Arizonan and is proud to have done his training here locally. He graduated from Arizona College of Osteopathic Medicine and completed his internship, Internal Medicine residency and Gastroenterology fellowship through the combined Banner Good Samaritan/Carl T. Hayden VA Medical Center program.  Dr. Merrill …

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