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Consultation
Our physicians provide consultative services for a myriad of health conditions. They stretch out these services across much of Glendale, Peoria and Sun City in the following locations: Arrow
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32 posts.
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Endoscopic Ultrasound (EUS)
Endoscopic Ultrasound Endoscopic ultrasonography (EUS) is used to examine your esophageal and stomach linings as well as the walls of your upper and lower gastrointestinal tract. The upper t
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Endoscopic Retrograde Cholangiopancreatography (ERCP)
ERCP What is ERCP? Endoscopic retrograde cholangiopancreatography, or ERCP, is a specialized technique used to study the bile ducts, pancreatic duct and gallbladder. Ducts are drainage route
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Small Bowel Capsule Endoscopy
Capsule Endoscopy Capsule Endoscopy lets your doctor examine the lining of the middle part of your gastrointestinal tract, which includes the three portions of the small intestine (duodenum,
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Percutaneous Endoscopic Gastromy (PEG)
PEG PEG stands for percutaneous endoscopic gastrostomy, a procedure in which a flexible feeding tube is placed through the abdominal wall and into the stomach. PEG allows nutrition, fluids a
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Upper Endoscopy (EGD)
EGD Esophagogastroduodenoscopy (EGD) is an examination of the lining of the esophagus, stomach, and upper duodenum with a small camera (flexible endoscope) which is inserted down the throat.
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Colonoscopy
Colonoscopy Colonoscopy is a test that allows your doctor to look at the inner lining of your large intestine (rectum and colon). He or she uses a thin, flexible tube called a colonoscope to
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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 internshi
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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 inte
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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 Nor
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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 Gastroenter
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Gastroparesis Diet
Gastroparesis is the medical term for delayed stomach emptying. During the process of digestion, the stomach must contract to empty itself of food and liquid. Normally, it contracts about th
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GERD (Gastroesophageal Reflux Disease) Diet
Symptoms of reflux occur when the specialized muscle between the esophagus and stomach weakens and allows stomach acid to splash up into the esophagus. These symptoms include heartburn, ches
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Gluten Free
Gluten is the generic name for certain types of proteins contained in the common cereal grains wheat, barley, rye and their derivatives that must be eliminated in patients with celiac diseas
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High Fiber Diet
Dietary fiber is the part of a plant which is not digested by the stomach or small intestine. Rather, it arrives unchanged in the colon. There, it does two things: It provides bulk or rougha
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Polyp Prevention
Factors in Polyp Prevention There are literally thousands of chemicals and substances in the foods we eat. Each person eats different types and amounts of food, so doing medical studies to d
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2gm Na diet
Sodium is essential electrolyte in the body. It is a mineral that helps the body regulate fluid balance. Under certain conditions, excess sodium can cause the body to retain too much fluid.
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Our Providers
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Published patient services
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Arrowhead Gastroenterology Associates
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Accepted Insurance
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What to Expect During a Colonoscopy
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GERD vs. Occasional Heartburn: Understanding the Difference
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IBS vs. IBD: Understanding the Differences
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Pancreatitis Symptoms: When to Seek Medical Care
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What Are Colon Polyps? What Patients Should Know
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PEG Feeding Tube Guide for Patients and Caregivers
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Upper Endoscopy (EGD): What to Expect
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Understanding Fatty Liver Disease: A Patient Guide
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ERCP vs. EUS: Understanding Two Specialized Endoscopic Procedures
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Capsule Endoscopy: What It Is and How It Differs From Other Tests
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