Gastrointestinal & Liver Disease Center

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Our Physicians

Dr. Hector Rodriguez-Luna

Dr. Hector Rodriguez-Luna is committed to providing his patients with the best gastro-intestinal care. He is a Diplomate of the American College of Internal Medicine and American Board of Gastroenterology. Following medical school, he completed a residency in internal medicine at Ochsner Foundation Hospital in Louisiana, and fellowship training in gastroenterology, liver diseases and liver transplantation at the VA/Good Samaritan Medical Center and Mayo Clinic in Arizona.

Dr. Rodriguez-Luna is certified in general gastroenterology procedures, such as colonoscopy and upper endoscopy.as well as advanced procedures such as enteroscopy, capsule endoscopies, Endoluminal Fundoplication™, and ERCP (Endoscopic Retrograde Cholangiopancreatography).

He also has special training in liver transplantation, liver diseases and pancreatobiliary disorders. He is fluent in English, Spanish and Italian. To stay knowledgeable of the latest treatment options available in the field, he maintains professional membership with the American College of Gastroenterology, the American Society for Gastrointestinal Endoscopy and The American Association for the Study of Liver Diseases. A published author, Dr. Rodriguez’s articles have appeared in multiple peer review journal publications and book chapters of international prestige on liver diseases and gastroenterology. Some journals where he has published are: Transplantation, American Journal of Transplantation, Current Opinion in Infectious Diseases, Digestive Diseases and Sciences, Clinics in Liver Diseases, and Minerva Gastroenterologica e Dietologica (Italy).

His research has been focused on: Gastrointestinal Endoscopy, State of the art imaging techniques and capsule endoscopy, Hepatitis B, Hepatitis C, Liver Diseases, Primary Biliary Cirrhosis, Hepatocellular carcinoma, Liver Transplantation and Portal and splenic vein thrombosis.

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Dr. Kandarp Patel

Dr. Kandarp Patel is Board Certified in Internal Medicine and in Gastroenterology by the American Board of Gastroenterology. Dr. Patel has obtained a Bachelor of Science in Cellular and Molecular Biology and Genetics, a Master of Physiology and Biophysics, and a Doctorate of Osteopathic Medicine. After graduating from Touro University College of Osteopathic Medicine, he completed an internal medicine residency at Banner Good Samaritan Medical Center in Phoenix. To further his knowledge, he accepted a Fellowship in Gastroenterology with Carl T. Hayden VA Medical Center and Banner Good Samaritan Medical Center. Dr. Patel, like Dr. Rodriguez-Luna and Dr. Ricardo Borsatto, believes in the same founding principles of commitment to quality and compassionate care. To stay up-to-date with the latest advancements in gastroenterology and internal medicine, he maintains memberships in many professional organizations, such as the American College of Gastroenterology, American Society of Gastrointestinal Endoscopy, American Gastroenterology Association, and Arizona Gastroenterology Society. Dr. Patel is trained in gastrointestinal endoscopy, Endoscopic Ultrasound and capsule endoscopy. He speaks English and Gujarati. He looks forward to providing each patient quality care.

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Dr. Ricardo Borsatto

Dr. Borsatto is Board Certified in Internal Medicine and in Gastroenterology by the American Board of Gastroenterology. After graduating from the Medicine faculty of Botucatu at the Sao Paulo State Univeristy in Brazil, he completed an internal medicine residency at The Kern Medical Center (a UCLA affiliated program) in Bakersfield, California.

After Internal medicine; he completed a Fellowship in Gastroenterology with Carl T. Hayden VA Medical Center and Banner Good Samaritan Medical Center.

He is trained in gastrointestinal endoscopy, pancreatobiliary disorders and capsule endoscopy. –Besides English, he speaks: Portuguese, Spanish and French.

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Dr. Jonathan S. Mellen

Jonathan S. Mellen, MD joined our practice in February, 2013.  He is a board certified Diplomate of the American Board of Internal Medicine and American Board of Gastroenterology.

He obtained a Bachelor of Science in Biological Basis of Behavior from the University of Pennsylvania in Philadelphia.  After graduating as a Medical Doctor from the State University of New York -Downstate Medical College, he completed an internal medicine Internship, Residency and Chief Residency at the University of California – Irvine Medical Center in California.  He also completed a Fellowship in Gastroenterology at the Carl T. Hayden VA Medical Center and Banner Good Samaritan Medical Center.

Dr. Mellen is certified in gastrointestinal endoscopy, pancreatobiliary disorders and capsule endoscopy. His main areas of research have been the surveillance colonoscopies and Hepatitis B.

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Nurse Practitioner, Wendy Beltran, FNP

Wendy Beltran, FNP is a Board certified Nurse Practitioner with specialty in Gastroenterology since 2008. She is a native of Texas and has been residing in Arizona since 1998. After graduating from Arizona State University in 2002 with a Bachelor of Science in Nursing, she worked as a registered nurse in perioperative services (Preoperative & PACU) and medical-surgical department. She then studied at Grand Canyon University in Phoenix, Arizona obtaining a Masters in Nursing with emphasis as a Family Nurse Practitioner in 2008. Upon graduation she received certification from American Nurses Credentialing Center. Prior to joining our practice, Wendy worked for 3 years as an inpatient gastrointestinal Nurse Practitioner at St. Joseph’s Hospital & Medical Center. In the fall of 2011, she joined Gastrointestinal & Liver Disease Center. As a nurse practitioner, she works in collaboration with the physicians to care for adults with a variety of gastrointestinal and liver disorders. She has had extensive training in gastroenterology by her collaborating gastroenterologists. She also has experience in family practice in the outpatient urgent care setting. Wendy’s expertise involves diagnosing, treating and managing digestive disorders. She has experience in managing inflammatory bowel disease, pancreatic/biliary disease, Celiac disease, GERD, liver disease, to include management and treatment of hepatitis C, steatohepatitis, and cirrhosis. She sees patients in the outpatient clinic. She is currently a member in good standing of American Gastroenterology Association. In her free time she enjoys spending time with her husband and children.