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We found 9 gastroenterologists who accept United Healthcare Gold EPO near Live Oak, TX.

Dr. Fernando Enrique Membreno, MD
Specializes in Adult Gastroenterology, Adult Transplant Hepatology
12850 Toepperwein Road
Live Oak, TX
 

Dr. Fernando Membreno is an adult gastroenterologist and adult transplant hepatologist. His areas of expertise include the following: alpha-1 antitrypsin deficiency, hepatitis C, and bile duct cancer. His professional affiliations include Methodist Health System and Southwest General Hospital. Dr. Membreno is in-network for Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold, as well as other insurance carriers. Before completing his residency at Staten Island University Hospital, Dr. Membreno attended medical school at Autonomous University of Central America.

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Clinical interests: Cirrhosis, Liver Cancer, Bile Duct Cancer, Hepatitis B, Medication, Hepatitis C, Hemochromatosis, ... (Read more)

Dr. Clinton Dustin Polhamus, MD
Specializes in Adult Gastroenterology
12709 Toepperwein Road; Suite 301
San Antonio, TX
 

Dr. Clinton Polhamus works as an adult gastroenterologist in San Antonio, TX. Areas of particular interest for Dr. Polhamus include colonoscopy, acid reflux (GERD), and constipation. He is professionally affiliated with Methodist Health System. After completing medical school at the University of Texas Medical Branch School of Medicine, he performed his residency at Wright-Patterson Medical Center. He accepts Blue Cross/Blue Shield, Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and more.

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Clinical interests: Acid Reflux, Gastrointestinal Problems, Consultation, Colonoscopy, Constipation

Dr. Ricardo Aguirre Hernandez, MD
Specializes in Adult Gastroenterology
12709 Toepperwein Road; Suite 301
San Antonio, TX
 

Dr. Ricardo Hernandez is a gastroenterologist. He has a 5.0 out of 5 star average patient rating. In his practice, Dr. Hernandez focuses on crohn's disease, colonoscopy, and acid reflux (GERD). He is affiliated with Methodist Health System. He is an in-network provider for several insurance carriers, including Blue Cross/Blue Shield, Blue Cross Blue Shield Bronze, and Blue Cross Blue Shield HMO. He studied medicine at the University of California, Davis, School of Medicine. Dr. Hernandez trained at a hospital affiliated with the University of Texas for his residency. In addition to English, he speaks Spanish.

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Clinical interests: Acid Reflux, Gastrointestinal Problems, Crohn's Disease, Colonoscopy

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Specializes in Adult Gastroenterology
11485 Toepperwein Road; Suite 2
Live Oak, TX
 

Dr. Oscar Ramirez is a gastroenterologist in Live Oak, TX and San Antonio, TX. He accepts several insurance carriers, including Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold. Dr. Ramirez graduated from Francisco Marroquin University Faculty of Medicine.

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Specializes in Adult Gastroenterology
11485 Topperwein; #2
San Antonio, TX
 

Dr. David Jones' specialty is adult gastroenterology. Dr. Jones is an in-network provider for Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold, in addition to other insurance carriers. He graduated from Philadelphia College of Osteopathic Medicine.

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Specializes in Adult Gastroenterology
12850 Toepperwein Road
Live Oak, TX
 

Dr. Hays Arnold practices adult gastroenterology. Dr. Arnold attended medical school at the University of South Florida (USF) College of Medicine. He takes several insurance carriers, including Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold.

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Specializes in Adult Gastroenterology, Other
12602 Toepperwein Road; Suite 208
San Antonio, TX
 

Dr. Roberto Narvaez's specialty is adult gastroenterology. Patient ratings for Dr. Narvaez average 3.5 stars out of 5. He accepts several insurance carriers, including Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold. Dr. Narvaez studied medicine at Creighton University School of Medicine.

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Specializes in Adult Gastroenterology
11485 Toepperwein Road; Suite 2
Live Oak, TX
 

Dr. Michael Piesman is an adult gastroenterology specialist. He graduated from Tufts University School of Medicine. He accepts Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold, in addition to other insurance carriers.

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Specializes in Adult Gastroenterology
8601 Village Drive; Suite 208
San Antonio, TX
 

Dr. Roy Bell practices adult gastroenterology. He graduated from Louisiana State University School of Medicine in Shreveport. Dr. Bell is rated highly by his patients. He is in-network for Blue Cross/Blue Shield, Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and more.

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What is Gastroenterology?

A gastroenterologist is a doctor that specializes in the normal function and diseases of the digestive tract, which includes the stomach, intestines, spleen, pancreas, and liver. As a specialty, gastroenterology is the study of how food moves through the body, how nutrients are absorbed by the body, and how waste is removed by the body. A few of the conditions that a gastroenterologist might treat are:
  • ulcerative colitis (a condition where inflammation and sores affect the lower intestine)
  • gallbladder disease (where bile stored in the gallbladder thickens and causes inflammation or gallstones)
  • gastroesophageal reflux disease, or GERD (stomach acid flows back into the throat and causes a burning sensation and tissue damage)

One unique trait that really sets gastroenterologists apart is their training and skill with endoscopy, a procedure where tiny flexible tubes are inserted into the body. These tubes are equipped with lights and cameras to provide the practitioner with a close, inside look at what is going on inside the patient’s body. Tools can even be inserted through the tubes to perform certain procedures, such as removing polyps or cancers, stretching open passageways that have narrowed, or applying lasers to stop bleeding.

Gastroenterologists do not perform surgery, but they do perform endoscopic procedures, as well as biopsies to determine if cancer is affecting the digestive tract. Although other physicians can use endoscopes, gastroenterologists devote a significant portion of their medical training and practice to endoscopy. They learn how and when to use endoscopy, the safest and most efficient methods to use, and how to interpret what they see through the endoscope.