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

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

Dr. Fernando Membreno is a specialist in adult gastroenterology and adult transplant hepatology. Clinical interests for Dr. Membreno include alpha-1 antitrypsin deficiency, hepatitis C, and bile duct cancer (cholangiocarcinoma). His professional affiliations include Methodist Health System and Southwest General Hospital. Dr. Membreno 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 attended medical school at Autonomous University of Central America. Dr. Membreno's training includes a residency program at Staten Island University Hospital.

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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 is a gastroenterologist. Areas of particular interest for Dr. Polhamus include colonoscopy, acid reflux (GERD), and constipation. Dr. Polhamus is an in-network provider for Blue Cross/Blue Shield, Blue Cross Blue Shield Bronze, and Blue Cross Blue Shield HMO, as well as other insurance carriers. He attended medical school at the University of Texas Medical Branch School of Medicine. He trained at Wright-Patterson Medical Center for his residency. He is affiliated with Methodist Health System.

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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 an adult gastroenterology specialist in San Antonio, TX. He is conversant in Spanish. He is especially interested in crohn's disease, colonoscopy, and acid reflux (GERD). Dr. Hernandez is affiliated with Methodist Health System. After attending the University of California, Davis, School of Medicine, Dr. Hernandez completed his residency training at a hospital affiliated with the University of Texas. His patients gave him an average rating of 5.0 out of 5 stars. He is an in-network provider for Blue Cross/Blue Shield, Blue Cross Blue Shield Bronze, and Blue Cross Blue Shield HMO, in addition to other insurance carriers.

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

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

Dr. Oscar Ramirez is a specialist in adult gastroenterology. He works in Live Oak, TX and San Antonio, TX. He graduated from Francisco Marroquin University Faculty of Medicine. Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold are among the insurance carriers that Dr. Ramirez honors.

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

Dr. David Jones specializes in adult gastroenterology. Dr. Jones accepts Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold, in addition to other insurance carriers. He is a graduate of Philadelphia College of Osteopathic Medicine.

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Specializes in Adult Gastroenterology
12850 Toepperwein Road
Live Oak, TX
 

Dr. Hays Arnold is a specialist in adult gastroenterology. Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold are among the insurance carriers that Dr. Arnold takes. He graduated from the University of South Florida (USF) College of Medicine.

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

Dr. Roy Bell, who practices in San Antonio, TX, is a medical specialist in adult gastroenterology. Dr. Bell's average rating from his patients is 4.5 stars out of 5. He takes Blue Cross/Blue Shield, Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and more. He attended medical school at Louisiana State University School of Medicine in Shreveport.

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

Dr. Roberto Narvaez, who practices in Live Oak, TX and San Antonio, TX, is a medical specialist in adult gastroenterology. He studied medicine at Creighton University School of Medicine. Patient ratings for Dr. Narvaez average 3.5 stars out of 5. He honors 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
11485 Toepperwein Road; Suite 2
Live Oak, TX
 

Dr. Michael Piesman is a specialist in adult gastroenterology. Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold are among the insurance carriers that Dr. Piesman accepts. He is a graduate of Tufts University School of Medicine.

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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.
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