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We found 8 gastroenterologists who accept Humana Platinum 500/HMO Premier 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 sees patients in San Antonio, TX and Live Oak, TX. His medical specialties are adult gastroenterology and adult transplant hepatology. Dr. Membreno's education and training includes medical school at Autonomous University of Central America and residency at Staten Island University Hospital. Areas of expertise for Dr. Membreno include alpha-1 antitrypsin deficiency, hepatitis C, and bile duct cancer (cholangiocarcinoma). He is in-network for Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold, in addition to other insurance carriers. His professional affiliations include Methodist Health System and Southwest General 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 an adult gastroenterologist. Areas of expertise for Dr. Polhamus include colonoscopy, acid reflux (GERD), and constipation. He is professionally affiliated with Methodist Health System. He obtained his medical school training at the University of Texas Medical Branch School of Medicine and performed his residency at Wright-Patterson Medical Center. 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.

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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 sees patients in San Antonio, TX. His medical specialty is adult gastroenterology. He is conversant in Spanish. His clinical interests encompass crohn's disease, colonoscopy, and acid reflux (GERD). Dr. Hernandez is professionally affiliated with Methodist Health System. He studied medicine at the University of California, Davis, School of Medicine. His training includes a residency program at a hospital affiliated with the University of Texas. On average, patients gave Dr. Hernandez a rating of 5.0 stars out of 5. Blue Cross/Blue Shield, Blue Cross Blue Shield Bronze, and Blue Cross Blue Shield HMO are among the insurance carriers that Dr. Hernandez honors.

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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 an adult gastroenterologist in Live Oak, TX and San Antonio, TX. Dr. Ramirez is an in-network provider for several insurance carriers, including Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold. He is a graduate of Francisco Marroquin University Faculty of Medicine.

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

Dr. David Jones' medical specialty is adult gastroenterology. He takes Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold, in addition to other insurance carriers. He studied medicine at Philadelphia College of Osteopathic Medicine.

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Specializes in Adult Gastroenterology
12850 Toepperwein Road
Live Oak, TX
 

Dr. Hays Arnold's specialty is adult gastroenterology. Dr. Arnold is a graduate of the University of South Florida (USF) College of Medicine. He takes Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold, as well as other insurance carriers.

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

Dr. Roberto Narvaez's area of specialization is adult gastroenterology. He is rated 3.5 stars out of 5 by his patients. Dr. Narvaez is an in-network provider for Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, Blue Cross Blue Shield Gold, and more. He 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 gastroenterologist. He is in-network for several insurance carriers, including Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold. He studied medicine at 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.