Sameer Islam, MD

Sameer Islam was born in Malone, New York but grew up in his home town of Odessa, Texas.

He completed his undergraduate studies at the University of Texas in Austin where he graduated with honors. He completed both his medical degree (MD) and masters of business association (MBA) at Texas Tech University Health Sciences Center and Texas Tech Rawls School of Business, respectively.

After completing his internal medicine training at Texas Tech University, he continued his training in gastroenterology at Mayo Clinic where he was promoted to the academic rank of Assistant Professor of Medicine.

In his free time, he loves reading and writing, spending time with his family, and competing in CrossFit. His medical interests include Barrett’s esophagus, inflammatory bowel disease, irritable bowel syndrome, small bowel diseases, and liver disease (hepatitis or other autoimmune conditions). Feel free to contact his office to schedule an appointment.

Joseph Hancock, MD

Joseph Hancock completed his undergraduate studies at the University of Southern California.  He completed his medical degree (MD) with distinction and internal medicine residency at the Hahnemann University and Hospital in Philadelphia, PA.  Dr. Hancock completed his fellowship in gastroenterology at the Naval Hospital in Bethesda, MD in 1982.  During his personal time, Dr. Hancock enjoys flying his Baron Beechcraft 58P, skiing and swimming.  Dr. Hancock also serves as an executive board member on the South Plains Counsel of Boy Scouts of America.  He and his family have grown up in scouts and have represented Boy Scouts across the country.

Vanessa Costilla, MD

Vanessa Costilla completed her undergraduate studies at Rice University in Houston, Texas.  She completed her medical degree at Texas Tech University School of Medicine in Lubbock, Texas and her residency at Mayo Clinic in Scottsdale, Arizona.  Dr. Costilla completed her gastroenterology fellowship at the University of Texas Health Sciences Center in San Antonio, Texas where she was the chief fellow.  In her free time,  Dr. Costilla enjoys reading, cooking, hiking and spending time with her family.