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 - Main Hospital
 
 - Main Hospital

Adult Gastroenterology of Stillwater

Matt Blankenship, MD

Matt M. Blankenship, MD

Matt Blankenship, MD found his fascination with medicine and patient care at a young age, growing up as the son of a urologist. He watched his father with eager interest as he cared for his patients and the community around him. Dr. Blankenship wanted the same for his career. He chose the field of gastroenterology because it offered him a multifaceted experience in the practice of medicine...more.

Jeffery Blonsky, MD

Jeffery J. Blonsky, MD

Jeffery Blonsky, MD discovered his love for medicine at an early age. His passion for science and desire to impact people’s lives quickly laid the groundwork for his career as a physician. He chose gastroenterology as his subspecialty because it encompasses a broad spectrum of disorders, such as liver disease, acid reflux disease, and inflammatory bowel disease. He continues...more.

Christian D. Clark, MD

Christian D. Clark, MD

For Christian Clark, MD, a career in medicine was inevitable. Growing up among a family of doctors, he thrived in an environment that cultivated his interest in science, chemistry, and solving puzzles. When it came time to choose a specialty, he chose gastroenterology, finding the field’s potential for evolutionary advancements and rapid growth in the treatment of GI disorders intriguing...more.

Brandon A. Conkling, DO

Brandon A. Conkling, DO

Brandon Conkling, DO has always been passionate about helping people, so when it came time to choose a career, being a doctor seemed like a natural decision. He pursued his medical degree at Oklahoma State University College of Osteopathic Medicine in Tulsa, Oklahoma. When he graduated medical school in 1996, Dr. Conkling completed his internship and residency in...more.

Douglas B. Kliewer, MD

Douglas B. Kliewer, MD

Douglas Kliewer, MD chose a career in medicine because he truly appreciates the opportunity to care for others and engage in scientific research and study to help solve his patients’ medical concerns. When choosing a subspecialty, gastroenterology seemed like the natural choice. Dr. Kliewer recalls, “There was always something to do and the advancements in the field were so groundbreaking and impactful.”...more.

Kevin M. McNamara, MD

Kevin M. McNamara, MD

Kevin McNamara, MD was encouraged to become a doctor by his 4th grade teacher, who observed his compassion toward friends and classmates. He was also drawn to math and science in school, so medicine seemed like a good fit. He chose gastroenterology as his subspecialty because the field offers so much diversity. When he looks back at that deciding moment...more.

Markham L. Nightengale, MD

Markham L. Nightengale, MD

Markham Nightengale, MD always knew medicine was his calling. He comes from a long line of doctors who helped shape his curiosity for science into a career as a physician. When it came time to choose a specialty, gastroenterology was the obvious choice. Dr. Nightengale says, “GI is a challenging field and I am someone who likes a challenge.” He also appreciates the opportunity to...more.

Aatish Patel, MD

Aatish Patel, MD

Aatish M. Patel, MD is a lifetime student of health who has followed a dedicated path toward formal training in medicine, specializing in gastroenterology/hepatology. He has authored several articles in medical journals, presented at a CME-accredited conference, co-authored a poster of distinction (top 10%) at Digestive Disease Week, and he remains an active member of multiple professional medical societies...more.

Paul D. Stanton, MD

Paul D. Stanton, MD

Paul Stanton, MD pursued a career in medicine because he enjoys the dynamic interaction between people and science. The field of gastroenterology intrigued him early on, when he discovered the vast number of treatments available for GI disorders—he felt energized to be a part of an ever-evolving field of medicine. Gastroenterology also gives Dr. Stanton the opportunity to...more.

Patrick R. Volak, MD

Patrick R. Volak, MD

Patrick Volak, MD knew from the age of five that he wanted to become a doctor. His passion for science, desire to serve others, and love of challenges made his path to a career in medicine a simple choice. He joined Adult Gastroenterology Associates (AGA) in 1991 and co-founded Tulsa Endoscopy Center with three fellow physicians in 2003 to offer patients...more.