Meet the Clinical Team

Timothy Vavricka, M.D.

Timothy Vavricka, M.D. is a board-certified general surgeon with deep roots in Oklahoma and extensive experience in both civilian and military medicine. A 1997 graduate of Ada High School, Dr. Vavricka earned his Bachelor’s degree in Biochemistry from the University of Oklahoma in 2001. He went on to medical school where he received his Doctor […]

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Brad Pittman, PA-C

Brad Pittman, PA C, brings 19 years of medical experience providing compassionate, patient centered care across rural Oklahoma. A native of May, Oklahoma, he graduated from Fort Supply High School and earned his undergraduate degree from Northwestern Oklahoma State University in Alva before completing the University of Oklahoma Physician Associate Program in 2007. Pittman has […]

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Brian Gillis, D.O.

Brian Gillis, D.O., is a board-certified physician and surgeon with more than 25 years of experience in gastrointestinal health and surgical care. A native of Arnett, Oklahoma, he returns to Northwest Oklahoma to serve the communities that helped shape his early interest in medicine. Dr. Gillis is board certified by the American Osteopathic Board of […]

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Mark Mann, M.D.

Newman Healthcare Associates is proud to welcome Dr. Mark Mann to our medical team. Dr. Mann provides comprehensive family medicine services at our Shattuck Rural Health Clinic and is dedicated to delivering high-quality, patient-centered care close to home. Dr. Mann began seeing patients in Shattuck on January 8, 2026, and is currently accepting new patients. […]

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Roy Bankhead, M.D.

Advanced Urologic Care Newman Memorial Hospital is proud to offer comprehensive urology services for patients throughout Western Oklahoma. Led by board-certified urologist Dr. Roy W. Bankhead, our program provides advanced diagnosis, treatment, and surgical care for a wide range of urologic conditions affecting both men and women. Patients can now access specialized urologic procedures locally, reducing […]

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Brian Kliewer, MD

Cardiologist Dr. Brian Kliewer is a board-certifiedcardiologist dedicated to bringing advanced cardiovascular care to communities across Oklahoma. Raised in rural Oklahoma, Dr. Kliewer understands the unique challenges many patients face in accessing specialized heart care. His personal connection to rural healthcare inspired his commitment to improving the diagnosis, treatment, and long-term management of cardiovascular disease […]

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