Welcome to Bristow Medical Center!

A message from Dr. Mark Brandenburg, M.D., Medical Director about Bristow Medical Center’s excellence in patient care.

The Bristow Medical Center Group is a unique team of skilled, experienced clinicians offering excellence in patient care through its medical expertise, services, and exceptional patient relations. Located within the Bristow Medical Center, we are the only medical group in the Bristow area to offer the complete spectrum of medical services from pediatrics to geriatrics, urgent care, EM, and inpatient services.

As active members of the Bristow community, we ensure a continuum of care by working closely with you and your providers. Our clinical team is diligent in answering your questions and makes each patient feel comfortable at each stage of care. We also provide patients with updates on vaccinations, flu shots, and well visits. It is our commitment to patient care that we strive to deliver a medical home for you and your family.

Meet The Medical Team

Daniel D. Fields, M.D.

Daniel D. Fields, M.D., is a California native, who earned his undergraduate degree in Chemistry from California State University, Long Beach, completed medical school at Loma Linda University School of Medicine, and then moved to Tulsa for residency training. Following residency training, Dr. Fields was invited to remain with Family Medical Care of Tulsa as a clinic physician and became a faculty member of the residency program from which he graduated. He is board certified in Family Medicine.

Desiring to spend more time with his family as his children were growing, he came on staff with the Bristow Emergency Department in 2003. Dr. Fields has seven children and greatly enjoys spending time with his family. Together they have served for several years in leading a Sunday afternoon Bible study and singing time at an Assisted Living Center near their home. He and his wife, Marcia, have homeschooled their children, which has brought much joy and satisfaction as they help them to prepare for their future. They also enjoy family vacations, working together outside, and playing tennis.




Bradley D. Lowery, MD

Bradley D. Lowery, MD is a Tulsa native. He graduated from the University of Oklahoma in Norman with a Bachelor’s Degree in Chemical Engineering. Dr. Lowery then received his Medical Degree from University of Oklahoma, Tulsa, in 1988.  His Family Practice training was performed at University of Oklahoma, Tulsa. He is board certified in Family Medicine and has practiced Emergency and Hospitalist Medicine at Bristow Medical Center since 2006.

Prior to joining Bristow Medical Center, Dr. Lowery was with the Utica Park Clinic OMNI medical group, in Tulsa. He has taken several medical mission trips to Central America as well as Indonesia. During his time at OU in Norman, he played Trombone with the Pride of Oklahoma marching band. Dr. Lowery and his wife are raising their 5 children in Tulsa.






Ashley Yuras, APRN-CNP received her Bachelors of Science in Nursing at Langston University in 2009, and her Masters of Science in Nursing was completed with the University of South Alabama in 2015. She is board certified in both Family Medicine and Adult-Geriatrics. She has been in practice since 2015 as a full-time Nurse Practitioner at Bristow Medical Center and CORE Hospital in the emergency department, and hospitalist service.

Ashley grew up in a small Oklahoma town, and after working and being trained in a large trauma center for several years, has followed her passion for working in a rural emergency medicine setting. Ashley has a special interest in Trauma Medicine, having worked at Saint Francis as a trauma nurse educator teaching the Trauma Nursing Care Course (TNCC) and training new nurses to become acute care trauma nurses. Her awards include March of Dimes Nurse of the Year Award in 2011, Florence Nightingale Award for excellence in nursing, and Mentor of the Year at Saint Francis in 2013.




Jacqueline Giudice, APRN-CNP, FNP-BC

Jacqueline Giudice, APRN-CNP is a Board Certified Family Nurse Practitioner (American Academy of Nurse Practitioners) and is affiliated with the American Association of Critical Care Nurses. She is a Broken Arrow native who received her undergraduate degree from Langston University, Tulsa, OK in 2004 and the graduate degree from Frontier Nursing University in Hyden, KY in 2015. After becoming a Board Certified Nurse Practitioner, Jacqueline joined Bristow Medical Center in Bristow and CORE Hospital in Jenks, providing health care services as an Emergency Medicine Provider and Hospitalist.

Jacqueline began her career in healthcare working as a Medical Assistant in a family practice clinic. She then worked several years as a Nurse Tech, Registered Nurse, Director of Clinical Services, and as a Certified Critical Care Nurse in various Intensive Care Units.  She was a Code Blue nurse and has experience mentoring several nurses in CICU.  Jacqueline is a recipient of the Mentor Award in 2010 at St. Francis Hospital, Spirit of Nursing Award, and Most Outstanding student from Langston University. She enjoys traveling abroad and has been to India, Mexico, and Jamaica on medical mission trips. She has a passion for teenagers and volunteers medical coverage for camps and retreats. Jacqueline and her husband enjoy spending time with their children, friends, and outdoor activities.



Brice Harader-Pate, APRN-CNP, FNP-BC

Brice Harader-Pate, APRN received her Bachelors of Science in Biology from Northeastern State University, Bachelors of Science in Nursing from the University of Oklahoma Health Sciences Center, Masters of Science in Nursing from the University of Oklahoma Health Sciences Center, and she is currently pursuing her Doctorate of Nurse Practitioner with emphasis in Acute Care, at Vanderbilt University. Brice Harader-Pate, APRN is a nurse practitioner certified by the American Association of Nurse Practitioners and licensed by the Oklahoma Board of Nursing to provide healthcare to all ages.

She began her career in 2011 in Tulsa, Oklahoma, working as an emergency department nurse where she became a Board Certified Emergency Nurse. In addition to her clinical experience, Brice serves in several leadership and service roles. In her free time, she is actively involved in leadership roles with the American Association of Emergency Nurse Practitioners and SkillsUSA. Since 2013 she has traveled to South America to serve on medical mission trips with the University of Oklahoma and United Servants Abroad.




Lisa Leifheit, APRN-CNP, FNP-BC

Lisa Leifheit, APRN-CNP received her undergraduate nursing degree from Oklahoma Wesleyan University and her Master’s degree from Saint Louis University. She is board certified by the American Academy of Nurse Practitioners Certification Program. In addition to maintaining her Family Nurse Practitioner certification, she is a Nationally Certified Paramedic, licensed in the state of Oklahoma and is a Certified Emergency Nurse. Lisa and her husband, Ryan, enjoy spending their spare time with their children, grandchildren, boating, and traveling.

Lisa began her nursing career in 1998 as a Neonatal ICU Nurse at Hillcrest Medical Center. She began her emergency medicine career working as an Emergency Department nurse at Saint Francis Hospital and then worked as a Tulsa Life Flight Flight Nurse for nearly 10 years. After becoming a Nurse Practitioner, she followed her passion for emergency medicine to Bristow Medical Center and CORE, offering emergency and hospitalist services. During her tenure at Saint Francis Hospital, she received the C.T. Thompson Award for Excellence in Trauma Care.

Emergency Room Services – There When You Need Us

Emergency_edited-1Bristow Medical Center’s emergency department is a Level 4 trauma center staffed 24/7 by physicians, physicians assistants, nurses and other staff trained for emergency care.

We offer emergency care for people of all ages. All our emergency room staff have specialized training to assess trauma, heart attack, and stroke symptoms, and administer life-saving treatment. When advanced care is needed, the hospital aims to get patients to specialized facilities within 60-90 minutes.

Our medical center provides complete on-site diagnostic services including CT scan, MRI, and X-ray.

If you are experiencing a true medical emergency call 911 immediately for assistance.