Dr. Amanda Bighorse is a board-certified family medicine physician with over 11 years of experience providing patient-centered care. She earned her undergraduate degree from Northeastern State University and her medical degree from the Oklahoma State University College of Osteopathic Medicine. She completed her family medicine residency at OSU-COM in Tahlequah, Oklahoma. Her paternal grandparents and Native heritage were a major influence in her journey to medicine, as was a personal experience as a teenager when her father was diagnosed with leukemia. The care her father received inspired Dr. Bighorse to pursue a career where she could make a meaningful difference in the lives of patients and their families. Dr. Bighorse finds it a privilege to develop long-term relationships with her patients, sharing in both the challenging and joyous moments of their healthcare journey. She loves getting to know her patients as individuals—their hobbies, families, and life experiences. She especially values the stories and wisdom her senior patients share, finding common ground that strengthens trust and guides her approach to care. By listening closely and understanding each patient’s unique background, Dr. Bighorse is able to provide personalized, whole-person care and foster a partnership where patients actively participate in their health. She enjoys educating patients on their health, explaining the reasons behind screenings, labs, and treatments, and engaging in open conversations about their preferences and concerns. She believes that care is most effective when it is collaborative, patient-informed, and flexible. In her free time, Dr. Bighorse enjoys spending time with her son and family, exploring farmer’s markets, trying local food trucks and snow cone stands, traveling, fishing, and discovering nature trails and parks.

Dr. Daniel Stegman is a primary care physician specializing in Family Medicine. He attended Arizona State University and completed medical school at Arizona College of Osteopathic Medicine. He did his residency training at McAlester Regional Health Center in Oklahoma. Dr. Stegman is excited to be joining VIPcare and looks forward to establishing his family of patients and joining them on their healthcare journey. In his free time, he enjoys spending time with his wife, Madison, and their young son.

Dr. David Griffiths is a board-certified Family Medicine specialist with over 38 years of experience in the medical field. He graduated from Stanford University and attended medical school at the University of Oklahoma in Oklahoma City. He completed his residency training at the University of Oklahoma Tulsa Medical College. Dr. Griffiths serves as the Chair of MyHealth’s Clinical Quality Committee for the Tulsa County Medical Society. In addition to family medicine, he has much experience in sports medicine. He thanks you for choosing VIPcare as your medical home and looks forward to joining you on your journey to Better Health. In his free time, Dr. Griffiths enjoys spending time with his wife and daughter.

Dr. Lawrence Lieberman is a board-certified primary care physician specializing in Family Medicine. He earned his medical degree from Wayne State University School of Medicine in Detroit, MI, and completed his residency at St. Mary’s Medical Center in Grand Rapids, MI. Dr. Lieberman has 28 years of experience in the medical field and is affiliated with several hospitals. He was previously a primary care physician at Harvard Family Physicians in Tulsa, OK. Dr. Lieberman thanks you for choosing VIPcare as your medical home and looks forward to joining you on your journey to Better Health.

Dr. Michael Steiner is an experienced general medicine physician with more than 10 years of providing patient-centered care. He earned his bachelor's degree from the University of Utah before completing his medical degree at Lake Erie College of Osteopathic Medicine. Throughout his career, Dr. Steiner has cared for patients in a variety of healthcare settings, including military medicine, urgent care, primary care, and rural family practice in the United States and New Zealand. These diverse experiences have shaped his comprehensive approach to delivering relationship-based care that focuses on the whole person, not just individual health concerns. As a primary care physician, Dr. Steiner is committed to helping patients stay healthy through preventive care, early detection, and effective management of chronic conditions. He believes in partnering with patients to create personalized care plans that support their health goals, preserve independence, and improve quality of life. Born and raised in Tulsa, Dr. Steiner is proud to care for the community he has long called home. In his free time, he enjoys spending time outdoors boating, fishing, hiking, road cycling, mountain biking, and exploring Oklahoma's parks and lakes. He also enjoys attending live music events, sporting events, and spending time with family and friends.

Dr. Nathan Wood is a board-certified physician specializing in Family Medicine. He completed his undergraduate degree at Oklahoma Baptist University and earned his medical degree from the University of Oklahoma College of Medicine. He was inspired to become a physician at an early age by his family’s doctor, whose compassion and dedication left a lasting impression. By the time he was four years old, he knew he wanted to follow in those footsteps and dedicate his life to caring for others. As a family physician, Dr. Wood finds his greatest joy in building meaningful, long-term relationships with his patients. He values the opportunity to hear their stories, provide guidance, and work alongside them to achieve better health. His approach to care is collaborative and patient-centered, emphasizing open communication, mutual respect, and shared decision-making. He is especially committed to supporting senior patients with attentive listening, clear explanations, and compassionate encouragement, always making sure they feel valued and empowered. Originally from Pawhuska, OK, Dr. Wood is grateful to live and work in eastern Oklahoma, where he enjoys the strong sense of community and the natural beauty of the rolling hills and wooded landscapes. In his free time, he enjoys reading and studying the Bible, preparing sermons, and exploring how world events relate to biblical teachings. While serving as a medical officer in the Air Force, he became a private pilot, and he enjoys attending airshows. Dr. Wood loves to spend quality time with his wife of 31 years and their two daughters and son, along with their spouses and his parents-in-law. Soon to be a grandfather, he treasures family life and their lively household of animals, which includes a cat, five dogs, a pet steer, a mini-donkey, three goats, chickens, guineas, and a duck.

Carla Newton is a board-certified Adult Nurse Practitioner with over 22 years of experience in the healthcare field. She graduated from Vanderbilt University. Carla knew from a young age that nursing was her calling. She got her start in healthcare as an ER tech while still in high school, laying the foundation for what would become a lifelong passion. Over the years, her dedication to patient care and clinical expertise has only continued to grow stronger. Today, she proudly serves on the executive board of the Association of Oklahoma Nurse Practitioners, helping to guide and advocate for the future of her profession. In her free time, she enjoys gardening and competitive cooking.

Laverne Barnes, APRN-FNP, is a dedicated and compassionate Family Nurse Practitioner with 26 years of experience. She completed her medical education at Tulsa Community College and Community General in Syracuse, N.Y., and is board-certified by the American Academy of Nurse Practitioners. Laverne’s passion for medicine stems from her deep concern for humanity and her desire to provide care that goes beyond physical healing. Her goal is to leave every patient in a better state—whether physically or emotionally—after each interaction. She finds immense fulfillment in hearing her patients say, “I am doing so much better.” In her free time, she enjoys decorating Christmas trees, cooking, watching hummingbirds, and listening to music.

Misty Stephens, APRN-CNP, is a board-certified Family Nurse Practitioner specializing in family medicine. She earned her undergraduate degree from Missouri Southern State University and her graduate degree from Maryville University. A natural caregiver at heart, Misty was drawn to medicine by her passion for helping others and educating them about healing and wellness. She finds the greatest reward in hearing her patients share that they feel better, have improved symptoms, and are enjoying a higher quality of life.

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Misty believes education is one of the most important tools in patient care—especially for seniors. She takes time to explain each step of the care plan, ensuring her patients feel informed, supported, and confident in their healthcare journey. In her free time, she enjoys spending time with family, traveling, gardening, and playing tennis.

Rhonda Line is a board-certified physician assistant with over 29 years of experience delivering comprehensive, patient-centered care. She earned a Bachelor of Science degree from East Central University in Ada, Oklahoma, and completed her training through the Physician Associate Program at the University of Oklahoma. Rhonda was inspired to pursue a career in healthcare to make a lasting difference in people’s lives. She believes in a team-based approach to medicine rooted in ethical principles and compassion. By taking the time to listen and truly understand her patients’ needs, she builds strong, trusting relationships. Rhonda encourages open conversations about preventive care, provides education on risk factors, and partners with patients to help them reach their individual health goals. In her free time, she enjoys spending time with her family and any and all outdoor activities, especially those involving their dogs, horses, and rodeo.