Nathan E. Williams, II, M.D.

Since 1990, North Texas Orthopedics & Spine Center has proudly served the community with exceptional orthopedic care, specializing in physical therapy in Grapevine, TX. Our highly trained physical therapists and compassionate staff are committed to delivering personalized care to every patient. From our advanced facilities in Grapevine, we provide specialized treatment for conditions affecting the ankle, back, elbow, foot, hand, hip, knee, neck, shoulder, spine, and wrist. We also offer expertise in joint replacement and sports medicine, ensuring a comprehensive approach to restoring mobility and improving your quality of life. Whether you're seeking physical therapy, pain management, or surgical solutions, we are here to help!

Dr. Kristen Fleager is a fellowship-trained orthopedic surgeon who specializes in the upper extremity, including the hand, wrist, forearm, elbow, and upper arm. She received her undergraduate degree from Stanford University, where she was a Division I athlete. Dr. Fleager earned her Doctor of Medicine degree from The University of Texas Southwestern Medical School in Dallas, serving as class president for four years. She returned to Stanford to complete an orthopedic surgery residency. From there, she was selected for the prestigious Harvard Hand and Upper Extremity Fellowship, where she trained under world-renowned surgeons at Brigham and Women’s Hospital, Massachusetts General Hospital, and Boston Children’s Hospital.

Dr. Ryan Mulligan is a board-certified and fellowship-trained orthopedic surgeon. He received his Doctor of Medicine degree with honors from Texas A&M University Health Science Center. He completed his residency training in orthopedic surgery at The University of Tennessee Health Science Center and the Campbell Clinic. While in residency, he gained extensive training in orthopedic trauma and fracture care at the Elvis Presley Memorial Trauma Center. He also developed a special interest in sports medicine, joint reconstruction, and knee conditions. He then completed an orthopedic foot and ankle surgery fellowship at Duke University School of Medicine. He currently serves as a team physician for Colleyville Heritage High School.