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Meet Our Surgeon

David R. Lionberger, MD

David R. Lionberger, MD
Board Certified
Orthopedic Surgeon

  • Total Knee Replacement
  • Total Hip Replacement
  • Shoulder Surgery
  • Arthroscopy of the Knee & Shoulder
  • Computer-Assisted Surgery of the Knee
  • Robotic-Assisted Surgery of the Knee
  • Minimally Invasive Surgery
  • Partial Knee Replacement
  • Shoulder Adult Reconstructive Surgery
    Hospital Affiliation:
  • The Methodist Hospital

Meet Our Staff

Katherine Schriner

Katherine Schriner, MPAS, PA-C
Physician Assistant

Katherine Schriner is a Physician Assistant with Houston Methodist Orthopedics with an emphasis on total joint replacement care. Katherine is a part of the patient’s experience from start to finish of their surgical journey and ensures each patient receive the most current and individualized care. She also provides services such as injections in hips, knees, and shoulders, as well as incision care and follow ups.

Katherine is a board certified through the National Commission on Certification of Physician Assistants (NCCPA). She received an M.S. in Physician Assistant Studies from Des Moines University and a B.S in Microbiology from the University of Wyoming. She sees patients in the Texas Medical Center.

Cynthia Medrano

Cynthia Medrano
Medical Assistant (MA)

Cynthia Medrano is our bilingual senior medical assistant born and raised in Houston, Texas. She started working with Orthopedics in 2005 and has been with Dr. Lionberger since 2013. She developed a strong sense of devotion for the medical field and later received her Certification in Medical Assisting from National Health Career Association.