About Us

Welcome to SASpine.

SASpine (Surgical Associates in Spine) is one of the nation’s most elite spine practice management companies. We now have offices in Houston as well as the San Antonio medical center. Our CMO, Steven J. Cyr, M.D., is a spine surgeon who has gained a reputation for surgical excellence in Texas, throughout the nation, and abroad.

All of our providers are experienced at isolating the source of pain and accurately diagnosing and treating symptoms and conditions using both non-operative and operative means. We strive to treat the whole patient from the onset of pain to post-surgical rehabilitation.

Our Mission

Our philosophy is to seek conservative, non-surgical solutions for a patient’s neurological, muscular, or skeletal problems first. If non-surgical treatment fails to provide significant pain relief and surgery is required, our patients benefit from surgical procedures provided by world-class surgeons, including Dr. Steven J. Cyr, who trained at the prestigious Mayo Clinic in Rochester, Minnesota.

The Mayo clinic spine fellowship is a combined fellowship providing both neurosurgical and orthopaedic expertise to its fellows, making them experts in treating cervical, thoracic, and lumbar spine conditions. Both the Neurosurgery and Orthopaedic departments have consistently been ranked number 1 in the country for more than 20 years. This unique approach provides patients with a level of care provided by few surgeons in the world.

As a previous collegiate athlete, bodybuilder, and Orthopaedic surgeon, Dr. Cyr’s unique background enables him to understand the source of muscular and skeletal issues unlike many others. Coupled with fellowship training in Orthopaedic and Neurosurgery of the spine, his ability to diagnose the source of pain and identify solutions to address it are rare.

What Sets Us Apart

Dr. Cyr and his mid-level providers, who are hand-picked and specially trained by him, define success by the number of people who are able to live a better quality of life after treatment. In attention to his methodical and meticulous approach to surgical excellence, Dr Cyr is a man of character and compassion who believes in treating patients like family.

This reputation is apparent in the heart-felt testimonies regularly provided by patients who have received his care. In addition, he has become world renowned as a premier provider of spine surgery with success rates rarely seen elsewhere. He has been named a Texas Super Doctor, Castle-Connelly Top Spine Surgeon multiple years in a row, and America’s Top 10 Orthopaedic surgeons, amongst many other recognitions and awards. We are excited to show you the SASpine difference.

Our Doctors

Steven J. Cyr, M.D., F.A.A.O.S.

Chief Medical Officer SASpine, LLC

Anjali Jain, M.D.

Pain Management Physician

John Sladky, M.D.


Mid Level Providers

Paul B. Chen, MPAS, PA-C

Board Certified Physician Assistant

Mary Vuong, PA-C

Board Certified Physician Assistant

Sharon Quigley, FNP

Marcus W. Trejo, PT

Licensed Physical Therapist


LeAnn Cyr

CEO & Founder

Elizabeth Marshall-Trevino

Practice Administrator