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Our Team
Dr. William S. Muir, MD

is Board-Certified with the American Board of Orthopedic Surgeons & fellowship trained Pain Management Expert for 30 years. He graduated from Brigham Young University with honors after he completed a graduate program at Stanford University in physical therapy.  He practiced physical therapy in Las Vegas for several years prior to attending medical school at the University of Nevada School of Medicine. 

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Kristie Coarasa, PA-C

is a Board-Certified Physician Associate who was born and raised in Southern California. Kristie graduated from California State University Long Beach with a Bachelor of Science in Kinesiology and then completed her Masters degree in Physician Assistant Studies at the University of Southern California.

Javier Avila, MS, PA-C
is a Board Certified Physician Assistant. He graduated from Pepperdine University with a Bachelor of Science in Sports Medicine. He received his postgraduate physician assistant training at the Western University of Health Sciences. Javier has over 18 years of combined experience in Orthopedics, Spine, and Pain Management.
Our Practice


We make every attempt to identify "the source of the problem." this allows us to be more effective in treatment and to accurately tell the patients what their options are including the pros and cons of each option.

Our office truly cares for each patient and only offers care that we would offer family members or friends with similar problems. we exhaust all conservative treatment before offering surgical options. We put the patient first and paramount. 

William Muir, MD, spine surgery coordinates treatment plans that are individually designed for each of our patients.


Spine News:

Could Your Foot Pain Be Caused by a Problem in Your Spine?

Nerve pain in your foot is often provoked by problems within the foot itself, but in some cases it may be caused by a problem in your lumbar spine. Read on to learn about the common causes of foot pain and helpful pointers to help you understand the origin of your foot pain.

Why Surgery for Sciatica Is Not One-Size-Fits-All

Unless treating a medical emergency, surgical treatment for sciatica is typically elective. Surgery may be advocated in the treatment of sciatica when nonsurgical treatments have failed to provide relief or the neurological symptoms continue to progress.

Figuring Out the Right Treatment for Your Sciatica Symptoms

The response to a specific treatment may vary considerably between different individuals with the same diagnosis for sciatica. Learn about the common factors that influence sciatica treatment and the importance of obtaining an accurate diagnosis.

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