OUR TEAM
The team at The Spine Center is dedicated to supporting patients through every stage of their spine care journey. Our staff brings together a wide range of skills and experience, working closely with Dr. Saqib Siddiqui to provide care that is both advanced and compassionate. From the first phone call to follow-up visits, we focus on listening carefully, answering questions, and ensuring each patient feels supported. By combining professional expertise with a welcoming approach, our team strives to create an environment where every individual feels confident in the care they receive.
Mark “Tag” Filley, M.D.
A graduate of Texas A&M University, Dr. Filley received his Doctor of Medicine degree from the University of Texas Health Science Center in Houston and completed his residency training at Vanderbilt University in Nashville, Tennessee. He trained at the prestigious Barrow Neurological Institute in Phoenix and the Texas Brain and Spine Institute in Plano. His training also includes medical research at NASA’s, Johnson Space Center in Houston, Texas and in traditional Chinese medicine at the Capital University of Medical Sciences in Beijing, China.
Dr. Filley, a board-certified physician, is a member of the North American Spine Society, Spine Intervention Society and the American Society of Interventional Pain Physicians.
When not providing compassionate care to his patients, Dr. Filley enjoys spending time with his family. He is active in his church and enjoys camping, scouting and sports with his wife and four children.
Salim Durrani, M.D.
Dr. Durrani earned a bachelor’s degree from the prestigious University of California, Berkeley, where a passion for medicine and patient care began to flourish. This foundation led to advanced medical training, culminating in a pain management fellowship at Mount Sinai, one of the nation’s leading institutions for medical excellence. During this time, Dr. Durrani honed his expertise in cutting-edge interventional procedures and multidisciplinary approaches to pain management.
At the core of Dr. Durrani’s practice is a patient-centered philosophy, emphasizing personalized treatment plans that combine innovative therapies, compassionate care, and a focus on restoring function and well-being. Whether addressing back pain, joint issues, or complex chronic conditions, Dr. Durrani is committed to helping patients regain control of their lives.
Dr. A. Dushi Parameswaran, MD, FAAOS
Orthopedic Surgeon | Sports Medicine Specialist
Dr. Dushi Parameswaran brings Board-Certified orthopedic expertise and fellowship-trained sports medicine specialization to The Spine Center, extending the practice’s comprehensive musculoskeletal care to patients with extremity conditions of the shoulder, elbow, hip, knee, foot and ankle.
With over 15 years of practice in Houston, Texas, Dr. Parameswaran has built a reputation for delivering precise, high-quality surgical care to patients across a wide range of orthopedic needs — from acute sports and work injuries to complex trauma. His surgical focus on the upper and lower extremities complements The Spine Center’s spinal expertise, ensuring that patients with overlapping or co-existing musculoskeletal conditions receive seamlessly coordinated care under one trusted practice.
Dr. Parameswaran completed his orthopedic surgery residency at Rush University Medical Center in Chicago, Illinois, one of the nation’s leading academic medical centers, and his Orthopedic Sports Medicine fellowship at the Cincinnati Orthopaedic and Sports Medicine Center, where he developed advanced proficiency in arthroscopic and reconstructive procedures of the shoulder and knee. He is dual Board-Certified in Orthopedic Surgery and Orthopedic Sports Medicine by the American Board of Orthopaedic Surgery.
Dr. Parameswaran is a member of the American Academy of Orthopaedic Surgeons, the American Orthopaedic Society for Sports Medicine, the Arthroscopy Association of North America, and the Texas Medical Association.
His approach to patient care mirrors the philosophy of The Spine Center: no two injuries are the same, and no single treatment is right for everyone. Through thorough evaluation, honest communication, and individualized treatment planning, Dr. Parameswaran ensures every patient understands their condition and feels confident in their path forward — whether that means conservative management, surgical intervention, or a combination of both.
JUDITH BRIGGS, MSN, NP-C
Judith Briggs is a caring and dedicated provider with over twenty years of nursing experience and over a decade of practice as a board-certified Family Nurse Practitioner. She was born and raised in South Texas and is a graduate of The University of Texas Health Science Center at San Antonio. She is both passionate and compassionate about the care and treatment of each of her patients. Her philosophy is “what matters to the patient, matters to me” and she believes that patients and providers should be partners in healthcare. Her goal is that each patient feels valued, respected, and empowered.