Meet Our Clinic Directors

We are so proud to call these women and men our doctors of chiropractic, our colleagues and our friends. They’re dedicated to the proper diagnosis and treatment of accident victims from every corner of the Metroplex and every walk of life. In order to more effectively treat persons injured in motor vehicle crashes, our doctors of chiropractic have become or are on the path to becoming certified in Whiplash and Brain Injury Traumatology through the Spine Research Institute of San Diego (SRISD), a research center devoted to the investigation of motor vehicle crash injury. For the past 28 years, SRISD has focused research and education on the more common injuries sustained in everyday motor vehicle crashes, such as whiplash and mild traumatic brain injuries.

We welcome you to get to know our staff and hope you’ll contact us immediately if you notice any symptoms of injuries from a motor vehicle or other type of accident.

Dr Saucedo smile lab coat no bgLou Saucedo, Jr., D.C.

Clinic Director: Oak Cliff

“My mission is simple: to use the knowledge and experience I have gained in more than 20 years of examining, diagnosing and treating patients injured in motor vehicle collisions. By using innovative therapeutic modalities and unparalleled diagnostic equipment, I will provide exceptional service and a patient experience second to none. I will respect your time, educate you on your injuries, and provide you with a personalized treatment plan. I will help you make informed decisions regarding your health during and even after you complete your treatment with Accident and Injury Chiropractic. We are all about giving you compassion, exceptional service, a comfortable atmosphere, providing the very high quality care you deserve..”
Lou Saucedo, Jr., D.C.

Dr. Lou Saucedo, Jr., graduated from Texas A & M University with a Bachelor of Science degree in biomedical science and from Parker University College of Chiropractic in Dallas, TX, with a Doctor of Chiropractic degree. He received additional education and training from the Spine Research Institute of San Diego in whiplash injury traumatology and biomechanics and brain injury traumatology in which he received both advanced and master’s certification. In addition, Dr. Saucedo received certification from the Spine Research Institute of San Diego Center for Research into Automotive Safety and Health in Low Speed Rear Impact Automobile Crash Reconstruction in which he participated in 12 actual crash test studies. This makes him highly qualified to treat accident victims.

Dr. Saucedo also took the American Academy of Disability Evaluating Physicians AMA Guides 4th Edition Training Course, received Designated Doctor/Impairment Rating certification, and completed the Peer Utilization Review and Insurance Consultant Certification Program.

Dr. Saucedo strives to give his patients “high quality health care and personal attention in a comfortable and caring environment.” He doesn’t just help to alleviate his patients’ pain but also to teach and motivate them “to become active participants in their own treatment and process of healing.” He treats the entire person–not just symptoms but the underlying cause of those symptoms.

Dr RayshellMark Rayshell, M.S., D.C.

Clinic Director: Pleasant Grove

“My goal continues to be the treatment of my patients such that they are able to return to their normal lives.”
Mark Rayshell, M.S., D.C.

Dr. Mark Rayshell has a Bachelor of Science degree in biology and chemistry from Abilene Christian University in Abilene, TX, and a Master of Science degree in molecular biology from the University of Texas at Dallas. He graduated with a Doctor of Chiropractic degree from Parker University College of Chiropractic in Dallas, TX, where he was awarded a Certificate of Scholastic Excellence. In addition, Dr. Rayshell was selected into Who’s Who Among Students in American Universities and Colleges for his scholastic excellence and college and community participation and leadership.

Dr. Rayshell has treated thousands of motor-vehicle-accident and work-related injuries and has extensive knowledge of whiplash injury and treatment through courses like the Spine Research Institute of San Diego Master’s Certification Program in Whiplash Injury. Dr. Rayshell uses “up-to-date scientific standards of care” in the treatment of his patients and believes in “direct one-on-one care” for each of them. Not only does he provide excellent treatment for his patients’ injuries, he also believes in educating them on their injuries and treatment plans so they can partner with him in their healing process and in living a healthy lifestyle. With his focus on the importance of education, Dr. Rayshell has been teaching college level science for over 25 years.

Dr Y Spring CreekYevgeniya Yanayva, D.C

Clinic Director: Spring Valley/Coit

“My mission is to provide my patients with uncompromising care in a comfortable and caring environment, to restore their bodies to proper function, and to inspire and educate my patients to help them achieve a higher quality of life through better health.”
Yevgeniya Yanayva, D.C.

Dr. Yevgeniya Yanayva received a Bachelor of Science in Biochemistry degree from the University of Texas at Dallas where she was in the Collegium V Honors Program from 2002-2006. She went on to receive a Bachelor of Science in Anatomy degree, a Bachelor of Science in Health and Wellness degree, and a Doctor of Chiropractic degree from Parker University.

Dr. Yanayva has postdoctoral certification in chiropractic neurology along with specialized training in ATM (active therapeutic movement therapy) DTS (spinal decompression therapy) and cold laser therapy. She also received specialized training in whiplash injury biomechanics and traumatology from the Spine Research Institute of San Diego.

Dr. Yanayva continually updates her knowledge and skills through participation in a wide range of seminars offered to the chiropractic community. As an active participant in that community, Dr. Yanayva was a member of the Texas Chiropractic Association from 2013-2014.

Dr Hootan 2Hootan Firouzmandi, D.C., B.S.

Clinic Director: Bachman Lake & NW Hwy

“As your treating doctor, I will use the highest ethics, integrity, and professional standards in your tratment. I will continually work to improve our services at every level. ”
Hootan Firouzmandi, D.C., B.S.

Dr. Firouzmandi began his studies at Collin County Community College in Plano, TX, where he received his Associate Degree in science and his Emergency Medical Technician (EMT) certification. He went on to earn a Bachelor of Arts in biology at the University of Texas at Dallas before continuing his education at Parker University College of Chiropractic in Dallas, TX. There he received his Doctor of Chiropractic along with a Bachelor of Science degree in anatomy and certification in acupuncture. Dr. Firouzmandi also has specialized training in whiplash injury; functional medicine including blood chemistry, neuroendocrine, neurotransmitter, and thyroid disorders; x-ray service; and has worked as a molecular biology lab technician.

Based on the recommendation of a select committee of faculty, staff, and administrators at the Parker outpatient clinic, Dr. Firouzmandi was chosen to receive the Dr. Robert J. Czopoth Service and Leadership Award in recognition of his dedication and service there. Dr. Firouzmandi was also privileged to be a member of the chiropractic and medical team for the Youth Olympic Qualification Games in El Salvador.

Dr. Firouzmandi serves not only to help alleviate his patients’ pain but to educate and inspire them to partner with him in their treatment plan and healing process. He doesn’t just treat their symptoms but looks for the underlying cause. With “a thorough history and examination, a detailed diagnosis, and a personalized treatment plan,” Dr. Firouzmandi quickly has his patients on the road to recovery.

Dr DuncanVaniecea Duncan, D.C.

Clinic Director: Mesquite

“My goal as a doctor is to listen to your concerns, address them with appropriate care, and work with you to help you achieve your goal of recovery.”
Vaniecea Duncan, D.C.

Dr. Vaniecea Duncan graduated Magna Cum Lade from Langston University in Langston, Oklahoma, with a Bachelor of Science degree in biology. She went on to receive her Doctor of Chiropractic degree from Parker University College of Chiropractic in Dallas, TX, and additional education and training at the Veteran Affairs Hospital Physical Medicine Rehabilitation Clinic. In addition to her chiropractic certification, Dr. Duncan has physiotherapy certification through the National Board of Chiropractic Examiners.

Dr. Duncan stresses that when you’ve been in an accident it’s critical that you be taken care of by a health care professional whose focus is personal injury. Dr. Vaniecea Duncan is that kind of doctor. She makes sure each of her patients receives “a thorough physical examination, a detailed diagnosis,” and “a personalized treatment plan” based on “core chiropractic principles.”

Dr AssociateShane Marcum, D.C.

Clinic Director: Irving

“My goal daily is to serve and teach my patients in order to help them recover to their most full potential.”
Shane Marcum, D.C.

Dr. Shane Marcum studied at New Mexico Junior College where he was named Biology Student of the Year, Texas Tech University, and Parker University College of Chiropractic in Dallas, TX. Throughout the years, Dr. Marcum has continued to grow and develop his understanding of health and healing through seminars on holistic health; nutrition–including supplements and gluten and celiac diagnosis; extremity adjusting; myofascial release therapy; trigger point therapy; neurology; disability and impairment rating; sports injuries and injury prevention; rehabilitation; MRI interpretation and utilization; the treatment of migraines, neck, shoulder, and back pain; and whiplash injury and treatment.

He has pursued additional training from the Spine Research Institute of San Diego in whiplash injury traumatology and biomechanics and brain injury traumatology in which he received both advanced and master’s certification. Dr. Markham received certification from the Spine Research Institute of San Diego Center for Research into Automotive Safety and Health in Low Speed Rear Impact Automobile Crash Reconstruction in which he participated in 12 actual crash test studies. He, too, is highly qualified to treat accident victims.

Dr. Marcum does not just treat his patients’ symptoms. Rather, he looks for the root cause of each of his patients’ health issues and formulates individual plans to fully resolve those issues.

mooringpicCori Mooring, D.C.

Clinic Director: Arlington

“[My mission is to] help facilitate my patient’s journey to health and wellness. We both accomplish this as a team working together–staying focused and committed to your treatment plan.”
Cori Mooring, D.C.

Dr. Cori Mooring received an Associate of Art degree and a Bachelor of Science degree from Florida A & M University. She also earned a Bachelor of Science degree and a Doctor of Chiropractic degree from Parker University College of Chiropractic in Dallas, TX, where she was on the honor roll and Dean’s List. In addition, she has Manipulation Under Anesthesia (MUA) certification from the University of Bridgeport in Bridgeport, CT. During her studies, Dr. Mooring was a member of the Pi Lambda Chi Chiropractic Sorority and selected into Who’s Who Among Students in American Universities and Colleges for her scholastic excellence and college and community participation and leadership.

Over the years, Dr. Mooring has continued her training and education in health and healing through seminars on whiplash injury and treatment, low-level laser therapy, personal injury, myofascial release, and Bio-energetic Synchronization Technique (B.E.S.T.).

Dr. Mooring was honored to be a team chiropractor for the USA Olympic Track and Field Trials and the USA Team World Junior Track and Field Championships.

Dr. Wirth, Care Specialist - Accident & Injury ChiropracticRodney P Wirth, D.C.

Clinic Director: Fort Worth

“My mission is to serve those injured from trauma with love and healing to the point of wholeness as quickly as possible.”
Rodney P. Wirth, D.C.

Dr. Rodney P. Wirth received Associate of Applied Arts and Sciences and Pre-Chiropractic degrees from Blackhawk College in Moline, Illinois. He went on to receive his Doctor of Chiropractic degree from Parker College of Chiropractic in Dallas, Texas. Dr. Wirth was a member of the Christian Chiropractors Association and the Chiropractic Leadership Alliance. In addition, he served for 6 years in the U.S. Army National Guard, Reserve. Recognizing the importance of continuing education to give his patients the very best of care, Dr. Wirth has received specialized training in whiplash injury biomechanics and traumatology from the Spine Research Institute of San Diego.

Dr Ngyuen DCLong Nguyen, B.S., D.C.

Clinic Director: Central Dallas

“As your doctor, I will perform my duties to ensure my patients reach their goal of recovery. ”
Long Nguyen, B.S., D.C

Dr. Nguyen graduated from Parker University right here in Dallas with his DC and a Bachelor of Science in Health and Wellness. He also has degrees fom the Universidad Estatal del Valle de Ecatepec, Mexican and Montgomery College in Rockville, MD.

He has additional training in Whiplash Injury: Bio-mechanics & Traumatology, Acupuncture certification, NBCE Physiotherapy certification, Graston Technique, Neurology from the Carrick Institute.

Excited to be part of the Accident & Injury team, Dr Nguyen has pledged to provide his patients with high quality health care through current and effective techniques. His goal is to educate and treat the underlying cause of a patient’s injuries and not just their symptoms through examination, diagnosis and a personalized treatment plan.  When you are involved in a motor vehicle collision, it can have a prolonged effect on your daily activities. In Dr. Nguyen’s hands you will get the pro treatment you deserve.

Votka Sbong, D.C., M.S., B.S.

Clinic Director: Wheatland Dallas

“My goals are to provide the best service to all of my patients with compassion, respect, and integrity and to encourage, inform, and inspire all of my patients to take actions to improve themselves in areas of their health and well-being.”  Votka Sbong, DC

Dr. Votka Sbong attended the University of Central Oklahoma in Edmond, Oklahoma, where he received a Bachelor of Science in General Studies degree in 1997, a Bachelor of Science in Nutrition and Food Management degree in 2002, and a Master of Science in Nutrition and Food Management degree in 2004. His desire to help others in their quest for health lead him to a Bachelor of Science in Health and Wellness degree and a Doctor of Chiropractic degree from Parker University of Dallas, Texas, in 2014.

While at Parker University, Dr. Sbong completed studies in Activator I and II, the Graston Technique, and the Cox Flexion Distraction Technique. He also studied myofascial release techniques and osteopathic manipulative techniques, and he completed 300 hours of study in traditional Chinese acupuncture. He is certified in Activator I and Vibrational Medicine.

To further his education, Dr. Sbong attended the Spine Research Institute of San Diego where he completed module I-IV of their Whiplash and Mild Traumatic Brain Injury program. His understanding of the workings of the human body is quite diverse. In addition to all of his education and training, he is a martial arts expert, and in 2006 he was inducted into the US Martial Arts Hall of Fame.