Workers Compensation Experts
We specialize in treating and supporting those injured on the job. Our staff assists with authorizations, managing appointments, and communicating all new developments with referring professionals. At Workers Compensation Experts, we understand the complexities involved in the recovery process, and we specialize in offering top-notch medical treatment and support services. Our experienced staff excels in obtaining authorizations, efficiently managing appointments, and ensuring seamless communication of all new developments with referring professionals
New Patient Packet
Dr. Shahin Sadik is one of the founding physicians of Universal Pain Management. Dr. Sadik graduated with a medical degree at Eastern Virginia Medical School of Medical College of Hampton Roads. After that, he completed his residency in anesthesiology and fellowship training in pain management at the University of Pennsylvania. Currently, Dr. Sadik works as a pain management physician and Medical Director at Universal Pain Management in California. Board-certified by the American Board of Anesthesiology with special qualification in pain management and also by the American Board of Pain Medicine, Dr. Sadik has vast experience managing chronic pain. In addition to his duties at Universal Pain Management, Dr. Sadik holds a faculty position at the University of Southern California, Keck School of Medicine as a Clinical Associate Professor of Anesthesiology. 
An accomplished author, instructor, and physician, Dr. Ray d'Amours earned his medical degree in 1985 with Distinction in Research from the University of Miami School Of Medicine. He then served the Naval Aerospace Medical Institute as a student flight surgeon and the U.S. Navy Test Pilot School as flight surgeon. After his naval service, Dr. d'Amours completed his residency in anesthesiology at the University of Pennsylvania. Practicing in pain management since the early '90s, Dr. d'Amours moved to southern California in 2002, when he joined Universal Pain Management. Concurrently with his duties as partner at Universal Pain Management, he works as an assistant clinical professor of anesthesiology at the Keck School of Medicine for the University of Southern California. Dr. d'Amours is certified by the American Board of Anesthesiology with special qualifications in pain management, by the American Board of Interventional Pain Physicians, and by the World Institute of Pain as a fellow in interventional pain practice. Dr. d'Amours has authored several scientific papers and book chapters on pain management, as well as delivered various lectures on the subject across the U.S. 
Dr. Francis Riegler is also one of the founding physicians of Universal Pain Management. Dr. Riegler earned his medical degree from Case Western Reserve University in Cleveland, Ohio. He then completed his residency training in anesthesia at Michael Reese Hospital and Medical Center in Chicago, where he was also Chief Resident in his final year. He also has an MBA degree from the University of California at Irvine. Dr. Riegler currently resides in California, treating patients as a pain management physician with Universal Pain Management and holding a faculty position at the University of Southern California Keck School of Medicine as an assistant professor of anesthesiology. Dr. Riegler is an expert in the daily management of chronic pain. He is board-certified by the American Board of Pain Medicine, by the American Board of Interventional Pain Physicians, and by the American Board of Anesthesiology with a special qualification in pain management. He is also a lifetime member of the American Society of Interventional Pain Physicians and executive director of the California Society of Interventional Pain Physicians. 
Dr. Daniel Alves, MD, MPH specializes in the treatment of people with both acute and chronic pain syndromes, including neck and low back pain, joint pain, and complex regional pain syndrome. He completed his medical degree at Loma Linda University in 1996. This was then followed by a residency in Preventive Medicine. During this time, he completed a Masters in Public Health. He later worked as a faculty member at Loma Linda University until he decided to pursue his passion of musculoskeletal and pain medicine. He moved to Milwaukee where he trained at the Medical College of Wisconsin where he was Chief Resident in his final year. From there he returned to Southern California to undergo further specialization at the prestigious UCLA-PM&R Pain Fellowship. In addition to providing all forms of interventional techniques such as peripheral and spinal cord stimulators, intrathecal pump implantation and management, he is also trained in performing diagnostic electromyography and nerve conduction studies (EMG and NCS) which helps establish peripheral nerve pathology. In his spare time, he enjoys running, yoga, cycling and soccer. 
Dr. Kevin Kohan, D.O., Q.M.E. is Board Certified in both Pain Medicine and Physical Medicine and Rehabilitation. He completed both his undergraduate training at UCLA, and medical training at Midwestern University with honors. Subsequently, he performed his residency in Physical Medicine and Rehabilitation at Einstein Medical College. During his residency training, Dr. Kohan pursued several pain and spine research projects, an undertaking that resulted in several presentations and awards at national and international medical conferences and has published in pain and physical medicine and rehabilitation journals. Dr. Kohan performed his pain medicine fellowship at University Cincinnati where he performed extra training in research and regional anesthesia. He is an active member of American Society of Interventional Pain Physicians, American Academy of Pain Medicine, American Academy of Physical Medicine and Rehabilitation, and the International Society of Interventional Spine. His interests are in spine, joint pains, headaches, and Complex Regional Pain Syndrome. During his spare time he enjoys spending time with his family engaging in several outdoor activities such as hiking, biking, and traveling. 
Dr. Arvinder Gill D.O. is board-certified with America board of Anesthesiology in Anesthesiology and Sub specialty of Pain Medicine. He completed undergraduate training at the University of Wisconsin Parkside graduate and obtained his medical degree at Midwestern University. His residency training in Anesthesiology was at University at Buffalo, and he completed his training with a fellowship in Pain medicine at University at Buffalo. He also served as a Chief Resident during his final year in the residency program. His special interests include cancer pain, complex regional pain syndrome and implantable devices for treatment of chronic pain. Dr. Gill is a member of American Society of Anesthesiologists. He family includes his wife and twin daughters. He enjoys travelling, music and outdoor activities. 
Dr. Choudhary M.D. specializes in chronic pain management and anesthesiology. He completed his undergraduate studies at the University of Southern California and obtained his medical degree from Virginia Commonwealth University. Thereafter, he completed his Anesthesiology residency at the University of Illinois at Chicago and was elected Chief Resident in his final year. He stayed on for one additional year as an Interventional Pain Fellow where he developed skills to treat a variety of pain syndromes. Dr. Choudhary also was involved in a successful multi-disciplinary research project in which effective opioid sparing treatment methods were formulated to treat pain for post-surgical patients. In his spare time, he enjoys being involved in motorsports, cooking, and traveling. 
Omid Mahgerefteh, D.C. is a dedicated chiropractor with a passion for improving the quality of life for his patients. Dr. Mahgerefteh combines his expertise in chiropractic care with a holistic approach to address various forms of pain. With more than 20 years of experience in the field, Dr. Mahgerefteh has developed a deep understanding of the intricate connections between musculoskeletal health and overall wellness. He is committed to providing personalized treatment plans tailored to each patient's unique needs, utilizing a combination of manual/manipulative therapies, therapeutic modalities, and rehabilitative exercises. Dr. Mahgerefteh also has extensive experience in treating pre- and post-surgical patients, offering specialized care to help them manage pain and regain function following surgical procedures. He strives to empower his patients with the knowledge and tools they need to manage their pain effectively and improve their overall well-being. He has worked closely with orthopedic surgeons and other healthcare professionals to develop comprehensive treatment plans tailored to each patient's specific needs. Furthermore, Dr. Mahgerefteh is actively involved in education. He periodically lectures at the USC Department of Anesthesiology and Pain Management, sharing his expertise and insights with medical students, residents, and fellow practitioners. By staying abreast of the latest advancements in chiropractic care and pain management techniques, Dr. Mahgerefteh ensures that his patients receive the highest standard of care possible.