Medical Advisors

Meet The Team

Bert Mandelbaum, MD

Bert Mandelbaum, MD

Bert Mandelbaum, MD, is an orthopedic surgeon, a member of the Board of Directors and co-chair of medical affairs at the renowned Cedars-Sinai Kerlan-Jobe Institute in Los Angeles, as well as the published author of “The Win Within: Capturing Your Victorious Spirit.” He has over three decades of experience covering a range of orthopaedic, adult, and pediatric sports medicine, and overall wellness topics.

Dr. Mandelbaum currently serves as the Associate Chief Medical Officer for Major League Soccer, Medical Director for the FIFA Medical Center of Excellence in Santa Monica, Co-Director of The USOC CSS National Medical Center of Excellence and resides on the USOC National Medical Network Advisory Group. He has served as director of research for Major League Baseball and team physician for numerous collegiate and Major League Soccer teams, as well as for the U.S. Soccer Men’s National Team. He currently serves as medical director of the FIFA Medical Center of Excellence in Santa Monica, and on the U.S. Olympic Committee National Medical Network Advisory Group.

Dr. Mandelbaum also served as Chief Medical Officer for the 2015 World Special Olympic Games in Los Angeles; Chief Medical Director for the 2016 Copa America Centenario and CONCACAF; FIFA IOC Medical Officer for the 2016 Summer Olympic Games in Rio de Janeiro, Brazil; and Chief Medical Officer for the 2017 CONCACAF Gold Cup. He is a member of multiple professional medical societies including the American Academy of Orthopaedic Surgery, the American College of Sports Medicine and the American Orthopaedic Society for Sports Medicine.

In addition to authoring and co-authoring a bevy of clinical research on a variety of orthopaedic topics, Dr. Mandelbaum has received numerous public accolades including designation as a Super Doctor in Sports Medicine and Orthopaedic Surgery for a consecutive 12-year period since 2007. Dr. Mandelbaum is also a frequent medical expert contributor to mainstream media publications and websites including Medscape, Sports Illustrated, NBC Sports, MSN and Men’s Health, as well as local and television news outlets, including NBC, ABC and Fox television affiliates.

Richard Rosenthal, MD

Richard Rosenthal, MD

Richard Rosenthal, M.D. is a world-renowned pain medicine physician who has incorporated regenerative injection therapies into his everyday pain medicine practice. He is board certified in anesthesiology, pain medicine, addiction medicine and interventional pain medicine. He graduated from the University of Utah medical school in 1985. In 1993 he graduated from an anesthesia residency at the University of Texas at San Antonio Medical Center. He is the founder, president, and Medical Director of Nexus Pain Specialists.

Dr. Rosenthal has distinguished himself as a leader in educating and training medical professionals in the fields of interventional pain and regenerative medicine. He is the editor of the interventional pain section of the widely read journal, Practical Pain Management. He has authored several scientific articles and book chapters on topics in the specialty of pain medicine. He is also involved in clinical research and has served as an expert witness in malpractice cases. His clinic was awarded the Excellence in Multi-disciplinary Pain Care award by the World Institute of Pain (one of only 4 clinics in the United States to receive the award in 2011).

Dr. Rosenthal has been practicing regenerative medicine for the past several years. He specializes in the use of total nucleated cells and platelet-rich plasma for the treatment of painful joints, including the knee, hip, and shoulder. His treatments are based on a comprehensive approach to relieving pain and improving function. Dr. Rosenthal has lectured on the topic of regenerative medicine, especially platelet-rich plasma and total nucleated cell treatments, for such prestigious organizations as the American Society of Interventional Pain Physicians and the Society for Pain Practice Management

George Chang Chien, DO

George Chang Chien, DO

George C. Chang Chien, D.O. specializes in regenerative musculoskeletal medicine and comprehensive pain management. He was trained in physical medicine & rehabilitation at the Rehabilitation Institute of Chicago, the #1 ranked rehabilitation hospital in the United States since 1991. After completion of his physiatry training, he completed fellowship training in comprehensive pain medicine at the prestigious Cleveland Clinic Anesthesiology Institute.

Dr. Chang Chien has authored over 100 manuscripts on a variety of topics including regenerative medicine, orthopedics, and advanced interventional procedural medicine. He has active research in regenerative medicine applications for medical aesthetics, pain management, sports-related injuries, and has been a collaborator on multiple multi-center studies.

Dr. Chang Chien speaks regularly throughout the world on regenerative medicine and pain management. His professional teaching experience includes being a CIPS examiner for the World Institute of Pain, ABIPP examiner for regenerative medicine and interventional pain, ultrasound course director at the Cleveland Clinic, regenerative medicine course director for American Society of Interventional Pain Physicians, and the Society for Pain Practice Management.

Dr. Chang Chien specializes in all aspects of regenerative medicine and has distinct expertise in platelet-rich plasma (PRP), bone marrow aspiration for total nucleated cells (BMAC), and adipose-derived total nucleated cells (ADSC).

Aaron Calodney, MD

Aaron Calodney, MD

Dr. Calodney earned his medical degree from the University of Missouri School of Medicine and completed a family medicine internship at St Joseph’s Hospital in Syracuse, New York. His residency in anesthesiology and subsequent interventional pain management fellowship was completed at the University of Texas Health Science Center at Houston. He subsequently completed a fellowship in pediatric anesthesia at the Denver Children’s Hospital. After spending several years as a faculty member in the Department of Anesthesiology at the UT medical school in Houston, Dr. Calodney moved to East Texas where he has practiced since 1991.

With particular interest in spine and special interests including neuromodulation and intrathecal drug delivery, biological treatment of the painful degenerative disc, peripheral nerve injury, and radiofrequency ablation, Dr. Calodney has presented and published many articles and textbook chapters. He is actively involved in clinical research and has delivered over 250 invited lectures in the US and abroad. Dr. Calodney also specializes in treating pain through the use of regenerative medicine and implements these techniques, when applicable, into his practice.

Dr. Calodney is a member of the American Society of Anesthesiologists, American Society of Regional Anesthesia and Pain Medicine, International Spine Intervention Society, International Neuromodulation Society, American Society of Interventional Pain Physicians, North American Neuromodulation Society, Texas Pain Society, Texas Medical Association, Texas Society of Anesthesiology, and the Smith County Medical Society.

Matt Murphy, PhD

Matt Murphy, PhD

Dr. Murphy designs and implements new strategies for the isolation and application of autologous total nucleated cells for the spine, orthopedics, and cardiovascular therapies. Dr. Murphy was a senior researcher at Methodist Hospital Research Institute in Houston, Texas, where he focused on the combination of adult total nucleated cells and biomaterials for regenerative medical applications in orthopedics, spine, pancreatic, and soft tissue repair.

At RICE, he researched novel biomaterials for bone and cartilage regeneration and developed targeted drug delivery strategies. He also worked at NASA on the design of new spacesuits for travel to the moon and Mars as part of the Constellation Program. He has authored twelve peer-reviewed publications and two textbook chapters related to tissue engineering and drug delivery. Dr. Murphy holds a PhD in bioengineering from Rice University and a B.S. in Chemical Engineering from The University of Texas at Austin.


An industry leader, we are dedicated to the science and research of regenerative medicine and its potential by supplying physicians with the best products on the market to treat their patients.

Privacy Policy

Contact Us

prp form

Ready to see how XCELL products can work for your practice?

In less than 30 seconds you can Sign up for a Free Demonstration

Free Demo of our Product

Please let us know your First Name.
Please let us know your email address.
Please give a phone number to reach you at.
Invalid Input