George C. Chang Chien DO

Dr. George Chang Chien specializes in musculoskeletal medicine and comprehensive pain management. He was trained in Physical Medicine & Rehabilitation at theRehabilitation 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. One of the top graduates of his class at Western University of Health Sciences, he was elected President of Sigma Sigma Phi, the Osteopathic medical school honor and service society. Dr. Chang Chien has authored over 100 manuscripts on the diagnosis and treatment of pain and musculoskeletal conditions. He has active research in regenerative medicine applications for chronic pain, medical aesthetics, and musculoskeletal medicine. 

His professional ultrasound teaching experience in musculoskeletal and interventional pain management includes Course Director at the Cleveland Clinic Pain Medicine Annual Ultrasound Course, Course Director for the Ultrasound for Regenerative Medicine for the American Society of Interventional Pain Physicians (ASIPP) workshop, Apex Biologix, Dannemiller, and the Society for Pain Practice Management  (SPPM). 


Dr. Chang Chien specializes in regenerative medicine with expertise in platelete rich plasma (PRP), bone marrow aspiration for stem cells (BMAC), and adipose derived stem cells (ADSC).  He is also an expert in comprehensive pain management, non-surgical orthopedics, and functional restoration. 


He is currently the Director of Pain Management at Ventura County Medical Center, Director of Center Regenerative Medicine at Southern California University, and serves alongside Sudhir Diwan MD, as the Regenerative Medicine Section Co-Editor for Pain Physician Journal. 


Frederick Ethan Weiss, MD, PT, DPT, RMSK

Dr. Frederick Weiss received his Bachelor's in Health Studies in 2002 and Doctorate of Physical Therapy in 2004.  From there, he went on to The George Washington University of School of Medicine and Health Sciences, elected to Alpha Omega Alpha and graduated with distinction in 2008 with a Doctor of Medicine.  Dr. Weiss pursued a Transitional Year internship through Georgetown University and recently completed Diagnostic Radiology residency at University of Maryland in June of 2013.  Dr. Weiss completed a Musculoskeletal and Neuroradiology Hybrid Imaging Fellow at Thomas Jefferson University Hospital, specializing in diagnostic and interventional musculoskeletal and neurologic procedures in 2014. He completed his ACGME Accredited Pain Medicine fellowship at the University of Pennsylvania. 

Throughout medical school, Dr. Weiss acted as a course facilitator for Boston University's online transitional DPT program, assisting in courses such as Health Care Management, Health Promotion and Wellness, Diagnostics, and Evidence-Based Practice.  Throughout radiology residency and fellowship, Dr. Weiss lead entire courses on Clinical Neuroanatomy and Medical Neurology at University of Delaware's entry-level DPT program, as well as lecturing on hematology/oncology, lymphatics and infectious disease.  He also taught basic neuroscience lectures for University of Maryland's DPT program.  Dr. Weiss instructs multiple continuing education courses on brain and spine imaging, and is a leader in musculoskeletal ultrasound and interventional pain management. 


He is currently a Emergency, Trauma & MSK/Spine Radiologist

Geisinger Medical Center



Medical Aesthetics   musculoskeletal Rehabilitation 

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Arthur S. Watanabe MD, PHARMD, FIPP, DABIPP 


Dr. Arthur Watanabe is an interventional radiologist with Pinnacle Pain Center in Kennewick, WA, and former Medical Director at Spinal Diagnostics and Open MRI. Dr. Watanabe is a board certified radiologist with subspecialty training in Neuroradiology, musculoskeletal imaging and interventional pain management.

He graduated from the University of Cincinnati College Of Medicine and completed an internal medicine internship and diagnostic radiology residency at the University of Utah Medical Center and his Neuroradiology/MRI fellowship at Long Beach Memorial Hospital.

He is a Clinical Assistant Professor of Radiology at the University of Washington School of Medicine. He is board certified in interventional pain management by the American Board of Interventional Pain Management and is currently the President of the Washington Society of Interventional Pain Physicians.

Enrique Galang MD

Dr. Enrique Galang, MD completed his Physical Medicine and Rehabilitation training at The East Carolina University - Brody School of Medicine. During residency, the research he was involved with was awarded the President's Citation Award by the American Academy of Physical Medicine and Rehabilitation. He completed intensive training in Musculoskeletal Medicine focusing on non-surgical orthopedics at the Cleveland Clinic with a focus on diagnostic and interventional musculoskeletal ultrasound. Dr. Galang then completed a Pain Medicine fellowship at the University of South Florida. 

Dr. Galang has been course faculty for ultrasound courses at The East Carolina University and Case Western Reserve University. His research interests lie in the application of ultrasound technology to musculoskeletal care and the burgeoning field of regenerative medicine with the hopes of providing innovative solutions within these respective fields. His current research involves the use of interventional musculoskeletal ultrasound in patients with knee osteoarthritis. He is passionate about maximizing the potential of musculoskeletal ultrasound and teaching ultrasound to other medical professionals.


Dr. Galang is currently an Assistant Professor in the Department of Physical Medicine and Rehabilitation at the University of North Carolina.