The Medical Opinion Marketplace

Jeffrey L. Rosenberg, MD, is a plastic and reconstructive surgeon in Los Angeles, California. He earned his medical degree from the Chicago Medical School at Rosalind Franklin University of Medicine and Science and completed surgical training at UC San Diego Medical Center, followed by additional residency training in surgery and plastic surgery at USC/Los Angeles General Medical Center. Dr. Rosenberg is a Fellow of the American College of Surgeons and a Diplomate of the American Board of Plastic Surgery. His clinical work encompasses plastic and reconstructive surgery, with a particular focus on burn care and the treatment of complex soft-tissue injuries. He is affiliated with PIH Health Good Samaritan Hospital in Los Angeles, where he contributes to surgical care across a range of reconstructive needs. Dr. Rosenberg is an active member of professional organizations including the American Society of Plastic Surgeons and the American Burn Association, reflecting a commitment to ongoing education and quality in patient care. He has also served in leadership within the specialty as Past President of the California Society of Plastic Surgeons. Through an emphasis on safety, function, and restoration, Dr. Rosenberg provides individualized surgical care tailored to each patient’s goals.

Jennifer M. Weiss, MD, is an orthopaedic surgeon with a clinical focus on pediatric orthopaedics and pediatric sports medicine. She is board certified in Orthopedic Surgery and is committed to helping children and adolescents return safely to activity through thoughtful, evidence-based care. Dr. Weiss earned her medical degree from the Mount Sinai School of Medicine. She completed a general surgery internship at Baylor College of Medicine, followed by an orthopaedic surgery residency at Baylor. She then pursued advanced subspecialty training through a pediatric orthopaedics fellowship at Children’s Hospital Los Angeles. Her clinical and academic interests include pediatric sports-related conditions, with published research addressing topics such as osteochondritis dissecans and related knee, ankle, and elbow disorders in young athletes. Dr. Weiss has also held leadership roles in pediatric sports medicine programming and has contributed service and leadership to professional organizations in orthopaedics and pediatric orthopaedics. In addition to clinical practice, she is active as a speaker and mentor, with professional interests that include career development and supporting women in medicine and orthopaedics.

Arlanna N. Moshfeghi, MD, is an ophthalmology physician with subspecialty expertise in pediatric ophthalmology. She serves as an Attending Physician at Children’s Hospital Los Angeles (CHLA) and holds academic appointments at the Keck School of Medicine of USC as an Assistant Professor of Clinical Ophthalmology and a Clinical Assistant Professor of Ophthalmology (Part-Time). Dr. Moshfeghi is board certified in ophthalmology by the American Board of Ophthalmology. Her clinical interests include the evaluation and treatment of amblyopia, adult and pediatric strabismus, and diplopia, with a focus on delivering individualized care for patients with complex ocular alignment and vision concerns. Her postgraduate training includes an internship at North Shore University Hospital, an ophthalmology residency at St. Vincent’s Catholic Medical Center, and fellowship training at Bascom Palmer Eye Institute in pediatric ophthalmology and adult strabismus. She also completed education at the Harvard School of Public Health. In addition to her clinical and teaching roles, Dr. Moshfeghi serves as Assistant Dean for Faculty Diversity at the Keck School of Medicine of USC, reflecting her commitment to improving health care and educational opportunities for people with disparate access.

Raymond Chen, MD, is a thoracic surgeon specializing in cardiothoracic and vascular surgery in Los Angeles, California. He is board certified in thoracic and cardiac surgery and provides comprehensive surgical care for complex heart and thoracic conditions, with a focus on safety, precision, and long-term recovery. Dr. Chen completed rigorous postgraduate training in general surgery at Brigham and Women’s Hospital, followed by advanced fellowship training in thoracic surgery through the Mass General Brigham/Brigham and Women’s/Children’s Hospital program. In addition to his clinical practice, he serves as Assistant Chief of the Regional Department of Cardiac Surgery for the Southern California Permanente Medical Group. A clinician-investigator in cardiac surgery, Dr. Chen’s work emphasizes using technology to improve outcomes after cardiac surgery, including approaches that combine telemedicine follow-up with ECG-enabled wearable monitoring to help reduce readmissions. His prior research examined immune mechanisms involved in cardiac graft rejection. He has received recognition for research contributions, including the John Mannick Resident Research Award and a Young Investigator’s Award from the International Society for Applied Cardiovascular Biology. Dr. Chen is also a Clinical Professor of Clinical Science at the Kaiser Permanente Bernard J. Tyson School of Medicine. He speaks English and Mandarin.

Larry Bernard, PhD, is a clinical neuropsychologist who provides comprehensive, complex diagnostic assessment and consultation for individuals with neurologic and central nervous system conditions. His clinical focus includes evaluation of cognitive and behavioral changes associated with head injury, stroke and other cerebrovascular disease, infectious brain diseases such as meningitis, degenerative disorders, and dementia. Dr. Bernard works primarily with young adults, adults, and older adults, and his practice is centered on detailed neuropsychological evaluation and interpretive consultation rather than ongoing psychotherapy. Board certified in Clinical Neuropsychology through the American Board of Clinical Neuropsychology and the American Board of Professional Psychology, he brings extensive experience to both clinical and forensic practice settings. He has participated on integrated, hospital-based rehabilitation teams supporting patients with brain and spinal cord injuries and has served as an Independent Medical Examiner for disability determinations. Dr. Bernard has also been involved in baseline assessment work related to professional sports concussion programs. In addition to his clinical work, Dr. Bernard is Professor Emeritus at Loyola Marymount University. He earned his doctorate in Clinical Psychology from the University of Southern California and is affiliated with leading professional organizations in psychology and neuropsychology.

David P. Masiello, MD, is a physician specializing in Hematology and Medical Oncology, with a foundation in Internal Medicine. He is board certified by the American Board of Internal Medicine in Internal Medicine, Hematology, and Medical Oncology. Dr. Masiello earned his medical degree from Boston University School of Medicine and completed residency training in Internal Medicine at Boston Medical Center. He subsequently completed fellowship training in Hematology/Oncology at LAC+USC Medical Center. Dr. Masiello provides comprehensive, patient-centered care for individuals with blood disorders and cancer, emphasizing clear communication, careful evaluation, and evidence-based treatment planning. He works collaboratively with multidisciplinary teams to tailor therapy to each patient’s diagnosis, goals, and overall health, and he supports patients and families throughout diagnosis, treatment, and follow-up. Fluent in English and Spanish, Dr. Masiello is committed to ensuring patients feel informed and respected in their care. He is affiliated with Huntington Hospital (Huntington Health).

Jonathan A. Ghiam, DO, is a family medicine physician who provides comprehensive, patient-centered care for individuals and families. He is board certified in Family Medicine through the American Board of Family Medicine and also holds osteopathic board certification in Family Practice and Osteopathic Manipulative Medicine. Dr. Ghiam’s clinical work includes both outpatient primary care and hospital-based medicine as a hospitalist, supporting patients across transitions of care and coordinating with multidisciplinary teams. Dr. Ghiam earned his medical degree from the College of Osteopathic Medicine of the Pacific at Western University of Health Sciences. He brings an osteopathic approach that emphasizes preventive care, whole-person wellness, and evidence-informed treatment plans tailored to each patient’s goals. In addition to his clinical practice, Dr. Ghiam is associated with a telehealth-focused preventive and metabolic health practice with an emphasis on evidence-based medical weight management. He is licensed to practice in California and Florida. Dr. Ghiam speaks Spanish and Farsi, helping him communicate effectively with a diverse patient population.

S. James Pak, DPM, is a podiatrist who provides comprehensive care for a wide range of foot and ankle conditions. He is board certified by the American Board of Podiatric Medicine in Primary Podiatric Medicine. Dr. Pak’s clinical interests include podopediatrics, biomechanics and gait-related concerns, diabetic foot care, and surgical management when appropriate. He focuses on helping patients reduce pain, improve mobility, and support long-term foot health through personalized treatment plans that may include preventive care, conservative therapies, and procedural options. Dr. Pak earned his podiatric medical degree from the California College of Podiatric Medicine in San Francisco and completed his podiatric residency training at UCSF Medical Center. He is affiliated with Providence Affiliated Physicians, St. Jude. Dr. Pak speaks English and Korean, supporting clear communication and patient-centered care for a diverse community.

Sangdo Park, MD, is a physician specializing in Sports Medicine within Orthopaedic Surgery. He provides comprehensive evaluation and management of sports- and activity-related musculoskeletal conditions, with an emphasis on helping patients return safely to work, sport, and daily life. Dr. Park earned his medical degree from Columbia University College of Physicians and Surgeons. He completed both his internship and residency training at the University of Pennsylvania Health Systems, and pursued advanced fellowship training in Sports Medicine at the Kerlan-Jobe Orthopaedic Clinic. He is board certified by the American Board of Orthopaedic Surgery. With more than two decades in practice, Dr. Park brings extensive experience to the care of athletes and active individuals, integrating evidence-based medicine with a patient-centered approach. He is affiliated with Cedars-Sinai Medical Center. Dr. Park speaks English, Spanish, and Korean, supporting clear communication and personalized care for a diverse patient community.

Julio Gutierrez, MD, is a board-certified internal medicine physician and transplant hepatologist specializing in advanced liver disease and liver transplantation. He is affiliated with Scripps Health/Scripps Clinic within the Organ Transplantation program, where he helps guide care for patients with complex hepatic conditions, including cirrhosis, metabolic liver disease, and hepatocellular carcinoma. Dr. Gutierrez serves as Director of Care Pathway in Transplant Hepatology/Organ Transplant at Scripps Clinic and holds an academic appointment as a Clinical Associate Professor in transplant hepatology. In addition to his clinical practice, he contributes to physician education through continuing medical education programming focused on contemporary management of chronic liver disease and emerging therapies. Dr. Gutierrez has also participated in peer-reviewed scholarship addressing liver disease outcomes and health disparities, including work related to hepatocellular carcinoma care in Hispanic communities. His approach emphasizes evidence-based, coordinated care and close collaboration with multidisciplinary transplant, oncology, and specialty teams to support patients and families through evaluation, treatment, and long-term follow-up.