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Our Team


Brett Feldman, MSPAS, PA-C

Brett Feldman, MSPAS, PA-C is the Director of Street Medicine at the Keck School of Medicine of USC and serves as the Vice Chair of the Street Medicine Institute. He has practiced homeless medicine since 2007 and founded three programs including the DeSales University Free Clinic, Lehigh Valley Health Network (LVHN) Street Medicine in Allentown, PA, and recently at the USC Keck School of Medicine. In 2017, Mr. Feldman and LVHN hosted the 13th Annual International Street Medicine Symposium in Allentown, PA. He is a winner of the Pennsylvania Society of Physician Assistants Humanitarian of the Year Award, LVHN Walking on Water Award and Lehigh Valley Healthcare Hero Award. Areas of expertise include street medicine programs within a hospital or health network setting and student-run street medicine programs. His work has been featured in the Washington Post, PBS, CNN and Telemundo.


Jehni Robinson, MD 

Jehni Robinson, MD is the Chair of the Department of Family Medicine and a Professor of Clinical Family Medicine. She also serves as the associate dean of primary care. She received her undergraduate degree from Stanford and completed medical school at the Morehouse School of Medicine in Atlanta, GA, where she graduated Summa Cum Laude. Dr. Robinson completed her internship and residency at Harbor-UCLA in the Family Medicine Residency Program and completed a fourth-year chief residency and faculty development fellowship.

Previous to joining the team at USC, Dr. Robinson served as Chief Medical Officer at The Saban Free Clinic, formally the Los Angeles Free Clinic, where she developed interdisciplinary teams and created innovative models to provide comprehensive primary care to underserved communities.  She also served as Interim Clinical Director at The Community Clinic Association of Los Angeles County coordinating quality improvement activities across a consortium of community clinics and served as faculty in the Harbor UCLA Transforming Primary Care Fellowship where she developed curriculum, coached and developed Family Medicine Fellows and taught the principles of Patient-Centered Medical Home.

Dr. Robinson has a combination of practical administrative experience from leading a large, multiservice community clinic and experience in teaching and developing curriculum.  She is passionate about care for underserved communities, developing teams and creating an efficient patient-centered model of care that brings joy back into the practice of medicine. She is interested in developing reliable systems of care that improve quality across the multispecialty practice. She is also a skilled physician who has dedicated her career to caring for children, adolescents, adults and their families in the context of their community.


Brian Webb, MD

Brian Sean Webb, MD is a family medicine physician at the Keck Medicine of USC. After completing medical school at Michigan State University, he completed his internship and residency at Marquette General Hospital in family medicine. He completed military service as a U.S. Navy Hospital Corpsman, Preventative Medicine Specialist.

Previous to joining the team at USC as an Assistant Professor of Clinical Family Medicine, he has spent more than a decade dedicated to providing excellent care as a physician. He also has dedicated part of his career to being a mentor and instructor. Dr. Webb has published in the Journal of Family Practice and is passionate about sports medicine.


Jenica Ryu, MD

Jenica Ryu, MD received her Bachelor of Arts from the University of California, Berkeley and her Medical Degree from the University of California, Davis School of Medicine. She is currently an Assistant Professor of Family Medicine with the Keck School of Medicine at USC.

Since completing an HIV Fellowship in 2009, she has been providing care to HIV-positive patients at the Rand Schrader Clinic of LAC+USC Medical Center and its satellite site in Skid Row, which serves a predominantly homeless population. She has an interest in underserved populations with a specific focus on incarcerated persons living with HIV.



Josh Banerjee, MD 

Josh Banerjee, MD is a primary care physician and Associate Medical Director for Transitions of Care at LAC+USC Medical Center. He received his medical degree from New York University School of Medicine and completed his residency in internal medicine at the University of Southern California. Before returning to LAC+USC Medical Center, Dr. Banerjee was first an associate physician with Southern California Permanente Medical Group, and then a Clinical Instructor and NRSA Fellow in Primary Care and Health Services Research at UCLA. He recently completed a fellowship in health care leadership through the California Health Care Foundation (cohort 16).



Corinne Feldman, MMS, PA-C

Corinne T. Feldman, MMS, PA-C, is the Director of Didactic Education at the Primary Care Physician Assistant Program. In 2005, she graduated from Midwestern University in Downers Grove, Illinois, and has previously worked in trauma/general surgery, HIV medicine and complex geriatrics. She began working in homeless healthcare in 2007. She most recently taught as an assistant professor at DeSales University Physician Assistant Program.

In her career, she has remained dedicated to working with the underserved and is the co-founder and former executive director of the DeSales Free Clinic at the Allentown Rescue Mission providing care for homeless men. She also co-founded the DeSales Free Clinic at the Truth Home providing care for women recovering from human trafficking. She has served on the board of directors for the Allentown Rescue Mission and was recognized in 2012 by her peers as Humanitarian of the Year from the Pennsylvania Society of Physician Assistants. She has spoken nationally and internationally on social justice in medicine, cognitive dysfunction in homelessness and social determinants of health.  Research interest include cognitive dysfunction in the unsheltered homeless and adaptation of clinical guidelines for the street provider.


Kevin C. Lohenry, PhD, PA-C

Kevin Lohenry, PhD, PA-C, joined the Trojan family as Director of the Division of Physician Assistant Studies at the University of Southern California in March of 2011 after serving as Director of Midwestern University’s PA program in Glendale, AZ. Before working in Arizona, Dr. Lohenry was a practicing PA in Internal Medicine providing inpatient and outpatient services to his patients in Wheaton, IL. Dr. Lohenry has served as a Director at Large on the Board of Directors for the National Commission on Certification of Physician Assistants and served as President of the Physician Assistant Education Association in 2011. Dr. Lohenry has received federal grant funding focusing on interprofessional education and practice and several state-funded grants focusing on the PA workforce and diversity. He is also the principal investigator for a $2.6 million grant for disadvantaged students. He has published in the Journal of Physician Assistant Education, the Journal of the American Academy of Physician Assistants and Medical Education Online. Dr. Lohenry is a veteran of the United States Navy.


Gabrielle Johnson, MSN (c), BSN, RN, PHN, BSPH

Gabrielle Johnson, MSN (c), BSN, RN, PHN, BSPH, Clinical Coordinator of Keck School of Medicine of USC, Street Medicine, and current Doctor of Nursing Practice (DNP) and Family Nurse Practitioner (FNP) student. Gabrielle has worked with the underserved population for over eight years and concurrently runs the Azusa Pacific University, Homeless Outreach Clinic in the San Gabriel Valley. Gabrielle has dedicated her life to helping the homeless and is active in providing Street Medicine services to the homeless population of Los Angeles County. For her doctoral studies, Gabrielle is focusing on the prevention of Fetal Alcohol Spectrum Disorder in homeless women with a subset of homeless veteran women through the development and implementation of evidence-based practice changes.


Joseph Becerra

Joseph Becerra, Street Medicine Community Health worker, Certified Addiction Treatment Counselor and Certified Clinical Supervisor has worked with the underserved, incarcerated, at-risk youth and homeless for over fifteen years. Most recently, Joseph was working with the Department of Mental Health in the juvenile justice system and for a USC study focusing on Intravenous drug users. Over the years, Joseph has been involved with several non-profit organizations, assisted with the development of two youth programs and a Boys & Girls home for children in need, methadone clinics, needle exchanges, and Human trafficking prevention groups.

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