Christopher "Topher" Larkin Stephenson, MD, is the founder and CEO of Rincon Physical Medicine & Rehabilitation Rehab, where he has built one of the most comprehensive and technologically advanced traumatic brain injury (TBI) treatment practices providers in the country. A specialist in Physical Medicine & Rehabilitation (PM&R) and Brain Injury Medicine, Dr. Stephenson brings a rare combination of clinical depth, entrepreneurial vision, and personal dedication to every patient he serves.

Dr. Stephenson earned his MD from the University of New Mexico School of Medicine in 2004. He is board-certified in both PM&R and Brain Injury Medicine and holds active medical licenses in California, Nevada, Washington, Utah, Arizona, and Colorado.

Before founding Rincon Rehab, he spent seven years with Dignity Health in Northern California, where he rose to director of the PM&R division and oversaw an inpatient rehabilitation unit.
At the core of Dr. Stephenson's practice is a precision medicine approach to brain injury, one that leverages cutting-edge diagnostics and technology to develop highly individualized treatment plans tailored to each patient's specific injuries and personal goals. His multi-specialty TBI program coordinates care across disciplines, ensuring that patients receive not just isolated treatment, but a cohesive, whole-person recovery strategy.

Dr. Stephenson is a member of the American Academy of Physical Medicine and Rehabilitation (AAPM&R) and the American Board of Physical Medicine and Rehabilitation (ABPM&R). He previously served as both Vice Chair and Chair of the Brain Injury Association of California, the state affiliate of the Brain Injury Association of America. Outside the clinic, Dr. Stephenson's life reflects the same drive and sense of purpose that defines his medical career. An Eagle Scout and former U.S. Forest Service Hotshot crew member, he once guided white water rafting trips on the Colorado River and co-founded both the University of New Mexico Clown Care Unit and the Medical Muse Literary Magazine. Today, he recharges mountain biking, fly fishing, and white-water rafting.otshot crew member, he once guided white water rafting trips on the Colorado River and co-founded both the University of New Mexico Clown Care Unit and the Medical Muse Literary Magazine. Today, he recharges through mountain biking, fly fishing, and white-water rafting.

Dr. Stephenson brings both compassion and curiosity to his patient relationships. "Being able to sit down in front of a patient and listen carefully to their story helps me understand how their injuries have changed their world and the way they live in it," he says. It is that attentiveness, to the science, to the person, and to the possibilities of recovery, that defines his approach to medicine.

Raushan Rozenberg FNP-BC is a certified Family Nurse Practitioner specializing in the evaluation and management of traumatic brain injury. With over a decade of clinical experience, Raushan has practiced across leading academic medical centers, including UCSF, Johns Hopkins, Georgetown University Hospital, and George Washington University Hospital in diverse clinical settings, including critical care, trauma, oncology, and urgent care. Her broad clinical background and patient-centered approach support comprehensive, high-quality care for individuals with complex medical needs.

Rebecca has been in healthcare since 2002, with a strong background in mental health care and emergency services. She’s passionate about teamwork, self-care, and supporting one another so we can provide the best care to our patients. She’s always happy to offer a kind word or a pick-me-up.