Board Certified Orthopaedic Surgeon with particular expertise in Shoulder, Hip, Knee
Dr. Gregorius has extensive experience working with world-renowned athletes, and several sports teams, including providing team coverage to the University of California Riverside Athletic Department and the Dodgers single-A affiliate Rancho Cucamonga Quakes. He also provided assistant team coverage to the San Francisco 49ers, Stanford Football, and SAP Open Tennis.
Dr. Gregorius has carefully crafted and uses cutting-edge arthroscopy techniques of the shoulder, elbow, hip, and knee, as well as in joint preserving and reconstructive procedures of the shoulder and hip. As an avid surfer and free diver, Dr. Gregorius understands the competitive nature and needs of an athlete.
Dr. Gregorius's Specialties
Dr. Gregorius’ goal is to provide quality care so that patients of all ages may return to an active and healthy lifestyle.
Femoroacetabular Impingement Surgery
Labral Tear of the Hip (Acetabular Labrum Tear)
Rotator Cuff Injury / Rotator Cuff Tear
SLAP Lesion Tear / Shoulder Labrum Tear
Anterior Cruciate Ligament Injury (Knee) ACL Tear
PCL Injury / Posterior Cruciate Ligament
Lateral Collateral Ligament
MCL Injury / Medial Collateral Ligament
Pediatric Sports Injuries
Training and Education
Fellowship: 2005-2006 Stanford University/SOAR, Palo Alto, CA Arthroscopic Surgery and Sports Medicine
Residency: 2001-2005 Orthopaedic Surgery; University of Florida Orthopaedics and Sports Medicine Institute Orthopaedic Surgery
Medical School: 1996-2000 Loma Linda University School of Medicine
College: 1994-1995 La Sierra University; Physical and Biological Science 1993-1993 Southern Utah University; Physical and Biological Science 1989-1993 Pacific Union College; Bachelor of Science Summa cum laude
1st, 2nd & 4th Friday
NOTE: Schedule may vary slightly due to hospital schedules. Call the clinic for more information 949-759-3600.
More about Dr. Gregorius
I was born on a Texas Air Force base while my dad was serving as an Air Force surgeon. We returned to California for my father to complete his Neurosurgery Residency. I spent my early years in Westwood while my father was a resident and professor of Neurosurgery at UCLA.
Having been exposed to medicine at an early age, I wanted to emulate my father. We spent many days rounding together and at that time I was even able to see him operate. Obviously, this had a profound influence on my decision-making. In addition, my great grandfather, and grandfather were also medical doctors so in many ways it seemed natural to pursue medicine.
The most important factor in the doctor-patient relationship is great communication and parallel goals. I hope to create a stress-free opportunity for the patients to learn about their injuries and treatment options. I love practicing medicine because it’s a tactile application of your life view. In my case; to serve others and do what is essential.
In my free time, I enjoy spending time with my wife and three boys. Outside of medicine, our lives revolve around the ocean. We surf almost daily. In addition, we are avid travelers and we particularly enjoy visiting the South Pacific and Central America. Outside of surfing we also love fishing and spearfishing in our local waters. Our boys love to catch fish and make their own sushi. Throughout the summer months, we spend time on our boat with friends and family.