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Theodore K Gregorius MD

(949) 759-3600
Primary Specialties
  • Orthopedic Surgery
Area of Expertise
  • Sports Medicine
  • Foot & Ankle
  • Hand & Wrist
  • Hip & Pelvic
  • Knee & Leg
  • Shoulder, Elbow & Arm
Medical Practice:
  • California Orthopaedic Specialists
Address
360 San Miguel Drive, Suite 701
Newport Beach, CA 92660
Map & Directions

Education & Training

Medical Education - Loma Linda University School of Medicine (MD)
Internship - Loma Linda University Medical Center (General Surgery)
Residency - UF Orthopedics and Sports Medicine Institute (Orthopedic Surgery)
Fellowship - Stanford University School of Medicine (Sports Medicine)

Board Certifications

  • American Board of Orthopedic Surgery (Orthopaedic Surgery)

Physician Bio

Dr. Gregorius is a board certified member of the American Board of Orthopaedic Surgery, and a Fellowship-trained Sports Medicine Specialist Orthopaedic Surgeon. He is also a Fellow member of the American Academy of Orthopaedic Surgeons and is an active member of California Orthopaedic Association.

Dr. Gregorius earned his undergraduate degree in History and Philosophy from Pacific Union College Suma Cum Laude while simultaneously completing his premedical curriculum. As an undergraduate student he was recognized with membership in the prestigious Phi Alpha Theta Honor Society. He also served as a student senator, senator pro tempore, and president of his graduating class. Following graduation, Dr. Gregorius attended Loma Linda University School of Medicine where he earned his medical degree.

After graduating from medical school Dr. Gregorius completed a year of surgical training at Loma Linda University Medical Center. Then he went on to complete his Orthopaedic Surgical Residency at the University of Florida Orthopaedic Surgery and Sports Medicine Institute at the University of Florida in Gainesville Florida. Dr. Gregorius received orthopaedic sports medicine experience while providing assistant team coverage to University of Florida Athletics Department and team coverage to local high school athletics throughout Alachua County.

Dr. Gregorius then matriculated to Stanford University/SOAR combined Sports Medicine Fellowship in Palo Alto California. Under the direction of Dr. Michael Dilligham and Dr. Gary Fanton he received sports-specific training in Arthroscopic Surgery in the management of injuries to the Shoulder, Elbow, Hip, and Knee. In addition to participation in an active surgical fellowship training program, Dr. Gregorius provided assistant team coverage to the San Francisco 49ers, Stanford Football, and SAP Open Tennis. During this time he received tutelage on sideline team-specific injuries.

Following completion of his fellowship Dr. Gregorius went on to become a faculty member at Loma Linda University Medical Center and Director of the Orthopaedic Medical Student Program.

Dr. Gregorius currently provides team coverage to the University of California Riverside Athletic Department and the Dodgers single-A affiliate Rancho Cucamonga Quakes.

Conditions Treated

  • AC Joint Separation (Shoulder)
  • Achilles Tendon Rupture (Foot & Ankle)
  • Achilles Tendonitis (Foot & Ankle)
  • ACL Injury / Anterior Cruciate Ligament Injury (Knee)
  • ACL Tear / Anterior Cruciate Ligament Tear (Sports Medicine)
  • Ankle Fracture (Foot & Ankle)
  • Ankle Instability (Foot & Ankle)
  • Ankle Sprain (Sports Medicine)
  • Anterior Knee Pain (Knee)
  • Baker’s Cyst (Knee)
  • Bankart Lesion (Sports Medicine)
  • Bicep Tendon Rupture (Sports Medicine)
  • Bicep Tendon Rupture / Tear (Elbow)
  • Bicep Tendonitis (Shoulder)
  • Broken Arm (Elbow)
  • Broken Collarbone / Collarbone Injuries (Shoulder)
  • Broken Finger (Hand & Wrist)
  • Broken Hand (Hand & Wrist)
  • Bursitis of the Hip / Hip Bursitis / Trochanteric Bursitis (Hip)
  • Carpal Tunnel (Hand & Wrist)
  • Cartilage Injuries (Sports Medicine)
  • Chondromalacia (Knee)
  • Clavicle Fracture (Shoulder)
  • Colles Fracture (Elbow)
  • Cubital Tunnel Syndrome (Elbow)
  • De Quervain's Disease (Hand & Wrist)
  • Dislocated Elbow (Elbow)
  • Dislocated Hip / Hip Dislocation (Hip)
  • Dislocated Knee / Knee Dislocation / Kneecap Dislocation (Knee)
  • Dislocated Patella / Sublaxation (Knee)
  • Dislocated Shoulder / Shoulder Dislocation (Sports Medicine)
  • Distal Biceps Tendon Rupture / Triceps Rupture (Shoulder)
  • Distal Radius Fracture (Hand & Wrist)
  • Elbow Arthritis (Elbow)
  • Elbow Bursitis (Elbow)
  • Elbow Contracture (Elbow)
  • Elbow Fracture / Fractured Elbow (Elbow)
  • Elbow Instability (Elbow)
  • Elbow Osteoarthritis / Osteoarthritis of the Elbow (Elbow)
  • Elbow Sports Injuries (Elbow)
  • Elbow Tendonitis (Elbow)
  • Femoral Acetabular Impingement (Hip)
  • Fibula Fracture (Foot & Ankle)
  • Fractured Wrist (Hand & Wrist)
  • Fractures (Sports Medicine)
  • Ganglion Cyst (Hand & Wrist)
  • Golfer's Elbow (Sports Medicine)
  • Groin Pain (Sports Medicine)
  • Hamstring Strain (Sports Medicine)
  • Hip Impingement (Hip)
  • Hip Pain (Hip)
  • Hip Sprain (Hip)
  • Humerus Fracture (Shoulder)
  • Hyperextended Elbow / Hyperextension of the Elbow (Elbow)
  • IT Band Syndrome / Iliotibial Band Syndrome (Knee)
  • Joint Pain (Knee)
  • Knee Bursitis / Goosefoot (Knee)
  • Knee Cartilage Injuries (Knee)
  • Knee Cysts (Knee)
  • Knee Ligament Injuries (Knee)
  • Knee Pain (Knee)
  • Knee Tendonitis (Knee)
  • Labral Tear of the Hip or Shoulder (Sports Medicine)
  • Labral Tears of the Shoulder / Bankart Lesion (Shoulder)
  • Labrum Tear (Hip)
  • Lateral Epicondylitis (Elbow)
  • LCL Injury (Knee)
  • LCL Injury / Lateral Collateral Ligament (Sports Medicine)
  • Little League / Elbow or Shoulder (Sports Medicine)
  • Little Leaguer's Elbow (Elbow)
  • Mallet Finger (Hand & Wrist)
  • MCL Injury / Medial Collateral Ligament (Sports Medicine)
  • MCL Injury / Medial Collateral Ligament Injury (Knee)
  • Meniscus Tear (Knee)
  • Meniscus Tear / Meniscal Tear (Sports Medicine)
  • Metacarpal Fracture (Hand & Wrist)
  • Muscle Injury (Knee)
  • Olecranon Bursitis (Elbow)
  • Olecranon Fractures (Elbow)
  • Osgood-Schlatter Disease (Knee)
  • Osteoarthritis of the Knee / Knee Osteoarthritis (Knee)
  • Osteochondral Defect (OCD) of Capitellum (Shoulder)
  • Osteochondritis Dissecans (Elbow)
  • Osteonecrosis / Avascular Necrosis (Knee)
  • Osteoporosis (Shoulder)
  • Patellar Tendinitis (Knee)
  • Patellar Tendonitis / Patella Tendonitis (Sports Medicine)
  • Patellofemoral Pain Syndrome (Knee)
  • PCL Injury / Posterior Cruciate Ligament (Sports Medicine)
  • PCL Injury / Posterior Cruciate Ligament Injury (Knee)
  • Pinched Nerve (Elbow)
  • Radial Collateral Ligament Sprain (Elbow)
  • Radial Tunnel Syndrome (Elbow)
  • Rotator Cuff Injury / Rotator Cuff Tear (Shoulder)
  • Runner's Knee (Knee)
  • Runner's Knee / Chondromalacia Patella (Sports Medicine)
  • Separated Shoulder (Sports Medicine)
  • Shin Splints (Sports Medicine)
  • Shoulder Arthritis (Shoulder)
  • Shoulder Bursitis (Shoulder)
  • Shoulder Calcific Tendonitis (Shoulder)
  • Shoulder Fractures (Shoulder)
  • Shoulder Impingement (Shoulder)
  • Shoulder Instability (Sports Medicine)
  • Shoulder Sports Injuries (Shoulder)
  • SLAP Lesion Tear (Sports Medicine)
  • SLAP Lesion Tear / Shoulder Lebrum Tear (Shoulder)
  • Snapping Hip (Hip)
  • Sports Concusion (Sports Medicine)
  • Sprained Elbow (Elbow)
  • Sprains and Strains (Sports Medicine)
  • Strained Elbow (Elbow)
  • Strained Hip (Hip)
  • Strained Knee (Knee)
  • Synovitis (Sports Medicine)
  • Synovitis of the Hip (Hip)
  • Tendinosis (Elbow)
  • Tennis Elbow (Sports Medicine)
  • Tennis Elbow / Lateral Epicondylitis (Elbow)
  • Throwing Injuries (Shoulder)
  • Triceps Tendonitis (Elbow)
  • Trigger Finger (Hand & Wrist)
  • UCL Tear / Ulnar Collateral Ligament Tear (Sports Medicine)
  • Ulnar Collateral Ligaments Injuries (Elbow)
  • Ulnar Nerve Entrapment (Elbow)
  • Dislocated Shoulder / Shoulder Dislocation (Shoulder)
  • Groin Pain (Hip)
  • IT Band Syndrome / Iliotibial Band Syndrome (Hip)
  • Separated Shoulder (Shoulder)
  • Shoulder Instability (Shoulder)