Sports Medicine, Orthopedic Care & Regenerative Innovation
It’s not just repair or recovery.
It’s your renewal, your reinvention.
Led by board-certified and fellowship-trained orthopedic surgeon Dr. Kerisimasi ‘Masi’ Reynolds, our clinic offers expert care in knee, shoulder, hip, and elbow conditions and injuries. With advanced training in orthobiologics and a commitment to patient-centered healing, Dr. Reynolds is recognized as one of the top orthopedic specialists serving Santa Cruz, Silicon Valley, Fremont, and San Jose. At the Masi Clinic, you’ll find trusted expertise, clear communication, and a collaborative path to recovery.
Biologics
- Platelet-Rich Plasma (PRP)
- Bone Marrow Aspirate Concentrate (BMAC)
- Hyaluronic Acid (HA) Injections
- Nutritional IVs
Shoulder
- AC Joint Reconstruction
- Bankart Repair
- Clavicle Fracture
- Frozen Shoulder
- Rotator Cuff Repair
- Shoulder Arthritis
- Shoulder Dislocation
- Shoulder Labral Tear
Elbow/Wrist
- Tennis Elbow
- Elbow Bursitis (Olecranon Bone)
- Biceps Tenodesis
- Golfer’s Elbow (Medial Epicondylitis)
- Cubital Tunnel Syndrome (Ulnar Nerve Entrapment)
- Biceps Tendon Tear
- Elbow Arthritis/Osteoarthritis
Knees
- Knee Arthritis
- Proximal Hamstring Tears
- ACL/MCL Ruptures
- Osteochondritis Dissecans
- Cartilage Defects
The Masi Method
Dr. Masi’s four-pillar approach to healing and performance integrates soul, structure, biology, and mindset. Mana is the life force that encompasses and is at the root of all, inherent in each individual and honoring the deeper connection between spirit, purpose, and healing. The Anatomical pillar focuses on structural care through orthopedic expertise, surgery, and rehabilitation. The Systemic pillar addresses cellular and physiological healing with regenerative therapies such as stem cells, PRP, peptides, and anti-inflammatory protocols. Finally, the Interoception pillar centers on mindset and self-awareness—cultivating belief, agency, and resilience as essential drivers of recovery and long-term performance.
People
At the Masi Clinic, people come first—whether it’s our team or the patients we serve. We treat everyone like family, fostering a culture of mutual respect, care, and collaboration. Our commitment to creating a supportive environment ensures that each patient feels seen, heard, and valued throughout their journey.
Process
We believe great outcomes start with a transparent and thoughtful process. From your first visit to post-treatment care, we prioritize clear communication, attention to detail, and consistency in delivering the highest quality of care. Our approach is designed to earn your trust through every step of the experience.
Empowerment
We take the time to explain your options, answer questions, and ensure you fully understand your care plan. By bringing patients into the process, we create a shared understanding and a sense of ownership in the path forward. We believe success is built through collaboration— when everyone is aligned and working toward a common vision.
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Dr. Masi Reynolds D.O.
Dr. Reynolds is fellowship-trained in sports medicine and advanced arthroscopy, having a special interest in treating the active population, including athletes at all levels, and volunteer orthopedic surgery mission work in underserved countries. He is the recipient of numerous awards and accolades, but prides himself most on his compassionate approach to patient care.
The Process
with Dr. Masi
Join Masi and a powerhouse lineup of guests—from pioneers in regenerative medicine to legends in extreme sports—as they dive into what it really takes to push limits, stay ahead of the curve, and fully embrace the ride along the way.