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Meet Our Physicians

At OCC – Cornerstone Orthopedics, our team of highly trained physicians brings together decades of experience and specialized expertise to deliver exceptional orthopedic care. From sports injuries and joint replacement to spine, hand, foot, and ankle conditions, our providers are dedicated to helping patients return to the activities they love. Each physician is committed to personalized treatment, advanced techniques, and a collaborative approach to care—because your health is our highest priority. Get to know the talented team behind our trusted name in orthopedic excellence.

Robert Leland, MD

Robert Leland, MD

Specializing In:
Ankle, Foot
Joseph Hsin, MD

Joseph Hsin, MD

Specializing In:
Hip, Knee, Shoulder, Sports Medicine, Total Joint
William J. Ciccone II

William J. Ciccone II, MD

Specializing In:
Knee, Shoulder, Sports Medicine
Gregory Fasani-Feldberg, MD

Gregory Fasani-Feldberg, MD

Specializing In:
Neck, Spine
Nathan Bascom, DO

Nathan Bascom, DO

Specializing In:
Hip, Knee, Total Joint
Efren Caballes, DO, CAQSM

Efren Caballes, DO, CAQSM

Specializing In:
Non-surgical Sports Medicine, Physical Medicine & Rehabilitation
Thomas Mann, MD

Thomas Mann, MD

Specializing In:
Knee, Shoulder, Sports Medicine, Total Joint
Bari Madureira, DO, CAQSM

Bari Madureira, DO, CAQSM

Specializing In:
Non-surgical Sports Medicine, Physical Medicine & Rehabilitation
Lauren MacTaggart, MD

Lauren MacTaggart, MD

Specializing In:
Elbow, Hand, Shoulder
David M. Bierbrauer, MD

David M. Bierbrauer, MD

Specializing In:
Elbow, Hand
Daniel Ocel, MD

Daniel Ocel, MD

Specializing In:
Ankle, Foot
Micah Adamson, MD

Micah Adamson, MD

Specializing In:
Hip, Knee, Total Joint
Thomas Eickmann, MD

Thomas Eickmann, MD

Specializing In:
Hip, Knee, Total Joint