California Orthopaedic Association

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Zachary Hadley, M.D.

Name
Zachary Hadley, M.D.
Status
Active
Medical Group
Arrowhead Orthopaedics
City
Redlands
Phone
909-557-1600
Subspecialty
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Thomas Tawab Haider, M.D.

Name
Thomas Tawab Haider, M.D.
Status
Semi-Retired
Medical Group
Haider Spine Center
City
Riverside
Phone
951-413-0200
Subspecialty
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Christopher A. Hajnik, M.D.

Name
Christopher A. Hajnik, M.D.
Status
Active
Medical Group
CORE Orthopaedic Medical Center
City
Encinitas
Phone
760-943-6700
Subspecialty

Jeffrey L. Halbrecht, M.D.

Name
Jeffrey L. Halbrecht, M.D.
Status
Active
City
San Francisco
Phone
415-923-0944
Subspecialty
, , , , ,

Neil J. Halbridge, M.D.

Name
Neil J. Halbridge, M.D.
Status
Active
Medical Group
Orthopaedic Medical Group of Riverside
City
Riverside
Phone
951-683-0650
Subspecialty
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William R. Hale, M.D.

Name
William R. Hale, M.D.
Status
Active
Medical Group
Orthopedic Medical Clinic
City
Pomona
Phone
909-623-8547
Subspecialty
, , , ,

Mark N. Halikis, M.D.

Name
Mark N. Halikis, M.D.
Status
Active
Medical Group
Orthopaedic Specialty Institute
City
Orange
Phone
714-937-2137
Subspecialty

Nicholas M. Halikis, M.D.

Name
Nicholas M. Halikis, M.D.
Status
Active
Medical Group
Coastal Ortho Advanced Orthopedics
City
Torrance
Phone
310-316-6190
Subspecialty

Michael P. Hall, M.D.

Name
Michael P. Hall, M.D.
Status
Active
Medical Group
Permanente Med Group - Ortho Dept.
City
Harbor City
Phone
310-665-7200
Subspecialty
, ,

James S. Hamada, M.D.

Name
James S. Hamada, M.D.
Status
Active
Medical Group
Orthopaedic Ctr for Excellence
City
Hawaiian Gardens
Phone
562-402-2068
Subspecialty
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Annual Meeting/QME Course

2026 Annual Meeting
Hilton Santa Barbara Beachfront Resort
April 16 – 19, 2026

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April 16 – 19, 2026
2026 Annual Meeting/QME Course
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April 1 – 4, 2027
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Indian Wells, CA (Palm Springs area)

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California Orthopaedic Association
1246 P Street
Sacramento, CA 95814

Phone: 916-454-9884
Fax: 916-454-9882
Email: admin@coa.org

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