California Orthopaedic Association

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  • Home
  • About COA
    • Origin & History
    • Mission
    • Bylaws
    • COA Board of Directors – Committee Chairs – Roster
    • Advertising
    • Staff
    • Contact/Forms
  • Membership
    • Join COA
    • Members
    • COA Member Directory
    • Member Discounts
    • Residents
    • Job Bank
    • Expense Form
  • Annual Meeting/QME Course
    • 2025 Annual Meeting/QME Course
    • Print CME Certificates
    • Future Meetings
    • Past Annual Meetings & QME Courses

COA Member Directory

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John R. Morris, M.D.

Name
John R. Morris, M.D.
Status
Active
Medical Group
Community Orthopaedic Medical Group
City
Mission Viejo
Phone
949-348-4000
Subspecialty
Hand/Wrist

Kent R. Adamson, M.D.

Name
Kent R. Adamson, M.D.
Status
Active
Medical Group
Community Orthopaedic Medical Group
City
San Clemente
Phone
949-233-3290
Subspecialty
Arthritis, General, Knee, Shoulder/Elbow, Total Joint

Kent S. Marangi, M.D.

Name
Kent S. Marangi, M.D.
Status
Active
Medical Group
Community Orthopaedic Medical Group
City
Mission Viejo
Phone
949-348-4029
Subspecialty
Knee, Shoulder/Elbow, Sports Medicine

Michael Burdi, M.D.

Name
Michael Burdi, M.D.
Status
Active
Medical Group
Community Orthopaedic Medical Group
City
Mission Viejo
Phone
949-348-4097
Subspecialty
Spine

Michael S. Marandola, M.D.

Name
Michael S. Marandola, M.D.
Status
Active
Medical Group
Community Orthopaedic Medical Group
City
Mission Viejo
Phone
949-348-4027
Subspecialty
Arthritis, Knee, Shoulder/Elbow, Sports Medicine, Total Joint

Stephen T. Gardner, M.D.

Name
Stephen T. Gardner, M.D.
Status
Active
Medical Group
Community Orthopaedic Medical Group
City
Mission Viejo
Phone
949-348-4000
Subspecialty
Arthritis, General, Hip, Knee, Shoulder/Elbow, Sports Medicine, Total Joint, Trauma, WC Treatment

Gregory J. Adamson, M.D.

Name
Gregory J. Adamson, M.D.
Status
Active
Medical Group
Congress Medical Associates
City
Pasadena
Phone
626-795-8051
Subspecialty
Shoulder/Elbow, Sports Medicine

John T. Quigley, M.D.

Name
John T. Quigley, M.D.
Status
Active
Medical Group
Congress Medical Associates
City
Arcadia
Phone
626-821-0707
Subspecialty
General, Hip, Knee, Total Joint

Allan A. Konce, M.D.

Name
Allan A. Konce, M.D.
Status
Active
Medical Group
Connecticut Street Medical Group
City
San Francisco
Phone
415-839-5130
Subspecialty
General, Shoulder/Elbow, WC Treatment

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
Total Joint
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Annual Meeting/QME Course

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

Upcoming COA Events

  • Thu
    16
    Apr
    2026
    Sun
    19
    Apr
    2026

    2026 Annual Meeting/QME Course

    Hilton Santa Barbara Beachfront Resort

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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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