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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Ghassan S. Tooma, M.D.

Name
Ghassan S. Tooma, M.D.
Status
Active
Medical Group
Corona Temecula Orthopaedic Associates
City
Corona
Phone
951-735-6060

John S. Locke, M.D.

Name
John S. Locke, M.D.
Status
Active
Medical Group
Corona Temecula Orthopaedic Associates
City
Corona
Phone
951-735-6060
Subspecialty
Sports Medicine

Juan A. Realyvasquez, M.D.

Name
Juan A. Realyvasquez, M.D.
Status
Semi-Retired
City
Corona
Phone
267-252-6743
Subspecialty
General, Pediatrics, WC Medical-Legal, WC Treatment

Mitchell H. Geiger, M.D.

Name
Mitchell H. Geiger, M.D.
Status
Active
Medical Group
Mitchell Geiger MD, Inc.
City
Corona
Phone
951-734-7562
Subspecialty
Foot/Ankle, Hand/Wrist, Hip, Knee, Shoulder/Elbow, WC Medical-Legal, WC Treatment

Bill W.B. Yeung, M.D.

Name
Bill W.B. Yeung, M.D.
Status
Semi-Retired
Medical Group
Valley View Medical
City
Corona Del Mar
Phone
714-562-8632
Subspecialty
General, WC Medical-Legal

Theodore B. Tanzer, M.D.

Name
Theodore B. Tanzer, M.D.
Status
Inactive
City
Corona Del Mar
Phone
949-903-1830
Subspecialty
Foot/Ankle

Chris S. Pallia, M.D.

Name
Chris S. Pallia, M.D.
Status
Active
Medical Group
Synergy Orthopedic Specialists
City
Coronado
Phone
619-435-7282
Subspecialty
Sports Medicine, WC Treatment

Marc H. Zimmerman, M.D.

Name
Marc H. Zimmerman, M.D.
Status
Inactive
City
Coronado
Phone
619-888-5133
Subspecialty
General

William L. Hennrikus, M.D.

Name
William L. Hennrikus, M.D.
Status
Semi-Retired
City
Coronado
Phone
559-313-0554
Subspecialty
Pediatrics, Sports Medicine

Max H. Matos, M.D.

Name
Max H. Matos, M.D.
Status
Semi-Retired
City
Costa Mesa
Phone
714-751-8110
Subspecialty
General, WC Medical-Legal
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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
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    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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