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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Kent E. Yinger, M.D.

Name
Kent E. Yinger, M.D.
Status
Active
Medical Group
Redwood Orthopaedics
City
Santa Rosa
Phone
707-544-3400
Subspecialty
Sports Medicine

Kevin Karlye Howe, M.D.

Name
Kevin Karlye Howe, M.D.
Status
Active
Medical Group
Redwood Orthopaedics
City
Santa Rosa
Phone
707-544-3400
Subspecialty
Hip, Knee, Sports Medicine

Mark E. Schakel, II, M.D.

Name
Mark E. Schakel, II, M.D.
Status
Active
Medical Group
Santa Rosa Orthopaedic Med Group
City
Santa Rosa
Phone
707-546-1922
Subspecialty
Foot/Ankle, General, WC Treatment

Michael Grafe, M.D.

Name
Michael Grafe, M.D.
Status
Active
Medical Group
Redwood Orthopaedics
City
Santa Rosa
Phone
707-544-3400
Subspecialty
Hand/Wrist

Michael J. McDermott, M.D.

Name
Michael J. McDermott, M.D.
Status
Active
Medical Group
Santa Rosa Orthopaedic Med Group
City
Santa Rosa
Phone
707-546-1922
Subspecialty
General, Hand/Wrist, Hip, Knee, Shoulder/Elbow, Sports Medicine, Total Joint, WC Treatment

Neema Pourtaheri, M.D.

Name
Neema Pourtaheri, M.D.
Status
Active
Medical Group
Santa Rosa Orthopaedic Med Group
City
Santa Rosa
Phone
707-546-1922
Subspecialty
General, Shoulder/Elbow, WC Treatment

Peter B.A. Pappas, M.D.

Name
Peter B.A. Pappas, M.D.
Status
Active
Medical Group
Santa Rosa Spine Institute
City
Santa Rosa
Phone
707-523-2381
Subspecialty
Spine, WC Medical-Legal

Roger A. Klein, M.D.

Name
Roger A. Klein, M.D.
Status
Active
City
Santa Rosa
Phone
707-576-0366
Subspecialty
Foot/Ankle, Hand/Wrist, Hip, Knee, Shoulder/Elbow, Sports Medicine, Total Joint, Trauma, WC Medical-Legal, WC Treatment

Thomas C. Degenhardt, M.D.

Name
Thomas C. Degenhardt, M.D.
Status
Active
Medical Group
Santa Rosa Orthopaedic Med Group
City
Santa Rosa
Phone
707-546-1922
Subspecialty
General, Knee, Shoulder/Elbow, Sports Medicine, Total Joint, WC Treatment

Thomas W. Axelrad, M.D.

Name
Thomas W. Axelrad, M.D.
Status
Active
Medical Group
Santa Rosa Orthopaedic Medical Group
City
Santa Rosa
Phone
707-546-1897
Subspecialty
General, Hip, Total Joint, Trauma, WC Treatment
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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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