California Orthopaedic Association

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COA Member Directory

Keith E. Louwenaar, M.D.

Name
Keith E. Louwenaar, M.D.
Status
Semi-Retired
City
Sparks
Phone
775-354-2516
Subspecialty

David W. Lowenberg, M.D.

Name
David W. Lowenberg, M.D.
Status
Active
Medical Group
Stanford - Orthopaedic Dept.
City
Redwood City
Subspecialty

Michael C. Luciano, M.D.

Name
Michael C. Luciano, M.D.
Status
Active
Medical Group
MCL Health Management
City
Orange
Phone
714-547-4070
Subspecialty
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James V. Luck, Jr., M.D.

Name
James V. Luck, Jr., M.D.
Status
Semi-Retired
Medical Group
Orthopaedic Institute for Children
City
Los Angeles
Phone
213-749-8255
Subspecialty
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Carlos Lugo, M.D.

Name
Carlos Lugo, M.D.
Status
Active
Medical Group
Emanate Health
City
West Covina
Phone
626-918-6655
Subspecialty
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Gordon C. Lundy, M.D.

Name
Gordon C. Lundy, M.D.
Status
Active
City
San Francisco
Phone
415-923-3015
Subspecialty
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Nancy Maureen Lynch, M.D., MBA

Name
Nancy Maureen Lynch, M.D., MBA
Status
Active
Medical Group
Advisorthopaedics Inc.
City
San Mateo
Phone
650-393-5411
Subspecialty

Steven M. Ma, M.D.

Name
Steven M. Ma, M.D.
Status
Active
City
Santa Ana
Phone
714-543-4211
Subspecialty

Robert MacArthur, M.D.

Name
Robert MacArthur, M.D.
Status
Active
City
Irvine
Phone
210-238-4637
Subspecialty

Gregory R. Mack, M.D.

Name
Gregory R. Mack, M.D.
Status
Semi-Retired
Medical Group
San Diego Hand Specialists
City
San Diego
Phone
858-715-9200
Subspecialty
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Annual Meeting/QME Course

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

Upcoming COA Events

April 16 – 19, 2026
2026 Annual Meeting/QME Course
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April 1 – 4, 2027
2027 Annual Meeting/QME Course
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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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