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7485 Mission Valley Road, Suite 104A,
San Diego, CA 92108
Phone (619) 291-8930
Fax (619) 291-8491

Meet Our Surgeons

William S. Adsit, MD

William S. Adsit, MD
Board-Certified
Orthopaedic Surgeon

    Specialties:
  • Knee & Shoulder Arthroscopy
  • ACL Reconstruction
  • Joint Replacement
  • Sports Medicine
    Hospital Affiliations:
  • Mission Valley Heights Surgery Center
  • Scripps Mercy Hospital, San Diego
John C. Austin, MD

John C. Austin, MD
Board-Certified
Orthopaedic Surgeon

    Specialties:
  • Arthroscopy
  • Joint Replacement of the Knee, Hip & Shoulder (Including Direct Anterior Approach for Hip Replacement)
  • Computer Navigated Surgery
    Hospital Affiliations:
  • Mission Valley Heights Surgery Center
  • Scripps Mercy Hospital, San Diego
  • Scripps Mercy Outpatient Pavilion
  • Paradise Valley Hospital
L. Randall Mohler, MD

L. Randall Mohler, MD
Board-Certified
Orthopaedic Surgeon

    Specialties:
  • Arthroscopy
  • Hand Surgery
  • Joint Replacement
  • Sports Medicine
    Hospital Affiliations:
  • Mission Valley Heights Surgery Center
  • Scripps Mercy Hospital, San Diego
  • Scripps Mercy Outpatient Pavilion
  • Sharp Memorial Hospital
  • Paradise Valley Hospital
Drew Peterson, MD

Drew Peterson, MD
Board-Certified
Orthopaedic Surgeon

    Specialties:
  • Hands & Upper Extremities
  • Hand & Wrist Reconstruction
  • Foot & Ankle Arthroscopy / Reconstruction
  • Sports Medicine
    Hospital Affiliations:
  • Mission Valley Heights Surgery Center
  • Scripps Mercy Hospital, San Diego
  • Scripps Mercy Outpatient Pavilion
Jeffrey E. Schultz, MD

Jeffrey E. Schultz, MD
Board-Certified
Orthopaedic Surgeon

    Specialties:
  • Joint Replacement
  • Knee & Shoulder Arthroscopy
  • Sports Medicine
    Hospital Affiliations:
  • Mission Valley Heights Surgery Center
  • Scripps Mercy Hospital, San Diego
Steven Tradonsky, MD

Steven Tradonsky, MD
Board-Certified
Orthopaedic Surgeon

    Specialties:
  • Arthroscopic Surgery
  • Shoulder Surgery
  • Joint Replacements
  • Sports Medicine
    Hospital Affiliations:
  • Mission Valley Heights Surgery Center
  • Scripps Mercy Hospital, San Diego
  • Scripps Mercy Outpatient Pavilion
Michael H. Quinn, MD

Michael H. Quinn, DPM
Board-Certified
Podiatrist

    Specialties:
  • Podiatry
  • Foot, Ankle Surgery & Trauma
  • Custom Orthotics & Bracing
  • Sports Medicine
    Hospital Affiliations:
  • Mission Valley Heights Surgery Center
  • Scripps Mercy Hospital, San Diego
William Tontz Jr., MD

William Tontz Jr., MD
Board-Certified
Orthopaedic Surgeon

    Specialty:
  • Spine Surgery
    Hospital Affiliations:
  • Mission Valley Heights Surgery Center
  • Scripps Mercy Hospital, San Diego
  • Scripps Mercy Hospital, Chula Vista
  • Otay Lakes Surgery Center
  • Paradise Valley Hospital

Meet the Executive Director

Joan McComb

Joan McComb

Joan McComb is the Executive Director for California Orthopaedic Institute. With over 35 years of experience in healthcare management and business, she has devoted herself to developing and maintaining successful orthopaedic and occupational medicine clinics throughout the west. She has been director for California Orthopaedic Institute for 20 years. During this time, she was instrumental in building our current state-of-the-art facility with the addition of an imaging/MRI center and a rehabilitation clinic that includes physical and occupational therapy services. With her education and leadership in healthcare management, she is dedicated to the continued growth and expansion of our physician and support staff as well as patient services.