Dirk R Diefendorf, M.D.
Specialty :
Orthopedics
Board Status :
Certified
Currently accepting new patients.
Office Location       
100 S. Ellsworth Ave., #607
San Mateo, Ca 94401

Phone :
(650) 347-0517
Fax :
(650) 347-0566
Directions from zipcode :
Our Office Hours
MondayTuesdayWednesdayThursdayFriday
9:00-12:009:00-12:009:00-12:009:00-12:009:00-12:00
2:00-5:002:00-5:002:00-5:002:00-5:002:00-5:00
My Appointment Hours
MondayTuesdayWednesdayThursdayFriday
 8:30-12:308:30-12:308:30-12:30 
 1:30-4:301:30-4:301:30-4:30 
Additional languages spoken in this practice
Spanish


My Credentials
Medical School :
Northwestern University
Internship :
Los Angeles County - University of Southern California Medical Center
Residency :
University of Southern California
Fellowships :
Sports Medicine
Professional Affiliations
American Academy of Orthopedic Surgeons
Arthroscopy Association of North America
California Medical Association
California Orthopedic Association
My Professional Interests
My professional interests include advanced arthroscopic surgical treatment of shoulder, knee, elbow, wrist, and ankle injuries, including arthroscopic rotator cuff repair, shoulder instability reconstruction and arthroscopic knee ligament and meniscal repair. I also perform minimally invasive knee & hip replacement surgery using minimal incision techniques. I have served as the Team Orthopedic Surgeon for Serra High School in San Mateo for 17 years and I have been the Team Orthopedic Surgeon for several local Peninsula colleges for the past 18 years.
My Personal Interests & Hobbies
I enjoy any and all outdoor athletic activities including golf, tennis, cycling, swimming and hiking. I am also an avid gardener and scuba diver. I have four wonderful children and a beautiful wife with whom I spend as much time as possible. I particularly enjoy caring for athletes and weekend warriors of all ages and provide the very best care possible to return them to the sports they enjoy.