Dr. Dirk Diefendorf, MD

Dr. Dirk Diefendorf, MD

Sports Medicine  ·  
Male  ·  
Age 62
(26)
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Dr. Dirk Diefendorf, MD is a sports medicine specialist in San Mateo, CA and has been practicing for 30 years. He graduated from Northwestern University The Feinberg School Of Medicine in 1983 and specializes in sports medicine and orthopedic surgery.

101 S San Mateo Dr Ste 212

San Mateo, CA 94401

Contact Information

Insurance Accepted

  • Aetna
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of California
  • Blue Shield of California
  • Cigna
  • Commercial Insurance Company
  • First Health (Coventry Health Care)
  • Health Net
  • Humana
  • 3 More

*Please verify this information when scheduling an appointment.

Background Check

No malpractice claims found for California
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
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Experience Check

Check if Dr. Diefendorf treats your condition or procedure

Dr. Diefendorf's conditions and procedures:

  • Achilles Tendinitis
  • ACL Surgery
  • Adhesive Capsulitis
  • All Shoulder or Elbow Replacement Procedures
  • Ankle Arthroscopy
  • Ankle Fracture
  • Ankle Fracture Repair
  • Ankle Sprain and Achilles Tendon Sprain or Rupture
  • Ankle Sprains and Strains
  • Anterior Cruciate Ligament (ACL) or Posterior Cruciate Ligament (PCL) Tear
  • Arm Surgery
  • Arthritic Shoulder Reconstruction
  • Arthritis of the Elbow
  • Arthroscopic Shoulder Reconstruction
  • Arthroscopic Shoulder Repair
  • Arthroscopic Shoulder Surgery
  • Ataxia
  • Baker’s Cyst
  • Bone Disorders
  • Broken Arm
  • Bunion
  • Bursitis
  • Carpal Tunnel Release
  • Carpal Tunnel Syndrome
  • Cervical Spine Myelopathy
  • Chondrocalcinosis
  • Chronic Neck Pain
  • Clavicle Fracture
  • Coccyx or Sacrum Fracture
  • Complications of Joint Prosthesis
  • De Quervain's Disease
  • Difficulty With Walking
  • Dressing and-or Debridement of Wound, Infection, or Burn (incl. Negative Pressure Wound Therapy)
  • Dupuytren's Contracture
  • Elbow Bursitis
  • Elbow Fracture and Dislocation Treatment
  • Elbow Fracture and-or Dislocation Treatment, Closed
  • Elbow Fracture and-or Dislocation Treatment, Open
  • Elbow Injuries
  • Elbow Sprain
  • Enthesopathy of Hip (incl. Trochanteric Bursitis)
  • Enthesopathy of Knee (incl. Bursitis of Knee)
  • Epidural Block, Facet Blocks
  • Excision of Femur or Knee
  • Excision of Radius or Ulna
  • Excision of Scapula, Clavicle, Rib, or Sternum
  • Excision of Tibia or Fibula
  • Femur Fracture
  • Foot and Ankle DislocationTreatment, Open
  • Foot and Ankle Fracture and Dislocation Treatment
  • Foot and Ankle Fracture Treatment, Open
  • Foot and Ankle Ligament and Tendon Repair
  • Foot Conditions
  • Foot Fracture
  • Foot Sprain
  • Fracture
  • Fracture and-or Dislocation Treatment
  • Fracture Care
  • Fracture of Hand (incl. Fingers)
  • Fracture Open Reduction and Internal Fixation (ORIF)
  • Gait Abnormality
  • Ganglion Cyst
  • Glenoid Labrum Repair
  • Glenoid Labrum Tear
  • Gout
  • Hammer Toe
  • Hand and Wrist Fracture and Dislocation Treatment
  • Hand and Wrist Fracture Treatment, Closed
  • Hand and Wrist Fracture Treatment, Open
  • Hand Conditions
  • Hand Fracture
  • Herniated Disc
  • Hip Fracture
  • Hip Fracture and Dislocation Treatment
  • Hip Fracture and-or Dislocation Treatment, Closed
  • Hip Fracture and-or Dislocation Treatment, Open
  • Hip Pointer Injuries
  • Hip Replacement
  • Hip Sprain
  • Internal Derangement of Knee
  • Joint Drainage
  • Joint Pain
  • Knee and Leg Fracture and Dislocation Treatment
  • Knee and Lower Leg Fracture Treatment, Closed
  • Knee and Lower Leg Fracture Treatment, Open
  • Knee Arthroscopy
  • Knee Dislocation
  • Knee Dislocation Treatment
  • Knee Disorders
  • Knee Fracture
  • Knee Replacement
  • Knee Replacement Revision
  • Knee Sprain
  • Knee Surgery
  • Lateral and Medial Epicondylitis (Tennis and Golf Elbow)
  • Lateral Collateral Ligament (LCL) Sprain
  • Leg Fracture Above Knee (incl. Hip)
  • Leg Fracture Below Knee (incl. Ankle)
  • Limb Pain
  • Low Back Pain
  • Lumbar Spine Fracture
  • Medial Collateral Ligament (MCL) Sprain
  • Myofascial Trigger Point Injection
  • Neck Muscle Strain
  • Nerve Root Injury and Plexus Disorders (incl. Pinched Nerve)
  • Neuroplasty
  • Non-Unions and Malunions of Fractures
  • Osgood Schlatter Disease
  • Osteoarthritis
  • Osteoarthritis of Ankle and Foot
  • Osteoarthritis of Hand or Wrist
  • Osteoarthritis of Hands
  • Osteoarthritis of Hip
  • Osteoarthritis of Hip and Thigh
  • Osteoarthritis of Knee
  • Osteoarthritis of Shoulder
  • Patellofemoral Pain Syndrome or Knee Pain
  • Pelvic Fracture
  • Peripheral Nerve Disorders
  • Plantar Fasciitis
  • Pyogenic Arthritis
  • Radiculopathy (Not Due to Disc Displacement)
  • Resection or Ablation of Bone Tumor, Partial or Complete Resection of Bone, Debridement of Bone
  • Reverse Total Shoulder and Total Shoulder Replacement
  • Rib Fracture
  • Rotator Cuff Surgery
  • Rotator Cuff Tear
  • Runner's Knee
  • Scapular Fracture
  • Sciatica (Not Due to Disc Displacement)
  • Scoliosis
  • Separated Femoral Epiphysis Treatment
  • Shoulder Dislocation
  • Shoulder Dislocation Treatment
  • Shoulder Disorders
  • Shoulder Fracture and Dislocation Treatment
  • Shoulder Fracture Treatment
  • Shoulder Impingement Syndrome
  • Shoulder Reconstruction
  • Shoulder Replacement
  • Shoulder Resurfacing
  • Shoulder Stabilizations
  • Shoulder Surgery
  • Shoulder Tendinitis and Tenosynovitis
  • Simple Fracture Care and Casting
  • Sjögren's Syndrome
  • Spine Deformities
  • Spine Fractures, Traumatic
  • Spondylitis
  • Spondylolisthesis
  • Spondylosis
  • Sprains and Strains (incl. Muscle Tear)
  • Steroid Injection
  • Synovial Biopsy
  • Tibia and Fibula Fractures
  • Trigger Finger
  • Trigger Finger Release
  • Wrist Fracture

About Me

Care Philosophy

Board Certified Orthopedic Surgeon

Specialties

  • Sports Medicine
  • Orthopedic Surgery

Board Certifications

  • Orthopaedic Sports Medicine
  • Orthopedic Surgery
  • Sports Medicine

Education

1989
The Southern California Orthopedic Institute
Fellowship Hospital
1988
University Of Southern California
Residency Hospital
1984
University Of Southern California
Internship Hospital
1983
Northwestern University The Feinberg School Of Medicine
Medical School
1978
University Of California At Los Angeles
Undergraduate School
1989
1988
1984
1983
1978

Languages

  • Spanish
  • English

Awards

Memberships & Affiliations

  • California Orthopaedic Association, Member

Dr. Diefendorf's Reviews

Likelihood to recommend Dr. Diefendorf

4.5

Based on 26 reviews

5 Stars
80.76923076923077%
(21)
4 Stars
7.6923076923076925%
(2)
3 Stars
0%
(0)
2 Stars
0%
(0)
1 Star
11.538461538461538%
(3)

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Average Wait Time
  • 10 – 15 minutes
Dr. Diefendorf's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
What People Say About Dr. Dirk Diefendorf, MD
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I’m extremely satisfied with Dr. Diefendorf, I would recommend him to anyone. He’s replaced both of my knees(not at the same time). At first I thought he was being hard on me about my PT, I was wrong I did what he told me to do of course it was painful. Now I have full range of motion in both knees. My 1st surgery at 58 my second at 64. He also did a shoulder re-section years ago. I’ve found him to be a perfectionist & conservative in his approach.
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I rarely write reviews, I hope there's something called Negative rating. So far this is my worst hospital experience till date. I had to pay $35 as a copay, which they never collected at the visit, They didn't send a single mail nor called me in this regard. Now after an year i see than in my credit report as a collection. Simply Woow.
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When I injured myself again I knew I was going to go back to Dr. Diefendorf and I had to change primary Drs. to do so. I had micro fracture surgery on my right knee along with the allograft procedure and cleaning up the meniscus. It is 6 months since the surgery and I feel great, walking normal and riding pain free. I was referred to Dr Diefendorf and have referred two friends to him with good results. If you need help getting back on track do not hesitate to contact Dr Diefendorf's office.
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I suffered a fracture of my wrist on July 29th 2016. It was surgically repaired on Aug 5th and then a cast for 3 weeks. I can not say enough good things about this doctor. He is a excellent surgeon. Everything went perfectly because of his skill. He has excellent bedside manner and kept me informed on my progress at all times. I was back to work in 8 weeks Thank you so much Dr. Diefendorf
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I had a total shoulder replacement last year. Completely satisfied with his personal care and communication. He is an excellent surgeon and would highly recommend him. ??M. Wolf
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I had a severe shoulder injury earlier this year. Dr Diefendorf did a rotator cuff repair which feels better every day. I would be happy to recommend him for his experience and expertise.
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I had a broken ankle (5 months ago) which required surgery (plate & screws) and I felt I was in very good hands with Dr. D throughout the entire process. He explains thoroughly and answers questions completely. His manner is calm, supportive, compassionate and comforting. He has me back on both feet and I should be able to resume to all my normal activities soon. I recommend him highly.
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I went to Dr. D after learning that I had a partial tear to my left ACL. He and his staff made every effort to get me back to living the active lifestyle I am accustomed to living. Through his attention to detail at each appointment, every other month post-op, I was able to slowly build up the strength in my left knee. After 9 months of rigorous physical therapy and supporting strength building exercises, I have been cleared to do whichever outdoor activity I desire!
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I came to visit a friend in Burlingame from where I live in Sacramento. During my visit I broke my right femur and was transported (in great pain) to the nearby hospital. My surgery was scheduled for the next day but Dr. Diefendorf stepped up at the end of a very busy day and did my surgery that night. I found great comfort from Dr. Diefendorf's care. He is intelligent, competent, compassionate, and willing to listen patiently to what you have to say. I highly recommend Dr. Diefendorf!
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I had total knee replacements done by Dr. Diefendorf, the right knee 3/11/15 and left 1/4/16. In both cases the procedure was clearly explained to me ahead of time and the procedures went very well. I was home after 2 nights in the hospital each time. The followup care at home, therapy, was excellent. My recovery has gone quite well and I'm very pleased with the results of the surgeries Dr. Deifendorf performed to correct knee problems that have been with me for about 48 years.
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Locations

Insurance accepted

Accepted insurance can change. Please double-check when making an appointment.

Aetna
Aetna HMO
Choice Plus POS II
Blue Cross Blue Shield
Blue Card PPO
Blue Cross Blue Shield of California
Advantage Preferred DirectAccess Plus PPO
Blue Cross Blue Shield of California PPO
Select Plus HMO
Select PPO
Blue Shield of California
Access Plus Savenet
Blue Shield of California PPO
Enhanced Exclusive for Small Business HMO
Local Access Plus HMO
Cigna
Cigna HMO
Cigna PPO
Great West Healthcare-Cigna PPO
Open Access Plus
Commercial Insurance Company
First Health (Coventry Health Care)
First Health (Coventry Health Care) PPO
Health Net
Employer Group HMO
WholeCare Network HMO
Humana
MultiPlan
Kaiser PHCS Network PPO
MultiPlan PPO
PHCS Network PPO
Premera Blue Cross
Heritage Signature
UnitedHealthCare
Choice Plus POS
Navigate HMO
Navigate POS
Options PPO
United Healthcare