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Dr. Dirk Diefendorf, MD

Sports Medicine*
4.2 (32)
Map Pin Small San Mateo, CA
Accepting new patients
41 years of experience

Overview of Dr. Dirk Diefendorf, MD

Dr. Dirk Diefendorf, MD is a Sports Medicine Specialist in San Mateo, CA. They specialize in Sports Medicine, has 41 years of experience, and is board certified in Orthopaedic Sports Medicine. They graduated from Northwestern University Feinberg School of Medicine and is affiliated with Mills-Peninsula Medical Center. Dr. Diefendorf, completed a residency at University of Southern California. Patients rated Dr. Diefendorf an average 4.2 star rating.

Dr. Diefendorf works at Practice in San Mateo, CA. They are accepting new patients and accept Aetna, Anthem and Blue Cross Blue Shield as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

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Dr. Diefendorf's Office Locations

  1. 1
    Comprehensive Foot and Ankle Care Inc.
    101 S San Mateo Dr Ste 212, San Mateo, CA 94401 Icon Directions Right Arrow Directions Phone Icon (650) 347-0517

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • Mills-Peninsula Medical Center

Experience & Treatment Frequency

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What is treatment frequency?

Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

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HighFrequency
NormalFrequency
May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Meniscus Tear
Hip Fracture
Femur Fracture
Meniscus Tear
Hip Fracture
Femur Fracture

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Meniscus Tear
Hip Fracture
Femur Fracture
Hip Tendinitis
Lumbar Compression Fracture
Lumbar Radiculopathy
Lumbar Spine Fracture
Miner's Knee
Patellar Fracture
Rotator Cuff Tendinosis
Wrist Fracture
Knee Replacement
Total Knee Arthroplasty with Robotic Assist
Achilles Tendinitis
Adhesive Capsulitis Shoulder
Ankle and Foot Instability or Derangement
Ankle Fracture
Ankle Sprain and Achilles Tendon Sprain or Rupture
Ankle Sprains and Strains
Ankylosing Spondylitis
Anterior Cruciate Ligament (ACL) or Posterior Cruciate Ligament (PCL) Tear
Arthritis of the Elbow
Ataxia
  • View other providers who treat Ataxia
Avascular Necrosis
Baker’s Cyst
Bone Cancer
Bone Disorders
Brachial Plexus Palsy
Broken Arm
Broken Neck
Bursitis
  • View other providers who treat Bursitis
Carpal Tunnel Syndrome
Cerebrospinal Fluid Leak (CSF Leak)
Cervical Spine Myelopathy
Chondrocalcinosis
Chondromalacia
Chronic Neck Pain
Clavicle Fracture
Coccygeal Pain
Complex Regional Pain Syndrome (CRPS)
Complications of Joint Prosthesis
De Quervain's Disease
Difficulty With Walking
Elbow Bursitis
Elbow Injuries
Elbow Sprain
Enthesopathy of Hip (incl. Trochanteric Bursitis)
Enthesopathy of Knee (incl. Bursitis of Knee)
Femoral Neck Fracture
Fibular Fracture
Foot Conditions
Foot Fracture
Foot Sprain
Fracture
  • View other providers who treat Fracture
Fracture of Hand and Fingers
Gait Abnormality
Ganglion Cyst
Glenoid Labrum Tear
Gout
  • View other providers who treat Gout
Hand Conditions
Hand Fracture
Heel Spur
Herniated Disc
Hip Pointer
Hip Sprain
Humerus Fracture
Internal Derangement of Knee
Joint Pain
Knee Dislocation
Knee Disorders
Knee Fracture
Knee Sprain
Lateral and Medial Epicondylitis (Tennis and Golf Elbow)
Lateral Collateral Ligament (LCL) Sprain
Lateral Epicondylitis
Leg Fracture Above Knee (incl. Hip)
Leg Fracture Below Knee (incl. Ankle)
Limb Pain
Low Back Pain
Medial Collateral Ligament (MCL) Sprain
Myelopathy
Neck Strain (incl. Whiplash Injury)
Nerve Root Injury and Plexus Disorders (incl. Pinched Nerve)
Non-Unions and Malunions of Fractures
Osgood Schlatter Disease
Osteoarthritis
Osteoarthritis of Foot
Osteoarthritis of Hand
Osteoarthritis of Hand or Wrist
Osteoarthritis of Hip
Osteoarthritis of Hip and Thigh
Osteoarthritis of Knee
Osteoarthritis of Shoulder
Osteoarthritis of Spine
Osteochondritis Dissecans
Osteosarcoma
Patellar Chondromalacia
Patellofemoral Pain Syndrome (PFPS)
Pelvic Fracture
Peripheral Nerve Disorders
Piriformis Syndrome
Plantar Fasciitis
Pyogenic Arthritis
Radiculopathy
Rib Fracture
Rotator Cuff Tear
Runner's Knee
Sacrum Disorders
Scapular Fracture
Sciatica (Not Due to Disc Displacement)
Scoliosis
Shoulder Dislocation
Shoulder Disorders
Shoulder Impingement Syndrome
Shoulder Tendinitis and Tenosynovitis
Spine Deformities
Spine Fractures, Traumatic
Spondylitis
Spondylolisthesis
Sprains and Strains (incl. Muscle Tear)
Stress Fracture of Foot
Tenosynovitis
Thoracic Spine Fracture
Tibia and Fibula Fractures
Tibial Fracture
Trigger Finger
Wrist Sprain or Strain
Achilles Tendon Rupture Repair
ACL Surgery
All Shoulder or Elbow Replacement Procedures
Ankle Arthroscopy
Ankle Fracture Repair
Arm Surgery
Arthritic Shoulder Reconstruction
Arthroscopic Shoulder Reconstruction
Arthroscopic Shoulder Repair
Arthroscopic Shoulder Surgery
De Quervain's Release
Elbow Fracture and Dislocation Treatment
Elbow Replacement
Excision of Femur or Knee
Excision of Tibia or Fibula
Foot and Ankle Fracture and Dislocation Treatment
Foot and Ankle Ligament and Tendon Repair
Fracture and-or Dislocation Treatment
Fracture Care
Fracture Open Reduction and Internal Fixation (ORIF)
Glenoid Labrum Repair
Hand and Wrist Fracture and Dislocation Treatment
Hand and Wrist Fracture Treatment, Open
Hip Dislocation
Hip Replacement
Hip Replacement with Robotic Assist
Joint Drainage
Knee and Leg Fracture and Dislocation Treatment
Knee Arthroscopy
Knee Replacement Revision
Knee Surgery
Meniscus Surgery
Musculoskeletal Function Test
Myofascial Trigger Point Injection
Partial Hip Replacement
Reverse Total Shoulder and Total Shoulder Replacement
Rotator Cuff Surgery
Separated Femoral Epiphysis Treatment
Shoulder Arthroscopy
Shoulder Dislocation Treatment
Shoulder Fracture and Dislocation Treatment
Shoulder Fracture Treatment
Shoulder Reconstruction
Shoulder Replacement
Shoulder Resurfacing
Shoulder Stabilizations
Shoulder Surgery
Simple Fracture Care and Casting
Steroid Injection
Synovial Biopsy
Total Hip Replacement
Trigger Finger Release
Trigger Point Injection
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    • Aetna
    • Anthem
    • Blue Cross Blue Shield
    • Blue Cross Blue Shield of California
    • Blue Shield of California
    • CareFirst Blue Cross Blue Shield
    • Cigna
    • Commercial Insurance Company
    • First Health
    • Health Net
    • Humana
    • MultiPlan
    • Premera Blue Cross
    • UnitedHealthCare

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

    Learn more about how FindCare's ratings and reviews work

    4.2
    Average provider rating
    Based on 32 ratings
    Patient Ratings (32)
    5 Star
    (24)
    4 Star
    (2)
    3 Star
    (0)
    2 Star
    (0)
    1 Star
    (6)
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    Dr. Diefendorf's Office & Staff

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    • How well provider listens and answers questions
    • Hpends appropriate amount of time with patients

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    About Dr. Dirk Diefendorf, MD

    Specialties*
    • Sports Medicine

    • *Healthline does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
    Specialties*
    Years of Experience
    • 41 years of experience
    Years of Experience
    Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.
    Languages Spoken
    • English, Spanish
    Languages Spoken
    NPI Number
    • 1467559443
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Fellowship
    • The Southern California Orthopedic Institute
    Fellowship
    Residency
    • University of Southern California
    Residency
    Medical Education
    • Northwestern University Feinberg School of Medicine
    Medical Education
    Undergraduate School
    • UCLA
    Undergraduate School
    Board Certifications
    • Orthopaedic Sports Medicine and Orthopedic Surgery
    Board Certifications
    What’s a board certification and why is it important that my provider has one?

    A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

    Frequently Asked Questions

    Dr. Dirk Diefendorf, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. Diefendorf is offering online scheduling or call the provider’s office for more information.

    Dr. Diefendorf has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    Dr. Diefendorf works at Practice in San Mateo, CA. View the full address on Dr. Diefendorf’s profile.

    32 patients have reviewed Dr. Diefendorf. The overall rating for this provider is 4.2. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Diefendorf.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. Diefendorf, there are benefits to both methods. A person calling to schedule an with Dr. Diefendorf appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

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