36 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Diefendorf, Neuromusculoskeletal Sports Medicine Specialist in San Mateo, CA?
Dr. Dirk Diefendorf, MD is a Neuromusculoskeletal Sports Medicine Specialist, who primarily practices in San Mateo, CA. He has been practicing for over 36 years and is board certified. Dr. Diefendorf completed his residency at L A Co-Usc Med Ctr, Orthopedic Surgery; L A Co-Usc Med Ctr, General Surgery. Dr. Diefendorf is fluent in English and Spanish, and is currently seeing new patients. Dr. Diefendorf’s practice accepts Cigna, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Diefendorf’s office at (650) 347-0157.
Where did Dr. Diefendorf go to medical school and complete their residency?
Residency: L A Co-Usc Med Ctr, Orthopedic Surgery; L A Co-Usc Med Ctr, General Surgery
Medical School: Northwestern Uniiversity
Is Dr. Diefendorf board certified as a Neuromusculoskeletal Sports Medicine Specialist?
Yes, Dr. Dirk Diefendorf, MD is board certified by the American Board of Orthopaedic Surgery
What languages does Dr. Diefendorf speak?
Dr. Diefendorf and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Diefendorf treat?
As a Neuromusculoskeletal Sports Medicine Specialist, Dr. Diefendorf diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Diefendorf. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Pain in Right Knee
- Pain in Left Knee
- Knee Injuries and Disorder
- Pain
- Right Knee Ache
- Right Knee Discomfort
- Sore Right Knee
- Left Knee Ache
- Left Knee Discomfort
- Sore Left Knee
ICD-10 Codes:
- M25561: Pain in right knee
- M25562: Pain in left knee
Also known as:
- Osteoarthritis of both knees
- Primary Osteoarthritis in Right Knee
- Osteoarthritis
- Degenerative joint disease
- Wear-and-tear arthritis
- Arthrosis
- Joint degeneration
- Right Knee Arthritis
- Right Knee Degenerative Joint Disease
ICD-10 Codes:
- M170: Bilateral primary osteoarthritis of knee
- M1711: Unilateral primary osteoarthritis, right knee
Also known as:
- Right Shoulder Pain
- Left Shoulder Pain
- Pain
- Shoulder Injuries and Disorder
- Sore Right Shoulder
- Right Shoulder Ache
- Right Shoulder Discomfort
- Sore Left Shoulder
- Left Shoulder Ache
- Left Shoulder Discomfort
ICD-10 Codes:
- M25511: Pain in right shoulder
- M25512: Pain in left shoulder
Also known as:
- Right Hip Pain
- Hip Injuries and Disorder
- Pain
- Sore Right Hip
- Right Hip Ache
- Right Hip Discomfort
ICD-10 Codes:
- M25551: Pain in right hip
What procedures does Dr. Diefendorf perform?
As a Neuromusculoskeletal Sports Medicine Specialist, Dr. Diefendorf performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Diefendorf. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Knee Arthroscopy with Meniscus and Cartilage Repair
- Knee Cartilage Repair (Arthroscopic)
- Endoscopy
- Knee Scope with Meniscectomy
- Knee Cartilage Shaving
- Arthroscopic Knee Debridement
- Knee abrasion arthroplasty
- Knee microfracture surgery
- Knee chondroplasty
- Knee scope with meniscectomy
- Arthroscopic knee surgery
- Cartilage shaving knee
- Meniscus repair knee arthroscopy
CPT Codes:
- 29881: Arthroscopy, knee, surgical; with meniscectomy (medial OR lateral, including any meniscal shaving) including debridement/shaving of articular cartilage (chondroplasty), same or separate compartment(s), when performed
- 29879: Arthroscopy, knee, surgical; abrasion arthroplasty (includes chondroplasty where necessary) or multiple drilling or microfracture
- 29880: Arthroscopy, knee, surgical; with meniscectomy (medial AND lateral, including any meniscal shaving) including debridement/shaving of articular cartilage (chondroplasty), same or separate compartment(s), when performed
Also known as:
- Shoulder Arthroscopy for Decompression
- Arthroscopic Rotator Cuff Repair
- Open Rotator Cuff Repair (Chronic Tear)
- Endoscopy
- Arthroscopic Shoulder Decompression
- Subacromial Decompression
- Shoulder Impingement Surgery
- Acromioplasty
- Shoulder Arthroscopy for Rotator Cuff
- Keyhole Rotator Cuff Surgery
- Minimally Invasive Shoulder Repair
- Shoulder Tendon Repair
- Chronic Rotator Cuff Surgery
- Open Musculotendinous Cuff Repair
CPT Codes:
- 29826: Arthroscopy, shoulder, surgical; decompression of subacromial space with partial acromioplasty, with coracoacromial ligament (ie, arch) release, when performed (List separately in addition to code for primary procedure)
- 29827: Arthroscopy, shoulder, surgical; with rotator cuff repair
- 23412: Repair of ruptured musculotendinous cuff (eg, rotator cuff) open; chronic
Also known as:
- ACL Repair Surgery
- Knee Arthroscopy with Joint Lining Removal
- Endoscopy
- Anterior Cruciate Ligament Reconstruction
- Arthroscopic ACL Surgery
- Knee Ligament Repair
- ACL Augmentation
- Knee Synovectomy
- Arthroscopic Knee Surgery
- Plica Resection
CPT Codes:
- 29888: Arthroscopically aided anterior cruciate ligament repair/augmentation or reconstruction
- 29875: Arthroscopy, knee, surgical; synovectomy, limited (eg, plica or shelf resection) (separate procedure)
Also known as:
- Extensive Shoulder Arthroscopy Debridement
- Shoulder Bone Shaving (Arthroscopic)
- Endoscopy
- Shoulder Scope Cleaning
- Arthroscopic Shoulder Debridement
- Shoulder Joint Cleanup Surgery
- Arthroscopic Distal Claviculectomy
- Mumford Procedure (Arthroscopic)
- AC Joint Resection (Arthroscopic)
CPT Codes:
- 29823: Arthroscopy, shoulder, surgical; debridement, extensive, 3 or more discrete structures (eg, humeral bone, humeral articular cartilage, glenoid bone, glenoid articular cartilage, biceps tendon, biceps anchor complex, labrum, articular capsule, articular side of the rotator cuff, bursal side of the rotator cuff, subacromial bursa, foreign body[ies])
- 29824: Arthroscopy, shoulder, surgical; distal claviculectomy including distal articular surface (Mumford procedure)
Also known as:
- Short Arm Cast Application
- External Fixation System Placement (Uniplane)
- Elbow to Finger Cast
- Forearm Cast
- Arm Immobilization Cast
- Uniplane External Fixator
- Bone External Fixation
- External Frame for Bone Healing
CPT Codes:
- 29075: Application, cast; elbow to finger (short arm)
- 20690: Application of a uniplane (pins or wires in 1 plane), unilateral, external fixation system
Also known as:
- Joint or Bursa Injection/Fluid Removal
- Arthrocentesis
- Major Joint Aspiration
- Bursa Injection
- Joint Fluid Removal
CPT Codes:
- 20610: Arthrocentesis, aspiration and/or injection, major joint or bursa (eg, shoulder, hip, knee, subacromial bursa); without ultrasound guidance
Also known as:
- Shoulder Arthrography Injection
- Diagnostic Imaging
- Shoulder MRI Injection
- Shoulder CT Injection
- Joint Injection for Imaging
- Contrast Injection for Shoulder Scan
CPT Codes:
- 23350: Injection procedure for shoulder arthrography or enhanced CT/MRI shoulder arthrography
Does Dr. Diefendorf accept my insurance?
Dr. Diefendorf accepts most major insurance plans. Important: Please call our office at (650) 347-0157 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Diefendorf accept in San Mateo, CA?
Dr. Diefendorf in San Mateo, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Alignment Health Plan
Alliant Health Plans
Blue Shield of California
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Medicare
Presbyterian Health Plan
State of Tennessee
Sutter Health
UnitedHealthcare
View All Insurances
Where is Dr. Diefendorf's office located?
Dr. Dirk Diefendorf's Primary Practice
101 S Ellsworth Ave Ste 607
San Mateo, CA 94401
(650) 347-0157
What is Dr. Diefendorf's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Diefendorf's National Provider Identifier (NPI) number is 1467559443.
What common questions do patients ask about Dr. Diefendorf?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Diefendorf
What is Dr. Dirk Diefendorf's specialty?
Dr. Diefendorf is a Neuromusculoskeletal Sports Medicine Specialist near San Mateo, CA. A Neuromusculoskeletal Sports Medicine Specialist is a physician who focuses on the diagnosis, treatment, and prevention of sports-related injuries and conditions affecting the nervous, muscular, and skeletal systems. These specialists use a comprehensive approach to care, which may include physical therapy, osteopathic manipulative treatment, regenerative medicine, and other non-surgical interventions to optimize performance, promote recovery, and improve function in athletes and active individuals. They address a wide range of issues, from acute injuries to chronic overuse conditions, tailoring care to the specific needs of each patient. Contact Dr. Diefendorf to book an appointment today.
Is this Dr. Dirk Diefendorf affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Diefendorf is affiliated with Mills-Peninsula Medical Center, Mills-Peninsula Medical Center which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Neuromusculoskeletal Sports Medicine Specialist?
Explore Neuromusculoskeletal Sports Medicine Specialist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Dirk Diefendorf accepting new patients in San Mateo, CA?
Yes, Dr. Dirk Diefendorf is accepting new patients at this time.
Does Dr. Dirk Diefendorf offer online booking?
Please contact Dr. Diefendorf's office at (650) 347-0157 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Dirk Diefendorf?
Please contact Dr. Diefendorf's office at (650) 347-0157 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Dirk Diefendorf have?
Dr. Dirk Diefendorf is certified by the American Board of Orthopaedic Surgery.
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