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Dr. Dirk Diefendorf, MD

Dr. Dirk Diefendorf, MD

San Mateo, CA

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 with 1 additional practice location. He has been practicing for over 36 years and is board certified by the American Board of Orthopaedic Surgery. 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, Kaiser Permanente, 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) 347-0517.

    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 in 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:

    • Osteoarthritis of both knees
    • Osteoarthritis of the left knee
    • Primary Osteoarthritis in Right Knee
    • Primary Osteoarthritis in Both Hips
    • Osteoarthritis of the knee
    • Osteoarthritis
    • Degenerative joint disease
    • Wear-and-tear arthritis
    • Arthrosis
    • Joint degeneration
    • Right Knee Arthritis
    • Right Knee Degenerative Joint Disease
    • Bilateral Hip Arthritis
    • Primary Degenerative Hip Disease
    • Both Hips Arthritis

    ICD-10 Codes:

    • M170: Bilateral primary osteoarthritis of knee
    • M1712: Unilateral primary osteoarthritis, left knee
    • M1711: Unilateral primary osteoarthritis, right knee
    • M160: Bilateral primary osteoarthritis of hip
    • M1710: Unilateral primary osteoarthritis, unspecified knee

    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:

    • 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 Knee Joint Problems
    • Left Knee Joint Problems
    • Knee Injuries and Disorder
    • Internal derangement of right knee
    • Right knee joint dysfunction
    • Right knee mechanical issues
    • Internal derangement of left knee
    • Left knee joint dysfunction
    • Left knee mechanical issues

    ICD-10 Codes:

    • M238X1: Other internal derangements of right knee
    • M238X2: Other internal derangements of left knee

    Also known as:

    • Shoulder Impingement Syndrome
    • Rotator Cuff Injuries
    • Swimmer's Shoulder
    • Impingement Syndrome
    • Rotator Cuff Impingement

    ICD-10 Codes:

    • M7541: Impingement syndrome of right shoulder
    • M7542: Impingement syndrome of left shoulder

    Also known as:

    • Right Hip Pain
    • Left Hip Pain
    • Hip Injuries and Disorder
    • Pain
    • Sore Right Hip
    • Right Hip Ache
    • Right Hip Discomfort
    • Sore Left Hip
    • Left Hip Ache
    • Left Hip Discomfort

    ICD-10 Codes:

    • M25551: Pain in right hip
    • M25552: Pain in left hip

    Also known as:

    • Shoulder Lesion
    • Left Frozen Shoulder
    • Shoulder Injuries and Disorder
    • Shoulder Injury
    • Shoulder Problem
    • Shoulder Damage
    • Left adhesive capsulitis
    • Left shoulder stiffness
    • Left shoulder periarthritis

    ICD-10 Codes:

    • M7581: Other shoulder lesions, right shoulder
    • M7502: Adhesive capsulitis of left shoulder

    Also known as:

    • Low Back Pain
    • Back Pain
    • Lumbago
    • Lower Back Ache
    • Backache

    ICD-10 Codes:

    • M5450: Low back pain, unspecified

    Also known as:

    • Other Chronic Pain Condition
    • Chronic Pain
    • Various chronic pain
    • Unspecified long-term pain
    • Persistent pain disorders

    ICD-10 Codes:

    • G8929: Other chronic pain

    Also known as:

    • Frozen Shoulder
    • Shoulder Injuries and Disorder
    • Adhesive Capsulitis
    • Shoulder Stiffness
    • Stiff Shoulder Syndrome

    ICD-10 Codes:

    • M7501: Adhesive capsulitis of right shoulder

    Which procedures does Dr. Diefendorf perform as a Neuromusculoskeletal Sports Medicine Specialist?

    Does Dr. Diefendorf accept my insurance?

    Dr. Diefendorf accepts most major insurance plans. Important: Please call our office at (650) 347-0517 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

    • BCBS Unspecified

    • Blue Shield of California

    • Centene

    • Cigna

    • CVS Health (formerly Aetna)

    • Elevance Health Inc. (formerly Anthem)

    • Medicare

    • Sutter Health

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Diefendorf's office located?

    Dr. Dirk Diefendorf's Primary Practice

    101 S San Mateo Dr Ste 212

    San Mateo, CA 94401

    (650) 347-0517

    Get Directions

    Dr. Dirk Diefendorf's Practice 2

    101 S Ellsworth Ave Ste 607

    San Mateo, CA 94401

    (650) 347-0157

    Get Directions

    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) 347-0517 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) 347-0517 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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