Dr. Dirk R. Diefendorf
- Gender: Male
- Experience: 38 years
- Graduated from: Northwestern University Feinberg Medical School
- Graduation year: 1983
- Sole propriator: Yes
- NPI: 1467559443
Dr. Dirk R. Diefendorf M.D.
Neuromusculoskeletal Medicine Specialist
He is located at 101 South Ellsworth Avenue Suite 607 in San Mateo, CA 94401. Can help patients with the following: Carpal Tunnel Syndrome, Compartment Syndrome, Dislocated Shoulder, Frostbite, Sciatica, Spinal Stenosis. His National Provider Identifier (NPI) number is 1467559443. Appointment can be made via the phone number (650) 347-0157. He is affiliated with 1 hospitals.
Conditions treated
Dr. Dirk Ross Diefendorf, being an neuromusculoskeletal medicine specialist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Dirk R. Diefendorf.
- ACL Tear
- Achilles Tendon Rupture
- Arthritis
- Asthma
- Avascular Necrosis
- Back Pain
- Baker's Cyst
- Bone Spurs
- Broken Bone
- Bunions
- Bursitis
- Carpal Tunnel Syndrome
- Cauda Equina Syndrome
- Cerebral Palsy (CP)
- Cervical Radiculopathy
- Compartment Syndrome
- Cubital Tunnel Syndrome
- Degenerative Disc Disease (DDD)
- Dislocated Ankle
- Dislocated Shoulder
- Elbow Pain
- Fibromyalgia
- Frostbite
- Gastroesophageal Reflux Disease (GERD)
- Hammer Toe
- Herniated Disc
- Hip Replacement
- Iliotibial Band Syndrome (ITBS)
- Impingement Syndrome
- Inflammatory Bowel Disease (IBD)
- Ingrown Toenail
- Irritable Bowel Syndrome (IBS)
- Joint Fluid Extraction
- Knee Pain
- Knee Replacement
- Kyphoplasty
- Kyphosis
- Low Back Pain
- Lumbar Spinal Stenosis
- Lung Cancer
- Meniscus Tear
- Metatarsal Surgery
- Migraine
- Morton's Neuroma
- Multiple Sclerosis (MS)
- Myofascial Pain Syndrome (MPS)
- Osgood-Schlatter Disease
- Osteoarthritis (OA)
- Osteomyelitis
- Osteoporosis
- Patellofemoral Pain Syndrome (PFS)
- Plantar Fasciitis
- Pneumonia
- Repetitive Motion Disorders (RMDs)
- Rheumatoid Arthritis (RA)
- Rotator Cuff Tear
- Sciatica
- Scoliosis
- Separated Shoulder
- Spinal Stenosis
- Spondylolisthesis
- Spondylolysis
- Spondylosis
- Sprained Ankle
- Sprained Wrist
- Strep Throat
- Stress Fracture
- Tennis Elbow
- Trigger Finger
- Urinary Tract Infection (UTI)
- Whiplash
- Wrist Surgery
Procedures Performed by Dr. Dirk R. Diefendorf
Medicare Enrollment
Dr. Dirk R. Diefendorf is enrolled to bill Medicare as a Practitioner - Orthopedic Surgery .
Medicare practice location(s) (city/state/zip only, as reported to Medicare):
- SAN MATEO, CA, 94401-3843
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| Stryker | $42 |
| Medtronic | $36 |
| Tornier | $28 |
Other
| Food and Beverage | $143 |
Studies
NORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated in 1983Additional Specialities
- Orthopedic Surgeon
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Questions & Answers
Where can you meet with Dr. Dirk Ross Diefendorf?
Dr. Dirk Ross Diefendorf's office is located at 101 South Ellsworth Avenue Suite 607 in San Mateo, CA 94401.
What conditions does Dr. Dirk Ross Diefendorf treat?
Dr. Dirk Ross Diefendorf provides treatment for Carpal Tunnel Syndrome, Compartment Syndrome, Dislocated Shoulder, Frostbite, Sciatica, Spinal Stenosis. For the full list see this list.
Has Dr. Dirk Ross Diefendorf affiliation with hospitals?
Dr. Dirk Ross Diefendorf is affiliated with PENINSULA MEDICAL CENTER.