Summary

Dr. Dirk Diefendorf is an orthopedic surgeon with additional expertise in physical medicine and rehabilitation. He earned his medical degree from Northwestern University Feinberg School of Medicine and completed his residency at LAC USC Medical Center. With over four decades of experience in practice, Dr. Diefendorf brings extensive knowledge to treating musculoskeletal conditions. He is fluent in both Spanish and English.

Dr. Diefendorf is affiliated with Sequoia Hospital and practices at multiple locations throughout the San Francisco Bay Area, including Palo Alto, Burlingame, and San Mateo. His clinical focus includes treating joint pain, arthritis, and rotator cuff injuries. He utilizes various treatment approaches such as physical therapy, diagnostic imaging, and strength training programs. Patients have given him an average rating of 4.2 out of 5 stars.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.2
  • 43 years of experience
  • 33 insurance plans accepted
  • speaks Spanish, English
  • Lac Usc Medical Center
  • 8 written reviews
  • 3 specialties
  • 4 areas of expertise
  • 1 hospital affiliation
  • 7 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Dirk Ross Diefendorf has 7 locations

Waverley Surgery Center

400 Forest AvePalo Alto, CA 94301
Mon7:00 am - 5:00 pm
Tue7:00 am - 5:00 pm
Wed7:00 am - 5:00 pm
Thu7:00 am - 5:00 pm
Fri7:00 am - 5:00 pm
SatClosed
SunClosed

Mills Peninsula Medical Center

1501 Trousdale DrBurlingame, CA 94010

San Mateo Medical Center

222 W 39th AveSan Mateo, CA 94403

Mills Health Center

100 S San Mateo DrSan Mateo, CA 94401

Stanford Health Care

500 Pasteur DrPalo Alto, CA 94304

Stanford Hospital

300 Pasteur DrPalo Alto, CA 94304

Stanford Medicine Pediatrics

453 Quarry Rd # Mc5660Palo Alto, CA 94304

Compare with Similar Doctors

Dr. Dirk Ross Diefendorf, MD
Julius Bishop, MD
Marc R. Safran, MD
Amy Ladd, MD
Dr. Dirk Ross Diefendorf, MDJulius Bishop, MDMarc R. Safran, MDAmy Ladd, MD
Orthopedic SurgeryOrthopedic SurgeryOrthopedic SurgeryOrthopedic Surgery
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.2 
4.6 
3.3 
3.9 
43 Years of Experience 22 Years of Experience 39 Years of Experience 42 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks Spanish, English Speaks Spanish, English Speaks English, Spanish Speaks Spanish, English
Palo Alto , CARedwood City , CARedwood City , CARedwood City , CA
Med School: Northwestern University Feinberg School Of Medicine Med School: Harvard Medical School Med School: Duke University School Of Medicine Med School: Suny Upstate Medical University Alan And Marlene Norton Coll Of Med
Current Profile
View Profile View Profile View Profile

Insurance Plans Accepted by Dr. Dirk Ross Diefendorf

  • Accepts Medicaid
  • AARP
  • Aetna
  • Aetna - HMO
  • Alignment Health Plan
  • AltaMed Senior BuenaCare (PACE)
  • Anthem Blue Cross
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Illinois
  • Blue Cross Blue Shield of Oklahoma
  • BLUE CROSS of CALIFORNIA
  • Blue Shield of California
  • Cigna
  • Contra Costa Health Plan
  • Health Net
  • Health Net - HMO
  • Health Plan of San Mateo
  • Health Plan of San Mateo - Medicaid
  • Humana
  • Humana - HMO
  • Kaiser Permanente
  • Magellan Health
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Meritain Health
  • Nippon Life Benefits
  • PreferredOne
  • Santa Clara Family Health Plan
  • Sutter Health Plus
  • United American
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • UnitedHealthcare - Medicare

Medical Specialties

Dr. Dirk Ross Diefendorf has the following 3 specialties

Specialty Expertise

Dr. Dirk Ross Diefendorf has the following 4 areas of expertise

  • Neuromuscular Medicine (pm & Rehab)
  • Other
  • Other Specialty
  • Physical Medicine & Rehabilitation

Certifications, License, & Education

43 Years Experience

Dr. Dirk Ross Diefendorf holds an expired medical license in the state of California.

Medical License

Medical Doctor with an expired medical license in the state of California that expired in 2025.

Education & Training

Residency

Completed their residency at Lac Usc Medical Center.

Medical School

Graduated from Northwestern University Feinberg School Of Medicine in 1983.

NPI Number

Dr. Diefendorf's NPI number is 1467559443.

Similar doctors

Frequently Asked Questions

Which hospitals is Dr. Dirk Diefendorf affiliated with?
Dr. Dirk Diefendorf is affiliated with Sequoia Hospital.
What languages does Dr. Dirk Diefendorf speak?
Dr. Dirk Diefendorf speaks Spanish and English.
How can I make an appointment with Dr. Dirk Diefendorf?
You can find contact information for Dr. Dirk Diefendorf here on Vitals.
Does Dr. Dirk Diefendorf accept virtual/telehealth appointments?
Dr. Dirk Diefendorf has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. Dirk Diefendorf's office located?
Dr. Dirk Diefendorf's office is located at 400 Forest Ave, Palo Alto, CA, 94301.

Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.