Summary

Dr. Mathias Masem is an orthopedic surgeon who has dedicated over five decades to caring for patients with bone, joint, and muscle conditions. He earned his medical degree from the University of Minnesota Medical School and completed his residency training at UCSF and Robert Wood Johnson University Hospital. His extensive fellowship training includes advanced studies at Harvard Medical School, UCSF, and Medizinische Hochschule Hannover in Germany, reflecting his commitment to specialized expertise in orthopedic care. Dr. Masem is board-certified in Orthopaedic Surgery by the American Board of Orthopaedic Surgery and communicates with patients in English.

Dr. Masem practices at the Hand, Elbow & Upper Extremity Surgery Center in San Francisco, California, and maintains hospital privileges at Alameda Hospital. He specializes in treating conditions such as osteoarthritis, hand osteoarthritis, and thumb arthritis, helping patients manage joint pain and mobility challenges. His procedural expertise includes performing extremity X-rays for diagnostic imaging, bursa injections to reduce inflammation, and arthrocentesis to remove fluid from joints. Patients have given him an average rating of 3.9 out of 5 on Vitals.
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Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 3.9
  • 51 years of experience
  • 46 insurance plans accepted
  • speaks English
  • Harvard Medical School
  • 9 written reviews
  • 1 specialty
  • 12 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 1 office location
  • Male

Patients’ Perspective

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

Office Location

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Mathias A. Masem, MD
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Mathias A. Masem, MDBrady Evans, MD, MBAWilliam J. Maloney, MDJay Parkin, MD
Orthopedic SurgeryOrthopedic SurgeryOrthopedic SurgeryOrthopedic Surgery
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
3.9 
3.6 
2.2 
51 Years of Experience 43 Years of Experience 38 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks English, Spanish Speaks Spanish, English
San Francisco , CARedwood City , CARedwood City , CAFairfield , CA
Med School: University of Minnesota Medical School Med School: Columbia University College Of Physicians & Surgeons Med School: Stanford University School Of Medicine
Current Profile
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Insurance Plans Accepted by Mathias A. Masem

  • AARP
  • Aetna
  • Aetna - HMO
  • AIG
  • Alameda Alliance for Health
  • Alignment Health Plan
  • Alignment Health Plan - HMO
  • AltaMed Senior BuenaCare (PACE)
  • Anthem Blue Cross
  • Blue Cross Blue Shield of Illinois
  • Blue Cross Blue Shield of Oklahoma
  • BLUE CROSS of CALIFORNIA
  • BLUE CROSS of CALIFORNIA - HMO
  • Blue Shield of California
  • Blue Shield of California - HMO
  • CalOptima
  • Central California Alliance for Health
  • Central California Alliance for Health - Medicaid (Managed)
  • CHAMPVA
  • CHAMPVA - HMO
  • Cigna
  • Consolidated Health Plans - PPO
  • Contra Costa Health Plan
  • Corvel - Workers’ Compensation
  • Health Net
  • Health Net - HMO
  • Health Plan of San Joaquin
  • Health Plan of San Joaquin - Medicaid (Managed)
  • Humana
  • Imperial Health Plan of California
  • Integra
  • Kaiser Permanente
  • Kaiser Permanente - HMO
  • Magellan Health
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Meritain Health
  • SCAN Health Plan
  • SCAN Health Plan - HMO
  • STLDentalPlan| LLC
  • Sutter Health Plus
  • Tricare
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • UnitedHealthcare - Medicare

Medical Specialties

Mathias A. Masem has the following specialty

Specialty Expertise

Mathias A. Masem has the following 12 areas of expertise

  • ACL Reconstruction or Anterior Cruciate Ligament Reconstruction (Bone-Patellar Tendon-Bone Graft)
  • Bone marrow inflammation (Osteomyelitis)
  • Hip Osteoarthritis
  • Hip Surgery (Hip Replacement Arthroplasty)
  • Knee Osteoarthritis
  • Knee Surgery (Knee Replacement Arthroplasty)
  • Kyphosis
  • Osteoarthritis (Hand and Wrist)
  • Scoliosis
  • Spinal Disorders
  • Spondylolisthesis
  • Sports Injuries

Certifications, License, & Education

51 Years Experience

Mathias A. Masem holds an active medical license in the state of California. They are board certified in Orthopaedic Surgery by the American Board of Orthopaedic Surgery.

Board Certifications

Board certified in Orthopaedic Surgery by the American Board of Orthopaedic Surgery.

Medical License

Medical Doctor with an active medical license in the state of California that expires in 2026.

Education & Training

Fellowship

Completed their fellowship at Harvard Medical School in 1987, Medizinische Hochschule Hannover in 1986, and UCSF in 1983.

Residency

Completed their residency at Robert Wood Johnson University Hospital in 1980, UCSF in 1978, and UCSF in 1976.

Medical School

Graduated from University of Minnesota Medical School in 1975.

NPI Number

Mathias A. Masem's NPI number is 1508810938.

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Frequently Asked Questions

Does Mathias A. Masem accept virtual/telehealth appointments?
Mathias A. Masem has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
What languages does Mathias A. Masem speak?
Mathias A. Masem speaks English.
Where is Mathias A. Masem's office located?
Mathias A. Masem's office is located at 1500 Owens St, San Francisco, CA, 94158.
Does Mathias A. Masem accept my insurance?
You can see the insurance plans that Mathias A. Masem accepts on their Vitals profile.
Is Mathias A. Masem accepting new patients?
Mathias A. Masem is accepting new patients on Vitals. View Mathias A. Masem's profile on Vitals to make an appointment.

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