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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (17)

The overall average patient rating of Dr. Mark Theiss, Orthopaedic Surgeon is Good. Dr. Theiss has been reviewed by 45 patients who have provided 17 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 3.8
Promptness 4.0
Courteous Staff 4.3
Accurate Diagnosis 4.8
Bedside Manner 4.7
Spends Time with Me 4.7
Follows Up After Visit 4.3

Specialties & Research

  • He has special expertise in 10 areas:
  • ACL Reconstruction or Anterior Cruciate Ligament Reconstruction (Bone-Patellar Tendon-Bone Graft)
  • Carpal Tunnel Syndrome
  • Elbow Injuries
  • Hip Surgery (Hip Replacement Arthroplasty)
  • Joint Diseases
  • Knee Surgery (Knee Replacement Arthroplasty)
  • Leg Fracture (Tibial Fractures)
  • Rotator Cuff Problem (Shoulder Impingement Syndrome)
  • Shoulder Pain
  • Sports Medicine

Education & Awards

Dr. Theiss graduated from Georgetown University, Washington. He has 3 awards.

Patients' Choice 5th Anniversary Award (2014)
Patients' Choice Award (2008, 2010 - 2014)
Compassionate Doctor Recognition (2010 - 2013, 2015)


Dr. Theiss has 2 hospital affiliations:

  • Inova Fairfax Hospital 
  • Inova Fair Oaks Hospital 


  • French
  • English

> > > > Dr. Mark Theiss, MD

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Additional Information
Dr. Mark Monre Theiss MD is a male Orthopaedic Surgeon, has 37 years of experience and practices in Adult Reconstructive Orthopaedic Surgery, Orthopaedic Trauma, Sports Medicine, and Trauma Surgery.
Where does Dr. Mark M. Theiss practice?
Dr. Mark Theiss has 1 office location.
Dr. Mark Theiss practices Adult Reconstructive Orthopaedic Surgery, Orthopaedic Trauma, Sports Medicine, and Trauma Surgery near Fairfax, VA.
See Fairfax Surgeons and Fairfax Orthopedic Surgeons.