Physician Profile
Unclaimed ProfileAbout THEISS
Mark M Theiss, M.D. is a healthcare provider in Falls Church, VA specializing in sports medicine. Mark trained at Georgetown University School of Medicine, graduating in 1975. Mark is also listed as specializing in orthopaedic surgery and orthopaedic sports medicine. According to Medicare claims data, Mark cared for 961 Medicare patients across 3,553 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (703) 776-4001
- Email not available
Practice Locations
3300 GALLOWS RD
Falls Church, VA 22042
Procedures Most Often Billed to Medicare
3,553 services · 961 patients · 15 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
216 |
| Replacement of thigh bone and hip joint with prosthesis | Procedure | 27130 |
18 |
| Replacement of knee joint, both sides of knee | Procedure | 27447 |
13 |
| X-ray of knee, 4 or more views | Imaging | 73564 |
154 |
| X-ray of hip, 2-3 views | Imaging | 73502 |
73 |
| X-ray of hip, 1 view | Imaging | 73501 |
36 |
| X-ray of knee, 3 views | Imaging | 73562 |
19 |
| Hyaluronan or derivitive, genvisc 850, for intra-articular injection, 1 mg | Drug given | J7320 |
1,977 |
| Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg | Drug given | J0702 |
460 |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | Drug given | J3301 |
91 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at Georgetown University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1975 at Georgetown University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid from large joint 8
Providers in VA who bill this service to Medicare most often.
Common questions
What is Dr. Theiss's specialty?
Dr. Theiss is a sports medicine in Falls Church, VA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “SPORTS MEDICINE”.
NPI registry
Where can I find Dr. Theiss?
Dr. Theiss is listed at 3300 GALLOWS RD, Falls Church, VA 22042. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Theiss?
The number on file is (703) 776-4001. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Theiss's NPI number?
Dr. Theiss's National Provider Identifier is 1669534350. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Theiss's medical education?
Dr. Theiss attended Georgetown University School of Medicine, graduating in 1975. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Theiss been practicing?
Dr. Theiss has 51 years experience. Calculated from a graduation year of 1975, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Theiss known for?
According to Medicare billing data, Dr. Theiss performs procedures including aspiration and/or injection of fluid from large joint, replacement of thigh bone and hip joint with prosthesis and replacement of knee joint, both sides of knee; reads or performs imaging such as x-ray of knee, 4 or more views and x-ray of hip, 2-3 views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Theiss confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Theiss. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.