Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mark R McMahon, MD

Individual provider Orthopaedic Surgery Physician · NPI 1497764435

Mark R McMahon, MD is an Orthopaedic Surgery Physician in Fairfax, Virginia. Licensed in Virginia. Registered with an NPI since 2006.

Licensed in
VA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3620 Joseph Siewick Dr Ste 100
Fairfax, VA 22033-1757
Phone: (703) 810-5223
Fax: (703) 810-5403
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence 0101049426 (VA)

Record details

NPI number1497764435
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 7, 2006
Last updated in NPPESOctober 28, 2020
Certification dateOctober 28, 2020
Mailing addressPo Box 75420, Baltimore, MD 21275-5420

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