Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Marc Eisenbaum, MD

Individual provider Internal Medicine Physician · NPI 1083710008

Dr. Marc Eisenbaum, MD practises Internal Medicine in Fairfax, Virginia. Graduated from George Washington University School of Medicine in 1981, 45 years ago. Practices with Select Rehabilitation, LLC, a 2,028-clinician group and accepts Medicare assignment. Licensed in Virginia.

Years since qualifying
45
Trained at
George Washington University School of Medicine
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

3580 Joseph Siewick Dr Ste 304
Fairfax, VA 22033-1764
Phone: (703) 758-8313
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 0101040504 (VA)

Record details

NPI number1083710008
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 16, 2006
Last updated in NPPESJune 3, 2026
Certification dateJune 3, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolGEORGE WASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1981 (45 years in practice)
Group practice Select Rehabilitation, Llc — 2028 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients614
Services billed 3,407 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Select Rehabilitation, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2028 clinicians in the practice; 12 are shown here.

Other providers in Fairfax