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

Dr. Marc Oliver Siegel, MD

Individual provider Infectious Disease Physician · NPI 1306866140

Dr. Marc Oliver Siegel, MD is an Infectious Disease in Washington, District of Columbia. Graduated from Georgetown University School of Medicine in 1998, 28 years ago. Practices with Medical Faculty Associates, Inc, a 684-clinician group and accepts Medicare assignment. Licensed in District of Columbia.

Years since qualifying
28
Trained at
Georgetown University School of Medicine
Licensed in
DC
In the registry since
2006
Specialties on file
2
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

2150 Pennsylvania Ave NW
Washington, DC 20037-3201
Phone: (202) 741-2234
Fax: (202) 741-2241
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence MD32009 (DC)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD32009 (DC)

Record details

NPI number1306866140
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 21, 2006
Last updated in NPPESMay 22, 2009

Medicare enrollment

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

Medicare specialtyINFECTIOUS DISEASE
Medical schoolGEORGETOWN UNIVERSITY SCHOOL OF MEDICINE
Graduated 1998 (28 years in practice)
Group practice Medical Faculty Associates, Inc — 684 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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