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

Dr. Siham Mohieldin Mahgoub, MD

Individual provider Infectious Disease Physician · NPI 1194834754

Dr. Siham Mohieldin Mahgoub, MD is an Internal Medicine in Williamsburg, Virginia. Qualified in 1991, 35 years ago. Practices with Howard University, a 182-clinician group, works from 4 locations, accepts Medicare assignment and offers telehealth. Licensed in New York and Virginia.

Years since qualifying
35
Licensed in
NY, VA
In the registry since
2006
Specialties on file
3
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

400 Sentara Cir Ste 201B
Williamsburg, VA 23188-5716
Phone: (757) 345-4655
Fax: (757) 390-4892
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 1701 14th St Nw, Washington, DC 20009-4308 — (202) 797-3563
  • 2041 Georgia Ave Nw Med Arts 3rd Floor, Washington, DC 20060-4308 — (202) 865-7513
  • 502 W Broad St Ste 2, Falls Church, VA 22046-3206 — (571) 421-8431

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 0101239997 (VA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0101239997 (VA)
Infectious Disease Physician Taxonomy 207RI0200X · Licence 2189841 (NY)

Record details

NPI number1194834754
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 29, 2006
Last updated in NPPESJanuary 6, 2026
Certification dateJanuary 6, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Group practice Howard University — 182 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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