Siham Mahgoub, MD
NPI 1194834754 · Infectious Disease Physician · Williamsburg, VA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Siham Mahgoub, MD is a Infectious Disease Physician provider in Williamsburg, VA (NPI 1194834754).
Provider details
- NPI number
- 1194834754
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 0101239997 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 51 |
| Abacavir/Dolutegravir/Lamivudibrand: Triumeq | 20 |
| Cabotegravir/Rilpivirinebrand: Cabenuva | 17 |
| Elviteg/Cob/Emtri/Tenof Alafenbrand: Genvoya | 11 |
| Dolutegravir/Rilpivirinebrand: Juluca | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (3)
- 2041 Georgia Ave Nw Med Arts 3rd FloorWashington, DC 20060-4308Phone: (202) 865-7513Fax: (202) 865-1037
- 1701 14th St NwWashington, DC 20009-4308Phone: (202) 797-3563
- 502 W Broad St Ste 2Falls Church, VA 22046-3206Phone: (571) 421-8431
Registry dates
- Enumerated
- 2006-08-29
- Last updated
- 2026-01-06
- Certified
- 2026-01-06
Frequently asked questions
- What is Siham Mahgoub's NPI number?
- Siham Mahgoub's National Provider Identifier (NPI) is 1194834754, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siham Mahgoub's specialty?
- Siham Mahgoub is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Siham Mahgoub located?
- Siham Mahgoub's practice location on file with NPPES is 400 Sentara Cir Ste 201b, Williamsburg, VA 23188-5716.
- What is Siham Mahgoub's phone number?
- The practice phone number listed in the NPPES registry for Siham Mahgoub is (757) 345-4655.
- Does Siham Mahgoub accept Medicare?
- Siham Mahgoub is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Siham Mahgoub's NPI active?
- Yes — Siham Mahgoub's NPI (1194834754) is active in the NPPES registry as of the last update on 2026-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.