Siham Mohieldin Mahgoub, MD

Primary specialty

Infectious Disease PhysicianTaxonomy code 207RI0200X

License

0101239997 Issued in VA

Practice address

400 Sentara Cir Ste 201B
Williamsburg, VA 23188-5716

Phone

(757) 345-4655

Fax

(757) 390-4892

NPI assigned

Aug 29, 2006

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in DC, VA2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Internal Medicine

Education

Other, 1991

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Howard UniversityGroup PAC ID 0941109565, 182 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: sihammahgoub@hufp.allscriptsdirect.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Howard University

  dba Faculty Practice Plan Howard University

  • Multi-Specialty Clinic/Center
  • Washington, DC
  • NPI 1033163597

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Martha Jefferson Medical Group LLC

  • Family Medicine Physician
  • Charlottesville, VA
  • NPI 1275720559

  Internal Medicine

  Medicare reassignment NPD
• Sentara Medical Group

  • Family Medicine Physician
  • Norfolk, VA
  • NPI 1265485270

  Internal Medicine

  Medicare reassignment NPD
• Frederick Health Hospital Inc

  dba Frederick Health Hospital

  • General Acute Care Hospital
  • Frederick, MD
  • NPI 1538165527
  NPD (past)
• Whitman-Walker Clinic Inc.

  dba Whitman-Walker Pharmacy

  • Community/Retail Pharmacy
  • Washington, DC
  • NPI 1003316316
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1156809600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767657600000",
    "number": "1194834754",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "400 SENTARA CIR STE 201B",
            "city": "WILLIAMSBURG",
            "state": "VA",
            "postal_code": "231885716",
            "telephone_number": "757-345-4655",
            "fax_number": "757-390-4892"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "400 SENTARA CIR STE 201B",
            "city": "WILLIAMSBURG",
            "state": "VA",
            "postal_code": "231885716",
            "telephone_number": "757-345-4655",
            "fax_number": "757-390-4892"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2041 Georgia Ave NW Med Arts 3rd Floor",
            "address_purpose": "LOCATION",
            "city": "Washington",
            "state": "DC",
            "postal_code": "200604308",
            "country_code": "US",
            "telephone_number": "202-865-7513",
            "fax_number": "202-865-1037",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "502 W Broad St Ste 2",
            "address_purpose": "LOCATION",
            "city": "Falls Church",
            "state": "VA",
            "postal_code": "220463206",
            "country_code": "US",
            "telephone_number": "571-421-8431",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1701 14th St NW",
            "address_purpose": "LOCATION",
            "city": "Washington",
            "state": "DC",
            "postal_code": "200094308",
            "country_code": "US",
            "telephone_number": "202-797-3563",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MAHGOUB",
        "first_name": "SIHAM",
        "middle_name": "MOHIELDIN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-08-29",
        "last_updated": "2026-01-06",
        "certification_date": "2026-01-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "VA",
            "license": "0101239997",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "VA",
            "license": "0101239997",
            "primary": false
        },
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "NY",
            "license": "2189841",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "02224422",
            "state": "NY"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "VAExchange@patientfirst.com",
            "affiliation": "N",
            "endpointDescription": "email",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "address_1": "502 W Broad St Ste 2",
            "city": "Falls Church",
            "state": "VA",
            "country_code": "US",
            "postal_code": "220463206",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Alison Christine Maddox, PMHNP-BC
• Sarah Maddox, RBT
• Jonathan Alan Mahaffey, DMD
• Connor Mahan, MOT, OTR
• David J Maharty, D.M.D
• Kimberly Dianne Maigi, NP
• James Patrick Majdic, DO
• Adrian Mallicott, LPTA
• Islam Mallory
• Laura Caitlin Mangelsdorf, LCSW

• Infectious Disease Physician in Williamsburg, VA
• Providers in Williamsburg, VA by specialty
• Infectious Disease Physician in Virginia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 6, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.