Sophia Maria Mastakas, LCSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

0904019304 Issued in VA

Practice address

6901 S Van Dorn St
Alexandria, VA 22315-3961

Phone

(703) 313-6300

NPI assigned

Oct 21, 2025

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in DC

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Social Worker

Education

Other, 2022

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

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

• Fairfax County, Virginia

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Fairfax, VA
  • NPI 1154356244

  DC

  Medicare reassignment NPD

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

{
    "created_epoch": "1761004800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761264000000",
    "number": "1386511764",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6901 S VAN DORN ST",
            "city": "ALEXANDRIA",
            "state": "VA",
            "postal_code": "223153961"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6901 S VAN DORN ST",
            "city": "ALEXANDRIA",
            "state": "VA",
            "postal_code": "223153961",
            "telephone_number": "703-313-6300"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASTAKAS",
        "first_name": "SOPHIA",
        "middle_name": "MARIA",
        "credential": "LCSW",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-10-21",
        "last_updated": "2025-10-24",
        "certification_date": "2025-10-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "VA",
            "license": "0904019304",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ayanna Marie Mason
• David Leon Mason Jr.
• Asad Masri, M.D.
• Dina R Masri, BEHAVIOR TECHNICIAN
• Phenories Massenburg
• Jan L Master, CRNP
• Alayna Celistina Mata
• Renat Matalon, BCBA, LBA
• Somayah Mateen
• Louis Philippe Mateus, PSY.D.

• Clinical Social Worker in Alexandria, VA
• Providers in Alexandria, VA by specialty
• Clinical Social Worker in Virginia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 24, 2025; 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.