Maher Massis

Primary specialty

Mental Health CounselorTaxonomy code 101YM0800X

License

0704018169 Issued in VA

Practice address

13655 Dulles Technology Dr Ste 120
Herndon, VA 20171-4634

Phone

(571) 665-4025

NPI assigned

Jun 23, 2025

Last updated

Jun 23, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not 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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Afshar Brothers Inc.

  dba Ellie Mental Health

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Herndon, VA
  • NPI 1629787809
  NPD

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

{
    "created_epoch": "1750636800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750636800000",
    "number": "1023905858",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "13582 BIG BOULDER RD",
            "city": "HERNDON",
            "state": "VA",
            "postal_code": "201715000",
            "telephone_number": "571-236-7588"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "13655 DULLES TECHNOLOGY DR STE 120",
            "city": "HERNDON",
            "state": "VA",
            "postal_code": "201714634",
            "telephone_number": "571-665-4025"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASSIS",
        "first_name": "MAHER",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-06-23",
        "last_updated": "2025-06-23",
        "certification_date": "2025-06-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": "VA",
            "license": "0704018169",
            "primary": true
        },
        {
            "code": "101YP2500X",
            "taxonomy_group": "",
            "desc": "Counselor, Professional",
            "state": "VA",
            "license": "0704018169",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Adrienne Nicole Martinez
• Daniel F Martino, LPC, CSAC
• Sofia Marzo
• Jason Leo Maslow, PA
• Massis Speech & Language PLLC
• Petra Massis, CCC-SLP
• Deepika Mathialagan
• Hunter Daniel Mathias, DPT, PT, ATC, AEMT
• Mavens DME Care Supply LLC
• Nair Maya, M.D.

• Mental Health Counselor in Herndon, VA
• Providers in Herndon, VA by specialty
• Mental Health Counselor in Virginia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 23, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.