Douglas Mao

Primary specialty

Mental Health CounselorTaxonomy code 101YM0800X

License

0701014878 Issued in VA

Practice address

21641 Ridgetop Cir Ste 210
Sterling, VA 20166-6597

Phone

(703) 771-5155

NPI assigned

Apr 20, 2020

Last updated

May 30, 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 1

Addresses

Medicare fee-for-service enrollment

Enrolled in VA

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

Mental Health Counselor

Education

Other, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

County of Loudoun VirginiaGroup PAC ID 8426039959, 30 clinicians

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• County of Loudoun, Virginia

  dba Loudoun County Community Services Board

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Leesburg, VA
  • NPI 1386753291
  Medicare reassignment Care Compare group NPD
• County of Loudoun, Virginia

  dba Loudoun County Health Department

  • State or Local Public Health Clinic/Center
  • Leesburg, VA
  • NPI 1588353569
  NPD
• County of Loudoun, Virginia

  dba Loudoun County Health Department Dental Clinic

  • State or Local Public Health Clinic/Center
  • Leesburg, VA
  • NPI 1134811193
  NPD (past)

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

{
    "created_epoch": "1587340800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1748563200000",
    "number": "1619597648",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "21641 RIDGETOP CIR STE 210",
            "city": "STERLING",
            "state": "VA",
            "postal_code": "201666597"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "21641 RIDGETOP CIR STE 210",
            "city": "STERLING",
            "state": "VA",
            "postal_code": "201666597",
            "telephone_number": "703-771-5155"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MAO",
        "first_name": "DOUGLAS",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-04-20",
        "last_updated": "2025-05-30",
        "certification_date": "2025-05-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": "VA",
            "license": "0701014878",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Lisa Pascarella Mangano, OTR/L
• Mary Grasmeder Mangus
• Chenel Mann, COUNSELORINRESIDENCE
• Tamer Mansour, M.D.
• Mao Pharmacy, Inc. (Westwood Pharmacy-Loudoun)
• Kelley Marfiak
• Julia Margol, DMD
• Marie Hooshmand DDS PC
• Gabriella M Marino
• Stephanie Mark, DMD

• Mental Health Counselor in Sterling, VA
• Providers in Sterling, 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 May 30, 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.