Diane McCarthy Prost, PSYD, MED, NCC, LPC

Primary specialty

Professional CounselorTaxonomy code 101YP2500X

License

0701013187 Issued in VA

Practice address

9675 Main St Ste C
Fairfax, VA 22031-3762

Phone

(314) 640-1530

NPI assigned

Dec 27, 2016

Sex

Female

Sole proprietor

Yes

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

Enrolled in MO

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, 2011

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Master of Education

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.

• Prost Counseling Services, LLC

  • Community/Behavioral Health Agency
  • Fairfax, VA
  • NPI 1306357140

  MO

  Medicare reassignment NPD Authorized official

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

{
    "created_epoch": "1482796800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788307200000",
    "number": "1568907749",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10522 ROSEHAVEN ST APT 214",
            "city": "FAIRFAX",
            "state": "VA",
            "postal_code": "220302862",
            "telephone_number": "314-640-1530"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9675 MAIN ST STE C",
            "city": "FAIRFAX",
            "state": "VA",
            "postal_code": "220313762",
            "telephone_number": "314-640-1530"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "PROST",
        "first_name": "DIANE",
        "middle_name": "MCCARTHY",
        "name_prefix": "Dr.",
        "credential": "PSYD, MED, NCC, LPC",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2016-12-27",
        "last_updated": "2026-09-02",
        "certification_date": "2026-09-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YP2500X",
            "taxonomy_group": "",
            "desc": "Counselor, Professional",
            "state": "VA",
            "license": "0701013187",
            "primary": true
        },
        {
            "code": "101YP2500X",
            "taxonomy_group": "",
            "desc": "Counselor, Professional",
            "state": "MO",
            "license": "2011037455",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Prospect Homecare Agency
• Prosperity Labs LLC
• Prosperity Pharmacy Med Center Inc (Hann's Pharmacy)
• Prosperity RX Fairfax Inc
• Prost Counseling Services, LLC
• Marina Protopapas, D.O.
• Providence Dental Arts
• Erika Pruett, PSY.D.
• Robert Przybylski
• Przybysz Chiropractic PLLC

• Professional Counselor in Fairfax, VA
• Providers in Fairfax, VA by specialty
• Professional Counselor in Virginia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 2, 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.