Individual provider Active NPI

Marjolijn Narsis Hiemstra, LPC, QSACM, NLP

  • Professional Counselor
  • Fairfax, VA
National Provider Identifier
1659073161
Registry record updated Feb 15, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Professional CounselorTaxonomy code 101YP2500X
License
0701012302 Issued in VA
Practice address
8221 Willow Oaks Corporate Dr
Fairfax, VA 22031-4512
Phone
(571) 544-2134
NPI assigned
Mar 20, 2023
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Feb 15, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Professional Counselor 101YP2500X 0701012302 VA Primary

Addresses

Primary practice location

8221 Willow Oaks Corporate Dr
Fairfax, VA 22031-4512

Mailing address

14451 N Slope St
Centreville, VA 20120-4151
Phone (571) 409-1783

Other practice location 1

14451 N Slope St
Centreville, VA 20120-4151
Phone (571) 409-1783

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20231228000704 DC Practitioner - Mental Health Counselor 1456701887 Reassigns benefits to 1 organization

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
0701012302VAMDProfessional Counselor

Practice roles

OrganizationSpecialtyStatusNew patients
Nova Therapy Lounge, LLC CurrentSince Sep 23, 2024 Accepting new patients
Fairfax County, Virginia CurrentSince Jan 1, 2024 Accepting new patients
Fairfax Falls Church Community Service Board PastSince Mar 1, 2023 Accepting new patients

Locations

4211 Walney Rd
Chantilly, VA 20151
Phone (703) 227-7100

4213 Walney Rd
Chantilly, VA 20151
Phone (703) 502-7000

12011 Government Center Pkwy
Ste 836
Fairfax, VA 22035
Phone (703) 324-7017

8221 Willow Oaks Corporate Dr
Fairfax, VA 22031
Phone (703) 289-7599

Organizations & group practices 3

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.

NPI Registry JSON

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

{
    "created_epoch": "1679270400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771113600000",
    "number": "1659073161",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "14451 N SLOPE ST",
            "city": "CENTREVILLE",
            "state": "VA",
            "postal_code": "201204151",
            "telephone_number": "571-409-1783"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8221 WILLOW OAKS CORPORATE DR",
            "city": "FAIRFAX",
            "state": "VA",
            "postal_code": "220314512",
            "telephone_number": "571-544-2134"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "14451 N Slope St",
            "address_purpose": "LOCATION",
            "city": "Centreville",
            "state": "VA",
            "postal_code": "201204151",
            "country_code": "US",
            "telephone_number": "571-409-1783",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HIEMSTRA",
        "first_name": "MARJOLIJN",
        "middle_name": "NARSIS",
        "credential": "LPC, QSACM, NLP",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2023-03-20",
        "last_updated": "2026-02-15",
        "certification_date": "2026-02-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YP2500X",
            "taxonomy_group": "",
            "desc": "Counselor, Professional",
            "state": "VA",
            "license": "0701012302",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Fairfax, VA

Sources for this page

Verify at the official NPI Registry.