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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

PROST COUNSELING SERVICES, LLC
NPI 1306357140
Community/Behavioral Health in Fairfax, VA

Active since October 19, 2017
9675 MAIN ST STE C, FAIRFAX, VA 22031(314) 640-1530 Get Directions Write a Review

NPPES record last updated: September 2, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 2, 2026, Mar 17, 2018, Oct 19, 2017 (3 updates tracked since 2017).

About Prost Counseling Services, Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

PROST COUNSELING SERVICES, LLC (NPI 1306357140) is a healthcare organization registered as a community/behavioral health in Fairfax, Virginia and active in the NPI registry since October 2017. The organization lists Diane Mccarthy Prost, Licensed Professional Counselor, as its authorized official.

NPPES Registry Identity

NPI1306357140
Entity TypeOrganization
Primary Taxonomy251S00000X
Legal Business NamePROST COUNSELING SERVICES, LLC
Location Address9675 MAIN ST STE CFairfax, VA 22031-3762
Mailing Address10522 Rosehaven St Apt 214Fairfax, VA 22030-2862 · (314) 640-1530
Phone(314) 640-1530
Organization SubpartNo
Authorized OfficialDiane Mccarthy ProstLicensed Professional Counselor · (314) 640-1530
Enumeration DateOctober 19, 2017
Last NPPES UpdateSeptember 2, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 2, 2026
✔ NPI 1306357140 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCommunity/Behavioral HealthAgencies
Taxonomy Code251S00000X
License✔ Licensed in MO · 2011037455
Definition
A private or public agency usually under local government jurisdiction, responsible for assuring the delivery of community based mental health, intellectual disabilities, substance abuse and/or behavioral health services to individuals with those disabilities. Services may range from companion care, respite, transportation, community integration, crisis intervention and stabilization, supported employment, day support, prevocational services, residential support, therapeutic and supportive consultation, environmental modifications, intensive in-home therapy and day treatment, in addition to traditional mental health and behavioral treatment.
9675 MAIN ST STE C, Fairfax, VA 22031
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Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KRISTIN ELLEN ZIMMERMAN LMSW
Counselor (Mental Health)
9675 MAIN ST STE C
FAIRFAX, VA 22031
Fairfax County (703) 334-0409
KUMBE ANABELLE MARIA HWANG LMSW
Social Worker
9675 MAIN ST STE C
FAIRFAX, VA 22031
Fairfax County (703) 835-2578
DR. DIANE MCCARTHY PROST PSYD, MED, NCC, LPC
Counselor (Professional)
9675 MAIN ST STE C
FAIRFAX, VA 22031
Fairfax County (314) 640-1530
MRS. DEBORAH FINERTY-O'BRIEN M.S.W,L.C.S.W
Counselor (Mental Health)
9675 MAIN ST STE C
FAIRFAX, VA 22031
Fairfax County (703) 334-0409
FAIRFAX THERAPY SOLUTIONS LLC
Counselor (Mental Health)
9675 MAIN ST STE C
FAIRFAX, VA 22031
Fairfax County (703) 899-8222

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Prost Counseling Services, LLC's NPI number?

The NPI number for Prost Counseling Services, LLC is 1306357140. It was assigned to this organization in the NPPES registry on October 19, 2017.

Where is Prost Counseling Services, LLC located?

Prost Counseling Services, LLC is located at 9675 Main St Ste C, Fairfax, VA 22031. The listed phone number is (314) 640-1530.

What is Prost Counseling Services, LLC's specialty?

The primary specialty registered for this NPI is Community/Behavioral Health with taxonomy code 251S00000X.

When was this NPI record last updated?

The NPPES record for Prost Counseling Services, LLC was last updated on September 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.