PROST COUNSELING SERVICES, LLC
NPI 1306357140
Community/Behavioral Health in Fairfax, VA
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
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Prost Counseling Services, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Prost Counseling Services, LLC, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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.
Is Prost Counseling Services, LLC enrolled in Medicare?
Yes. Prost Counseling Services, LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Prost Counseling Services, LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Mental Health Counselor) reassigns their Medicare billing to Prost Counseling Services, LLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 59 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.
# Prost Counseling Services, Llc · NPI 1306357140
Community/Behavioral Health organization in Fairfax, Virginia. Organization record, active in the CMS NPPES registry since October 19, 2017.
## Identity
- **NPI:** 1306357140 (Entity type: Organization)
- **Enumerated:** October 19, 2017
- **Primary specialty:** Community/Behavioral Health · taxonomy 251S00000X
- **Organization subpart:** No
- **Authorized official:** Diane Prost, LICENSED PROFESSIONAL COUNSELOR
## Practice location
- **Address:** 9675 MAIN ST STE C, Fairfax, VA 22031-3762
- **Phone:** (314) 640-1530
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Mental Health Counselor) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 2, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1306357140) · Data from the CMS NPPES public registry.