WILLIAM C KAPFER
NPI 1003529983
Counselor - Professional in Reston, VA
About William C Kapfer NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM C KAPFER (NPI 1003529983) is an individual professional provider in Reston, Virginia, licensed in Virginia (0701013229) and active in the NPI registry since January 2023. He is enrolled in Medicare PECOS and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
William C Kapfer is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show William Kapfer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Arlington, VA 22207
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 267 clinicians in this Medicare group
Lynchburg, VA 24504
- Reassigned Medicare billing, District of Columbia enrollment
- 143 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
RESTON, VA 20190
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 William Kapfer's NPI number?
The NPI number for William Kapfer is 1003529983. It was assigned to this individual provider in the NPPES registry on January 5, 2023.
Where is William Kapfer located?
William Kapfer practices at 11260 Roger Bacon Dr Ste 103, Reston, VA 20190. The listed phone number is (855) 284-7483.
What is William Kapfer's specialty?
The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.
Is William Kapfer enrolled in Medicare?
Yes. William Kapfer is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for William Kapfer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Kapfer reassigns Medicare benefits to 2 organizations: Columbia Associates In Psychiatry PC (Arlington, VA) and Thrive Counseling LLC (Lynchburg, VA). Each 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 William Kapfer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Kapfer accept?
Health plans from Oscar Health list William Kapfer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for William Kapfer was last updated on January 22, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.
# William C Kapfer · NPI 1003529983
Professional provider in Reston, Virginia. Individual provider, active in the CMS NPPES registry since January 5, 2023.
## Identity
- **NPI:** 1003529983 (Entity type: Individual)
- **Enumerated:** January 5, 2023
- **Primary specialty:** Counselor - Professional · taxonomy 101YP2500X
- **State license:** 0701013229 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 11260 ROGER BACON DR STE 103, Reston, VA 20190-5203
- **Phone:** (855) 284-7483 · **Fax:** (617) 807-0958
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Columbia Associates In Psychiatry PC (NPI 1699012930, Arlington, VA); Thrive Counseling LLC (NPI 1215181300, Lynchburg, VA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** January 22, 2024
---
Source: [NPI Profile](https://npiprofile.com/npi/1003529983) · Data from the CMS NPPES public registry.