WILLIAM EDWIN TOWNE MD
NPI 1184144958
Family Medicine in Fairfax, VA
About William Edwin Towne Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM EDWIN TOWNE MD (NPI 1184144958) is an individual family medicine provider in Fairfax, Virginia, licensed in Virginia (0116030242) and active in the NPI registry since June 2017. He is enrolled in Medicare PECOS and is a graduate of Virginia Commonwealth University, School Of Medicine (2017).
NPPES Registry Identity
Specialties & Licenses
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 Edwin Towne Md 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
3Medicare enrollment records show William Towne reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chantilly, VA 20151
- Reassigned Medicare billing, District of Columbia enrollment
- 379 clinicians in this Medicare group
Fairfax, VA 22033
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1285752121 (Maryland)
- 2,492 clinicians in this Medicare group
Arlington, VA 22203
- Reassigned Medicare billing, District of Columbia enrollment
- 1,534 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.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 22033 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FAIRFAX, VA 22033
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 Towne's NPI number?
The NPI number for William Towne is 1184144958. It was assigned to this individual provider in the NPPES registry on June 22, 2017.
Where is William Towne located?
William Towne practices at 3650 Joseph Siewick Dr Ste 400, Fairfax, VA 22033. The listed phone number is (703) 391-2020.
What is William Towne's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is William Towne enrolled in Medicare?
Yes. William Towne 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 Towne's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Towne reassigns Medicare benefits to 3 organizations: Inova Physician Partners, LLC (Chantilly, VA), Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Fairfax, VA) and Privia Medical Group, LLC (Arlington, 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 Towne's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for William Towne was last updated on June 11, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 Edwin Towne, MD · NPI 1184144958
Family Medicine physician in Fairfax, Virginia. Individual provider, active in the CMS NPPES registry since June 22, 2017.
## Identity
- **NPI:** 1184144958 (Entity type: Individual)
- **Enumerated:** June 22, 2017
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 0116030242 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 3650 JOSEPH SIEWICK DR STE 400, Fairfax, VA 22033-1715
- **Phone:** (703) 391-2020
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Inova Physician Partners, LLC (NPI 1215264916, Chantilly, VA); Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (NPI 1215058326, Fairfax, VA); Privia Medical Group, LLC (NPI 1013042480, Arlington, VA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Virginia Commonwealth University, School Of Medicine, class of 2017
## Record status
- **NPPES last updated:** June 11, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1184144958) · Data from the CMS NPPES public registry.