ESTHER MOON
NPI 1851021281
Family Medicine in Fairfax, VA
About Esther Moon NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ESTHER MOON (NPI 1851021281) is an individual family medicine provider in Fairfax, Virginia, licensed in Virginia (0116036367) and active in the NPI registry since June 2022. She is enrolled in Medicare PECOS, is affiliated with Inova Fairfax Hospital, and is a graduate of Howard University College Of Medicine (2022).
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
Esther Moon 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 Reassignment
Medicare enrollment records show Esther Moon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Herndon, VA 20170
- Reassigned Medicare billing, District of Columbia enrollment
- 66 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Inova Fairfax Hospital
Acute Care Hospitals · Falls Church, VAInova Fair Oaks Hospital
Acute Care Hospitals · Fairfax, VAPhysician 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.
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 Esther Moon's NPI number?
The NPI number for Esther Moon is 1851021281. It was assigned to this individual provider in the NPPES registry on June 17, 2022.
Where is Esther Moon located?
Esther Moon practices at 3650 Joseph Siewick Dr, Fairfax, VA 22033. The listed phone number is (703) 391-0202.
What is Esther Moon's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Esther Moon enrolled in Medicare?
Yes. Esther Moon 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 organization bills Medicare for Esther Moon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Esther Moon reassigns Medicare benefits to Fairfax Family Practice Centers PC (Herndon, VA). The 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 Esther Moon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Esther Moon affiliated with any hospitals?
According to CMS data, Esther Moon is affiliated with Inova Fairfax Hospital and Inova Fair Oaks Hospital.
When was this NPI record last updated?
The NPPES record for Esther Moon was last updated on June 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Esther Moon · NPI 1851021281
Family Medicine physician in Fairfax, Virginia. Individual provider, active in the CMS NPPES registry since June 17, 2022.
## Identity
- **NPI:** 1851021281 (Entity type: Individual)
- **Enumerated:** June 17, 2022
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 0116036367 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 3650 JOSEPH SIEWICK DR, Fairfax, VA 22033-1710
- **Phone:** (703) 391-0202
## 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:** Fairfax Family Practice Centers PC (NPI 1205944964, Herndon, VA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Howard University College Of Medicine, class of 2022
## Record status
- **NPPES last updated:** June 17, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1851021281) · Data from the CMS NPPES public registry.