CARMEN B AYALA
NPI 1649426750
Nurse Practitioner - Family in Fairfax, VA
About Carmen B Ayala NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CARMEN B AYALA (NPI 1649426750) is an individual family provider in Fairfax, Virginia, licensed in Virginia (0024167945) and active in the NPI registry since August 2008. She is enrolled in Medicare PECOS, is affiliated with Virginia Hospital Center, and maintains a secondary practice location in Alexandria.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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
Carmen B Ayala 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 Carmen Ayala reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Reston, VA 20191
- Reassigned Medicare billing, District of Columbia enrollment
- 135 clinicians in this Medicare group
Arlington, VA 22203
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 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 8
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Virginia Hospital Center
Acute Care Hospitals · Arlington, 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.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Carmen Ayala's NPI number?
The NPI number for Carmen Ayala is 1649426750. It was assigned to this individual provider in the NPPES registry on August 8, 2008.
Where is Carmen Ayala located?
Carmen Ayala practices at 3620 Joseph Siewick Dr Ste 203, Fairfax, VA 22033. The listed phone number is (703) 941-0267.
What is Carmen Ayala's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Carmen Ayala enrolled in Medicare?
Yes. Carmen Ayala 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 Carmen Ayala's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carmen Ayala reassigns Medicare benefits to 2 organizations: Loudoun Medical Group, PC (Reston, 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 Carmen Ayala's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Carmen Ayala affiliated with any hospitals?
According to CMS data, Carmen Ayala is affiliated with Virginia Hospital Center.
When was this NPI record last updated?
The NPPES record for Carmen Ayala was last updated on March 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.
# Carmen B Ayala · NPI 1649426750
Family physician in Fairfax, Virginia. Individual provider, active in the CMS NPPES registry since August 8, 2008.
## Identity
- **NPI:** 1649426750 (Entity type: Individual)
- **Enumerated:** August 8, 2008
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 0024167945 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 3620 JOSEPH SIEWICK DR STE 203, Fairfax, VA 22033-1756
- **Phone:** (703) 941-0267
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Loudoun Medical Group, PC (NPI 1669147583, Reston, VA); Privia Medical Group, LLC (NPI 1013042480, Arlington, VA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** March 24, 2026
- **Other identifiers:** Medicaid 30016191050002 (VA)
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Source: [NPI Profile](https://npiprofile.com/npi/1649426750) · Data from the CMS NPPES public registry.