ALYSON R SEVERINO ACNP
NPI 1437418563
Nurse Practitioner in Leesburg, VA
About Alyson R Severino Acnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALYSON R SEVERINO ACNP (NPI 1437418563) is an individual nurse practitioner in Leesburg, Virginia, licensed in Virginia (0024176872) and active in the NPI registry since May 2012. She is enrolled in Medicare PECOS, is affiliated with Inova Loudoun Hospital, and maintains 6 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 6
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
Alyson R Severino Acnp 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 Alyson Severino reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Vienna, VA 22180
- Reassigned Medicare billing, Virginia and District of Columbia enrollments
- Also billed through NPI 1669511051 (District of Columbia)
- 2,379 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- 264 clinicians in this Medicare group
Alexandria, VA 22306
- Reassigned Medicare billing, Virginia enrollment
- 31 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Inova Loudoun Hospital
Acute Care Hospitals · Leesburg, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20176 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.
LEESBURG, VA 20176
LEESBURG, VA 20176
LEESBURG, VA 20176
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 Alyson Severino's NPI number?
The NPI number for Alyson Severino is 1437418563. It was assigned to this individual provider in the NPPES registry on May 9, 2012.
Where is Alyson Severino located?
Alyson Severino practices at 44045 Riverside Pkwy, Leesburg, VA 20176. The listed phone number is (703) 858-6000.
What is Alyson Severino's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Alyson Severino enrolled in Medicare?
Yes. Alyson Severino 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 Alyson Severino's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alyson Severino reassigns Medicare benefits to 3 organizations: Inova Health Care Services (Vienna, VA), Washington Hospital Center Corp (Washington, DC) and Commonwealth Critical Care LLC (Alexandria, 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 Alyson Severino's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alyson Severino accept?
Health plans from Oscar Health list Alyson Severino 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.
Is Alyson Severino affiliated with any hospitals?
According to CMS data, Alyson Severino is affiliated with Inova Loudoun Hospital.
When was this NPI record last updated?
The NPPES record for Alyson Severino was last updated on July 18, 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.
# Alyson R Severino, ACNP · NPI 1437418563
Nurse Practitioner physician in Leesburg, Virginia. Individual provider, active in the CMS NPPES registry since May 9, 2012.
## Identity
- **NPI:** 1437418563 (Entity type: Individual)
- **Enumerated:** May 9, 2012
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 0024176872 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 44045 RIVERSIDE PKWY, Leesburg, VA 20176-5101
- **Phone:** (703) 858-6000 · **Fax:** (703) 858-6900
## 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 Health Care Services (NPI 1275886418, Vienna, VA); Washington Hospital Center Corp (NPI 1376627406, Washington, DC); Commonwealth Critical Care LLC (NPI 1891210035, Alexandria, VA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Johns Hopkins University School Of Medicine, class of 2011
## Record status
- **NPPES last updated:** July 18, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1437418563) · Data from the CMS NPPES public registry.