ANNABELLE WHITTICAR SIZEMORE PMHNP
NPI 1417799420
Nurse Practitioner - Psychiatric/Mental Health in Lansdowne, VA
About Annabelle Whitticar Sizemore Pmhnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANNABELLE WHITTICAR SIZEMORE PMHNP (NPI 1417799420) is an individual psychiatric/mental health provider in Lansdowne, Virginia, licensed in Virginia (0024189685) and active in the NPI registry since June 2024. She is enrolled in Medicare PECOS.
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 (PECOS)
Annabelle Whitticar Sizemore Pmhnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Annabelle Sizemore reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Winchester, VA 22602
- Reassigned Medicare billing, Virginia enrollment
- 756 clinicians in this Medicare group
Strasburg, VA 22657
- Reassigned Medicare billing, Virginia enrollment
- 416 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.
Physician 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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LANSDOWNE, VA 20176
LANSDOWNE, 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 Annabelle Sizemore's NPI number?
The NPI number for Annabelle Sizemore is 1417799420. It was assigned to this individual provider in the NPPES registry on June 10, 2024.
Where is Annabelle Sizemore located?
Annabelle Sizemore practices at 19440 Golf Vista Plz Ste 230, Lansdowne, VA 20176. The listed phone number is (571) 510-0607.
What is Annabelle Sizemore's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Annabelle Sizemore enrolled in Medicare?
Yes. Annabelle Sizemore is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Annabelle Sizemore's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Annabelle Sizemore reassigns Medicare benefits to 2 organizations: Winchester Medical Center (Winchester, VA) and Shenandoah Memorial Hospital, Inc. (Strasburg, 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 Annabelle Sizemore'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 Annabelle Sizemore was last updated on August 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 58 days 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.
# Annabelle Whitticar Sizemore, PMHNP · NPI 1417799420
Psychiatric/Mental Health physician in Lansdowne, Virginia. Individual provider, active in the CMS NPPES registry since June 10, 2024.
## Identity
- **NPI:** 1417799420 (Entity type: Individual)
- **Enumerated:** June 10, 2024
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** 0024189685 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 19440 GOLF VISTA PLZ STE 230, Lansdowne, VA 20176-8264
- **Phone:** (571) 510-0607
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Winchester Medical Center (NPI 1689463671, Winchester, VA); Shenandoah Memorial Hospital, Inc. (NPI 1710494331, Strasburg, VA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 27, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1417799420) · Data from the CMS NPPES public registry.