MRS. MARGARET MOUNTCASTLE NP
NPI 1497753032
Nurse Practitioner - Family in Quinton, VA
About Mrs. Margaret Mountcastle Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. MARGARET MOUNTCASTLE NP (NPI 1497753032) is an individual family provider in Quinton, Virginia, licensed in Virginia (0024134081) and active in the NPI registry since July 2005. She is enrolled in Medicare PECOS, is affiliated with Sentara Williamsburg Regional Medical Center, and is a graduate of Virginia Commonwealth University, School Of Medicine (1997).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Mrs. Margaret Mountcastle Np 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 Margaret Mountcastle reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mechanicsville, VA 23116
- Reassigned Medicare billing, Virginia enrollment
- 31 clinicians in this Medicare group
Arlington, VA 22203
- Reassigned Medicare billing, Virginia enrollment
- 1,315 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 9
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Sentara Williamsburg Regional Medical Center
Acute Care Hospitals · Williamsburg, VABon Secours Memorial Regional Medical Center
Acute Care Hospitals · Mechanicsville, VABon Secours Richmond Community Hospital
Acute Care Hospitals · Richmond, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 23141 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 4
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 12
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 Margaret Mountcastle's NPI number?
The NPI number for Margaret Mountcastle is 1497753032. It was assigned to this individual provider in the NPPES registry on July 8, 2005.
Where is Margaret Mountcastle located?
Margaret Mountcastle practices at 1850 Pocahontas Trl, Quinton, VA 23141. The listed phone number is (804) 932-4388.
What is Margaret Mountcastle's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Margaret Mountcastle enrolled in Medicare?
Yes. Margaret Mountcastle 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 Margaret Mountcastle's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Mountcastle reassigns Medicare benefits to 2 organizations: Richmond Heart And Vascular Associates (Mechanicsville, 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 Margaret Mountcastle's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Margaret Mountcastle accept?
Health plans from Oscar Health list Margaret Mountcastle 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 Margaret Mountcastle affiliated with any hospitals?
According to CMS data, Margaret Mountcastle is affiliated with Sentara Williamsburg Regional Medical Center, Bon Secours Memorial Regional Medical Center and Bon Secours Richmond Community Hospital.
When was this NPI record last updated?
The NPPES record for Margaret Mountcastle was last updated on September 6, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Mrs. Margaret Mountcastle, NP · NPI 1497753032
Family physician in Quinton, Virginia. Individual provider, active in the CMS NPPES registry since July 8, 2005.
## Identity
- **NPI:** 1497753032 (Entity type: Individual)
- **Enumerated:** July 8, 2005
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 0024134081 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 1850 POCAHONTAS TRL, Quinton, VA 23141-1657
- **Phone:** (804) 932-4388 · **Fax:** (804) 932-9860
## 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): Richmond Heart And Vascular Associates (NPI 1508519745, Mechanicsville, 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 1997
## Record status
- **NPPES last updated:** September 6, 2011
- **Other identifiers:** Medicare UPIN S53033; Medicare ID-Type Unspecified 003803C61 (VA)
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Source: [NPI Profile](https://npiprofile.com/npi/1497753032) · Data from the CMS NPPES public registry.