DR. MARIAN VERNETTE WILLERTH MITCHELL D.O.
NPI 1992149827
Family Medicine in Ashburn, VA
About Dr. Marian Vernette Willerth Mitchell D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARIAN VERNETTE WILLERTH MITCHELL D.O. (NPI 1992149827) is an individual family medicine provider in Ashburn, Virginia, licensed in Virginia (0102204428) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS, is affiliated with Inova Loudoun Hospital, and is a graduate of Lake Erie College Of Osteopathic Medicine, Erie (2013).
NPPES Registry Identity
Specialties & Licenses 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
Dr. Marian Vernette Willerth Mitchell D.o. 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 Marian Mitchell reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chantilly, VA 20151
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 379 clinicians in this Medicare group
Vienna, VA 22180
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 160 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Inova Loudoun Hospital
Acute Care Hospitals · Leesburg, VAInova Fair Oaks Hospital
Acute Care Hospitals · Fairfax, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20147 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ASHBURN, VA 20147
ASHBURN, VA 20147
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 Marian Mitchell's NPI number?
The NPI number for Marian Mitchell is 1992149827. It was assigned to this individual provider in the NPPES registry on April 22, 2013.
Where is Marian Mitchell located?
Marian Mitchell practices at 21785 Filigree Ct, Ashburn, VA 20147. The listed phone number is (703) 554-1130.
What is Marian Mitchell's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Marian Mitchell enrolled in Medicare?
Yes. Marian Mitchell 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 Marian Mitchell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marian Mitchell reassigns Medicare benefits to 2 organizations: Inova Physician Partners, LLC (Chantilly, VA) and Inova Health Care Services (Vienna, 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 Marian Mitchell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marian Mitchell accept?
Health plans from Oscar Health list Marian Mitchell 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 Marian Mitchell affiliated with any hospitals?
According to CMS data, Marian Mitchell is affiliated with Inova Loudoun Hospital and Inova Fair Oaks Hospital.
When was this NPI record last updated?
The NPPES record for Marian Mitchell was last updated on November 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Marian Vernette Willerth Mitchell, D.O. · NPI 1992149827
Family Medicine physician in Ashburn, Virginia. Individual provider, active in the CMS NPPES registry since April 22, 2013.
## Identity
- **NPI:** 1992149827 (Entity type: Individual)
- **Enumerated:** April 22, 2013
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 0102204428 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 21785 FILIGREE CT, Ashburn, VA 20147-6213
- **Phone:** (703) 554-1130
## 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): Inova Physician Partners, LLC (NPI 1215264916, Chantilly, VA); Inova Health Care Services (NPI 1275886418, Vienna, VA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Lake Erie College Of Osteopathic Medicine, Erie, class of 2013
## Record status
- **NPPES last updated:** November 27, 2023
---
Source: [NPI Profile](https://npiprofile.com/npi/1992149827) · Data from the CMS NPPES public registry.