DR. MARGARET SCHWIESOW D.O.
NPI 1346561610
Internal Medicine - Gastroenterology in Springfield, VA
About Dr. Margaret Schwiesow D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARGARET SCHWIESOW D.O. (NPI 1346561610) is an individual gastroenterology provider in Springfield, Virginia, licensed in Virginia (0102204406) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS, is affiliated with Virginia Hospital Center, and maintains a secondary practice location in Falls Church.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Group Practice 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
Dr. Margaret Schwiesow 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 Reassignment
Medicare enrollment records show Margaret Schwiesow reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fairfax, VA 22033
- Reassigned Medicare billing, District of Columbia, Virginia and Maryland enrollments
- Also billed through NPI 1972275196 (Virginia), NPI 1073678637 (District of Columbia), NPI 1578638425 (District of Columbia), NPI 1366781700 (District of Columbia), NPI 1497023188 (District of Columbia), NPI 1285752121 (Maryland), NPI 1942546486 (Maryland), NPI 1457023616 (Maryland)
- 2,492 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.
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 22150 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.
SPRINGFIELD, VA 22150
SPRINGFIELD, VA 22150
SPRINGFIELD, VA 22150
SPRINGFIELD, VA 22150
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 Schwiesow's NPI number?
The NPI number for Margaret Schwiesow is 1346561610. It was assigned to this individual provider in the NPPES registry on June 21, 2010.
Where is Margaret Schwiesow located?
Margaret Schwiesow practices at 6501 Loisdale Ct, Springfield, VA 22150. The listed phone number is (703) 922-1313.
What is Margaret Schwiesow's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Margaret Schwiesow enrolled in Medicare?
Yes. Margaret Schwiesow 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 organization bills Medicare for Margaret Schwiesow's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Schwiesow reassigns Medicare benefits to Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Fairfax, VA). The 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 Schwiesow's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Margaret Schwiesow affiliated with any hospitals?
According to CMS data, Margaret Schwiesow is affiliated with Virginia Hospital Center.
When was this NPI record last updated?
The NPPES record for Margaret Schwiesow was last updated on May 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Margaret Schwiesow, D.O. · NPI 1346561610
Gastroenterology physician in Springfield, Virginia. Individual provider, active in the CMS NPPES registry since June 21, 2010.
## Identity
- **NPI:** 1346561610 (Entity type: Individual)
- **Enumerated:** June 21, 2010
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 0102204406 (Virginia)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 6501 LOISDALE CT, Springfield, VA 22150-1826
- **Phone:** (703) 922-1313
## 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:** Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (NPI 1215058326, Fairfax, VA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York College Of Osteo Medicine Of New York Institute Of Technology, class of 2010
## Record status
- **NPPES last updated:** May 27, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1346561610) · Data from the CMS NPPES public registry.