Margaret Schwiesow, D.O.
NPI 1346561610 · Gastroenterology Physician · Springfield, VA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Schwiesow, D.O. is a Gastroenterology Physician provider in Springfield, VA (NPI 1346561610).
Provider details
- NPI number
- 1346561610
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 0102204406 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 275 | 252 |
| Pantoprazole Sodium | 38 | 26 |
| Mesalamine | 35 | 11 |
| Tofacitinib Citratebrand: Xeljanz | 26 | — |
| Cholestyraminebrand: Cholestyramine Light | 20 | 13 |
| Azathioprine | 18 | — |
| Vedolizumabbrand: Entyvio Pen | 17 |
Practice location
Mailing address
Additional practice locations (1)
- 201 N Washington StFalls Church, VA 22046-4518Phone: (703) 237-4442
Registry dates
- Enumerated
- 2010-06-21
- Last updated
- 2021-05-27
- Certified
- 2021-05-27
Frequently asked questions
- What is Margaret Schwiesow's NPI number?
- Margaret Schwiesow's National Provider Identifier (NPI) is 1346561610, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Schwiesow's specialty?
- Margaret Schwiesow is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Schwiesow located?
- Margaret Schwiesow's practice location on file with NPPES is 6501 Loisdale Ct, Springfield, VA 22150-1826.
- What is Margaret Schwiesow's phone number?
- The practice phone number listed in the NPPES registry for Margaret Schwiesow is (703) 922-1313.
- Does Margaret Schwiesow accept Medicare?
- Margaret Schwiesow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Schwiesow's NPI active?
- Yes — Margaret Schwiesow's NPI (1346561610) is active in the NPPES registry as of the last update on 2021-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.