CATHERINE NJIRU-SEWER D.O.
NPI 1063914836
Family Medicine in West River, MD
About Catherine Njiru-sewer D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CATHERINE NJIRU-SEWER D.O. (NPI 1063914836) is an individual family medicine provider in West River, Maryland, licensed in District Of Columbia (DO035003) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS and is a graduate of Edward Via Col Of Osteo Medicine-virginia Campus (2018).
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 and accepts Medicare assignment
Catherine Njiru-sewer 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
3Medicare enrollment records show Catherine Njiru-sewer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
West River, MD 20778
- Reassigned Medicare billing, Maryland enrollment
- 8 clinicians in this Medicare group
Wheaton, MD 20902
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 309 clinicians in this Medicare group
Dallas, TX 75244
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 75 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 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20778 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
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 14
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 Catherine Njiru-sewer's NPI number?
The NPI number for Catherine Njiru-sewer is 1063914836. It was assigned to this individual provider in the NPPES registry on March 7, 2018.
Where is Catherine Njiru-sewer located?
Catherine Njiru-sewer practices at 134 Owensville Rd, West River, MD 20778. The listed phone number is (410) 867-4700.
What is Catherine Njiru-sewer's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Catherine Njiru-sewer enrolled in Medicare?
Yes. Catherine Njiru-sewer 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 Catherine Njiru-sewer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Njiru-sewer reassigns Medicare benefits to 3 organizations: Owensville Primary Care, Inc (West River, MD), Medstar Urgent Care, LLC (Wheaton, MD) and Signify Health Medical Associates, PLLC (Dallas, TX). 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 Catherine Njiru-sewer'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 Catherine Njiru-sewer was last updated on August 13, 2024. 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.
# Catherine Njiru-Sewer, D.O. · NPI 1063914836
Family Medicine physician in West River, Maryland. Individual provider, active in the CMS NPPES registry since March 7, 2018.
## Identity
- **NPI:** 1063914836 (Entity type: Individual)
- **Enumerated:** March 7, 2018
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** DO035003 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 134 OWENSVILLE RD, West River, MD 20778-9702
- **Phone:** (410) 867-4700
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Owensville Primary Care, Inc (NPI 1225110067, West River, MD); Medstar Urgent Care, LLC (NPI 1871843409, Wheaton, MD); Signify Health Medical Associates, PLLC (NPI 1750845863, Dallas, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Edward Via Col Of Osteo Medicine-Virginia Campus, class of 2018
## Record status
- **NPPES last updated:** August 13, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1063914836) · Data from the CMS NPPES public registry.