Catherine Njiru-Sewer, D.O.
NPI 1063914836 · Family Medicine Physician · West River, MD
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine Njiru-Sewer, D.O. is a Family Medicine Physician provider in West River, MD (NPI 1063914836).
Provider details
- NPI number
- 1063914836
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- DO035003 (DC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
49 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Blood Glucose (sugar) Test Performed By Hand-Held Instrument82962 | 33 | $3 |
| Hemoglobin A1c Level83036 | 16 | $10 |
Typical Medicare-allowed amounts for these services range $3–$10 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 71 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 290 | 127 |
| Amlodipine Besylate | 222 | 105 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 176 | 50 |
| Losartan Potassium | 138 | 61 |
| Diclofenac Sodium | 127 | 30 |
| Lisinopril | 122 | 54 |
| Dulaglutide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$31 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-03-07
- Last updated
- 2024-08-13
- Certified
- 2024-08-13
Frequently asked questions
- What is Catherine Njiru-Sewer's NPI number?
- Catherine Njiru-Sewer's National Provider Identifier (NPI) is 1063914836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Njiru-Sewer's specialty?
- Catherine Njiru-Sewer is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Catherine Njiru-Sewer located?
- Catherine Njiru-Sewer's practice location on file with NPPES is 134 Owensville Rd, West River, MD 20778-9702.
- What is Catherine Njiru-Sewer's phone number?
- The practice phone number listed in the NPPES registry for Catherine Njiru-Sewer is (410) 867-4700.
- Does Catherine Njiru-Sewer accept Medicare?
- Catherine Njiru-Sewer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine Njiru-Sewer's NPI active?
- Yes — Catherine Njiru-Sewer's NPI (1063914836) is active in the NPPES registry as of the last update on 2024-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.