IndividualActive
Margaret Mary Onwu, RN
NPI 1023321643 · Registered Nurse · Brooklyn, NY
Margaret Mary Onwu, RN is a Registered Nurse provider in Brooklyn, NY (NPI 1023321643).
Provider details
- NPI number
- 1023321643
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- RN
- Sex
- Female
- Sole proprietor
- Yes
- License
- 613528 (NY)
Specialties & taxonomies
Nursing Service Providers
Profile Score
Detailed profile(83/100 index)
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
1 documented practice location
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.
Practice location
280 Shepherd Ave
Brooklyn, NY 11208-2302
Phone: (347) 328-5546
Street-level locationGet directions
Mailing address
Po Box 380486
Brooklyn, NY 11238-0486
Registry dates
- Enumerated
- 2010-07-24
- Last updated
- 2010-07-24
Frequently asked questions
- What is Margaret Mary Onwu's NPI number?
- Margaret Mary Onwu's National Provider Identifier (NPI) is 1023321643, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Mary Onwu's specialty?
- Margaret Mary Onwu is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Margaret Mary Onwu located?
- Margaret Mary Onwu's practice location on file with NPPES is 280 Shepherd Ave, Brooklyn, NY 11208-2302.
- What is Margaret Mary Onwu's phone number?
- The practice phone number listed in the NPPES registry for Margaret Mary Onwu is (347) 328-5546.
- Is Margaret Mary Onwu's NPI active?
- Yes — Margaret Mary Onwu's NPI (1023321643) is active in the NPPES registry as of the last update on 2010-07-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.