Catherine Williams
NPI 1477921534 · Nephrology Registered Nurse · North Baldwin, NY
Catherine Williams is a Nephrology Registered Nurse provider in North Baldwin, NY (NPI 1477921534).
Provider details
- NPI number
- 1477921534
- Entity type
- Individual
- Primary specialty
- Nephrology Registered NurseNursing Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 322793 (NY)
Specialties & taxonomies
Nursing Service Providers
Nursing Service Providers
Nursing Service Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
Mailing address
Registry dates
- Enumerated
- 2015-09-07
- Last updated
- 2026-05-17
Frequently asked questions
- What is Catherine Williams's NPI number?
- Catherine Williams's National Provider Identifier (NPI) is 1477921534, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Williams's specialty?
- Catherine Williams is listed in the NPPES registry with a primary specialty of Nephrology Registered Nurse (Nursing Service Providers).
- Where is Catherine Williams located?
- Catherine Williams's practice location on file with NPPES is 1861 Grand Ave Apt A5, North Baldwin, NY 11510-2412.
- What is Catherine Williams's phone number?
- The practice phone number listed in the NPPES registry for Catherine Williams is (516) 459-5266.
- Is Catherine Williams's NPI active?
- Yes — Catherine Williams's NPI (1477921534) is active in the NPPES registry as of the last update on 2026-05-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.