Niels Nielsen, LISW
NPI 1013040963 · Social Worker · Willoughby, OH
Niels Nielsen, LISW is a Social Worker provider in Willoughby, OH (NPI 1013040963).
Provider details
- NPI number
- 1013040963
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LISW
- Sex
- Male
- Sole proprietor
- No
- License
- I2504 (OH)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2007-03-13
- Last updated
- 2025-09-11
Frequently asked questions
- What is Niels Nielsen's NPI number?
- Niels Nielsen's National Provider Identifier (NPI) is 1013040963, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Niels Nielsen's specialty?
- Niels Nielsen is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Niels Nielsen located?
- Niels Nielsen's practice location on file with NPPES is 38879 Mentor Ave, Willoughby, OH 44094-7992.
- What is Niels Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Niels Nielsen is (440) 953-9999.
- Is Niels Nielsen's NPI active?
- Yes — Niels Nielsen's NPI (1013040963) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.