IndividualActive
John Gasiewski, LCSW
NPI 1538246137 · Clinical Social Worker · Summit, NJ
John Gasiewski, LCSW is a Clinical Social Worker provider in Summit, NJ (NPI 1538246137).
Provider details
- NPI number
- 1538246137
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- No
- License
- 44SC05311900 (NJ)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 index)
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
99 Beauvoir Ave
Overlook Hospital
Summit, NJ 07901-3533
Phone: (908) 522-2970
Fax: (908) 522-4888
Street-level locationGet directions
Mailing address
25 Lindsley Dr Ste 100
Morristown, NJ 07960-4456
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2010-03-11
Frequently asked questions
- What is John Gasiewski's NPI number?
- John Gasiewski's National Provider Identifier (NPI) is 1538246137, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Gasiewski's specialty?
- John Gasiewski is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is John Gasiewski located?
- John Gasiewski's practice location on file with NPPES is 99 Beauvoir Ave, Summit, NJ 07901-3533.
- What is John Gasiewski's phone number?
- The practice phone number listed in the NPPES registry for John Gasiewski is (908) 522-2970.
- Is John Gasiewski's NPI active?
- Yes — John Gasiewski's NPI (1538246137) is active in the NPPES registry as of the last update on 2010-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.