IndividualActive
Nicholas Sieban, LCSW
NPI 1750956728 · Clinical Social Worker · Baldwin, NY
Nicholas Sieban, LCSW is a Clinical Social Worker provider in Baldwin, NY (NPI 1750956728).
Provider details
- NPI number
- 1750956728
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 099487 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(62/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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
2277 Grand Ave
Baldwin, NY 11510-3148
Phone: (516) 377-5400
Street-level locationGet directions
Mailing address
244 E Main St Ste 119
East Islip, NY 11730-2712
Registry dates
- Enumerated
- 2021-05-23
- Last updated
- 2026-01-05
- Certified
- 2026-01-05
Frequently asked questions
- What is Nicholas Sieban's NPI number?
- Nicholas Sieban's National Provider Identifier (NPI) is 1750956728, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Sieban's specialty?
- Nicholas Sieban is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Nicholas Sieban located?
- Nicholas Sieban's practice location on file with NPPES is 2277 Grand Ave, Baldwin, NY 11510-3148.
- What is Nicholas Sieban's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Sieban is (516) 377-5400.
- Is Nicholas Sieban's NPI active?
- Yes — Nicholas Sieban's NPI (1750956728) is active in the NPPES registry as of the last update on 2026-01-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.