Southeast Nassau Guidance Center
Southeast Nassau Guidance Center holds 5 active organization NPIs in the federal registry, with practice locations in 3 New York cities. 3 list community/behavioral health agency as their primary taxonomy; each location can bill under its own NPI.
Search the organization with your city to find the NPI for the location you visit or bill.
Find a location's NPISeaford has the most NPIs, 3
Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.
Most NPIs were issued in 2006 and 2009
Source: CMS NPPES, enumeration dates.
3 NPIs were issued in 2006 alone, more than in any other year; none in 2 of the years between.
Seaford locations
The city with the most Southeast Nassau Guidance Center NPIs. The full list of all 5 follows.
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1295745214 | 2146 JACKSON AVE, Seaford | Substance Use Disorder Rehabilitation Clinic/Center | Aug 9, 2006 |
| 1083718779 | 2146 JACKSON AVE, Seaford | Mental Health Clinic/Center (Including Community Mental Health Center) | Sep 12, 2006 |
| 1134455579 | 2146 JACKSON AVE, Seaford | Community/Behavioral Health Agency | Oct 20, 2009 |
All 5 locations, by city
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1982918587 | 3601 HEMPSTEAD TPKE SUITE 2A, Levittown | Community/Behavioral Health Agency | Aug 6, 2010 |
| 1295745214 | 2146 JACKSON AVE, Seaford | Substance Use Disorder Rehabilitation Clinic/Center | Aug 9, 2006 |
| 1083718779 | 2146 JACKSON AVE, Seaford | Mental Health Clinic/Center (Including Community Mental Health Center) | Sep 12, 2006 |
| 1134455579 | 2146 JACKSON AVE, Seaford | Community/Behavioral Health Agency | Oct 20, 2009 |
| 1124131461 | 3375 PARK AVE, Wantagh | Community/Behavioral Health Agency | Aug 17, 2006 |
Checking an organization
- Match the NPI to the exact location you will visit or bill; each location can have its own.
- Confirm the business entity with the secretary of state.
- Check the HHS-OIG exclusion list for the organization and its owners.
- Verify each clinician you will see on their own record and with the state license search.
Common questions
Why does Southeast Nassau Guidance Center have 5 NPIs?
An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. Southeast Nassau Guidance Center's NPIs list practice locations in 3 cities.
Is an organization NPI a license?
No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.
Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.