Southside Hospital
NPI 1184798977 · Primary Care Clinic/Center · Central Islip, NY
Southside Hospital is a Primary Care Clinic/Center organization in Central Islip, NY (NPI 1184798977).
Provider details
- NPI number
- 1184798977
- Entity type
- Organization
- Primary specialty
- Primary Care Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Douglas Riggs, Rpac(631) 853-2710
- License
- 006564-1 (NY)
Specialties & taxonomies
Ambulatory Health Care Facilities
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
Other names (DBA / former)
- Other name
- Central Islip Health Center
Registry dates
- Enumerated
- 2006-11-20
- Last updated
- 2020-08-22
Frequently asked questions
- What is Southside Hospital's NPI number?
- Southside Hospital's National Provider Identifier (NPI) is 1184798977, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Southside Hospital?
- Southside Hospital is classified in the NPPES registry as Primary Care Clinic/Center (Ambulatory Health Care Facilities).
- Where is Southside Hospital located?
- Southside Hospital's practice location on file with NPPES is 45 W Suffolk Ave, Central Islip, NY 11722-2143.
- What is Southside Hospital's phone number?
- The practice phone number listed in the NPPES registry for Southside Hospital is (631) 853-2710.
- Who is the authorized official for Southside Hospital?
- The authorized official listed on Southside Hospital's NPPES record is Douglas Riggs, Rpac. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Southside Hospital's NPI active?
- Yes — Southside Hospital's NPI (1184798977) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.