SOUTH ISLAND GASTROENTEROLOGY ASSOCIATES PC
NPI 1043628282
Internal Medicine - Gastroenterology in Lawrence, NY
About South Island Gastroenterology Associates Pc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SOUTH ISLAND GASTROENTEROLOGY ASSOCIATES PC (NPI 1043628282) is a healthcare organization registered as a gastroenterology in Lawrence, New York and active in the NPI registry since July 2014. The organization lists Steven L Kadish, Physician / Owner - Incorporator, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
South Island Gastroenterology Associates Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
30Medicare enrollment records show 30 clinicians reassign Medicare billing to South Island Gastroenterology Associates PC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 9 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 4
Nearest to this location (20)
See all 30Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is South Island Gastroenterology Associates PC's NPI number?
The NPI number for South Island Gastroenterology Associates PC is 1043628282. It was assigned to this organization in the NPPES registry on July 31, 2014.
Where is South Island Gastroenterology Associates PC located?
South Island Gastroenterology Associates PC is located at 141 Washington Ave, Lawrence, NY 11559. The listed phone number is (516) 650-4604.
What is South Island Gastroenterology Associates PC's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is South Island Gastroenterology Associates PC enrolled in Medicare?
Yes. South Island Gastroenterology Associates PC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through South Island Gastroenterology Associates PC?
According to the CMS Revalidation Reassignment List (October 2026 release), 30 clinicians in 4 Medicare specialties reassign their Medicare billing to South Island Gastroenterology Associates PC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Anesthesiology (19), Certified Registered Nurse Anesthetist (CRNA) (5) and Pathology (4). Of these, 1 practice at this address and 9 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for South Island Gastroenterology Associates PC was last updated on July 31, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# South Island Gastroenterology Associates Pc · NPI 1043628282
Gastroenterology organization in Lawrence, New York. Organization record, active in the CMS NPPES registry since July 31, 2014.
## Identity
- **NPI:** 1043628282 (Entity type: Organization)
- **Enumerated:** July 31, 2014
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **Organization subpart:** No
- **Authorized official:** Steven Kadish, PHYSICIAN / OWNER - INCORPORATOR
## Practice location
- **Address:** 141 WASHINGTON AVE, Lawrence, NY 11559-1669
- **Phone:** (516) 650-4604 · **Fax:** (800) 557-3140
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 30 clinicians in 4 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Anesthesiology (19), Certified Registered Nurse Anesthetist (CRNA) (5), Pathology (4); 1 practice at this address and 9 within 10 miles; [full list](https://npiprofile.com/npi/1043628282/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 31, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1043628282) · Data from the CMS NPPES public registry.