GASTROINTESTINAL SPECIALIST OF LONG ISLAND, P.C.
NPI 1538242565
Specialist in Wantagh, NY
About Gastrointestinal Specialist Of Long Island, P.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GASTROINTESTINAL SPECIALIST OF LONG ISLAND, P.C. (NPI 1538242565) is a healthcare organization registered as a specialist in Wantagh, New York and active in the NPI registry since October 2006. The organization holds a CLIA Waiver certificate valid through August 31, 2028 and lists Arthur Boshnack, Owner/president, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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)
Gastrointestinal Specialist Of Long Island, P.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
2Medicare enrollment records show 2 clinicians reassign Medicare billing to Gastrointestinal Specialist Of Long Island, P.C., which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.
Clinicians, nearest first (2)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Waiver 33D0159800
Gastrointestinal Specialist Of Long Island PC · Wantagh, NYFrequently 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 Gastrointestinal Specialist Of Long Island, P.C.'s NPI number?
The NPI number for Gastrointestinal Specialist Of Long Island, P.C. is 1538242565. It was assigned to this organization in the NPPES registry on October 23, 2006.
Where is Gastrointestinal Specialist Of Long Island, P.C. located?
Gastrointestinal Specialist Of Long Island, P.C. is located at 3019 Merrick Rd, Wantagh, NY 11793. The listed phone number is (516) 785-8075.
What is Gastrointestinal Specialist Of Long Island, P.C.'s specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Gastrointestinal Specialist Of Long Island, P.C. enrolled in Medicare?
Yes. Gastrointestinal Specialist Of Long Island, P.C. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Gastrointestinal Specialist Of Long Island, P.C.?
According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Gastroenterology, reassign their Medicare billing to Gastrointestinal Specialist Of Long Island, P.C.. 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. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Gastrointestinal Specialist Of Long Island, P.C. hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 33D0159800) is associated with this NPI, valid through August 31, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Gastrointestinal Specialist Of Long Island, P.C. was last updated on February 21, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Gastrointestinal Specialist Of Long Island, P.c. · NPI 1538242565
Specialist organization in Wantagh, New York. Organization record, active in the CMS NPPES registry since October 23, 2006.
## Identity
- **NPI:** 1538242565 (Entity type: Organization)
- **Enumerated:** October 23, 2006
- **Primary specialty:** Specialist · taxonomy 174400000X
- **Organization subpart:** No
- **Authorized official:** Arthur Boshnack, OWNER/PRESIDENT
## Practice location
- **Address:** 3019 MERRICK RD, Wantagh, NY 11793-4329
- **Phone:** (516) 785-8075 · **Fax:** (516) 785-8139
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 2 clinicians (Gastroenterology) reassign Medicare billing to this organization (form CMS-855R); 2 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 21, 2008
- **Other identifiers:** Medicare PIN WZ23XX10 (NY)
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1538242565) · Data from the CMS NPPES public registry.