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GREAT SOUTH BAY ENDOSCOPY CENTER, LLC
NPI 1366864514
Clinic/Center - Ambulatory Surgical in East Patchogue, NY

Active since January 07, 2014CLIA 33D2074874 · Waiver
260 PATCHOGUE YAPHANK RD, SUITE C, EAST PATCHOGUE, NY 11772(631) 307-9181(631) 312-9187 Get Directions Write a Review

NPPES record last updated: November 4, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 4, 2025, Apr 20, 2020, Jan 7, 2020 (3 updates tracked since 2020).

About Great South Bay Endoscopy Center, Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREAT SOUTH BAY ENDOSCOPY CENTER, LLC (NPI 1366864514) is a healthcare organization registered as an ambulatory surgical in East Patchogue, New York and active in the NPI registry since January 2014. The organization holds a CLIA Waiver certificate valid through March 26, 2027 and lists Alicia Mohan, Administrator, as its authorized official.

NPPES Registry Identity

NPI1366864514
Entity TypeOrganization
Primary Taxonomy261QA1903X
Legal Business NameGREAT SOUTH BAY ENDOSCOPY CENTER, LLC
Location Address260 PATCHOGUE YAPHANK RD, SUITE CEast Patchogue, NY 11772-4886
Mailing Address260 Patchogue Yaphank Rd Ste CEast Patchogue, NY 11772-4886 · (631) 307-9181 · Fax (631) 312-9187
Phone(631) 307-9181
Fax(631) 312-9187
Organization SubpartNo
Authorized OfficialAlicia MohanAdministrator · (631) 307-9181
Enumeration DateJanuary 7, 2014
Last NPPES UpdateNovember 4, 20253 updates tracked since enumeration
NPPES CertifiedNovember 4, 2025
✔ NPI 1366864514 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Ambulatory SurgicalAmbulatory Health Care Facilities
Taxonomy Code261QA1903X
260 PATCHOGUE YAPHANK RD, East Patchogue, NY 11772
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Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Great South Bay Endoscopy Center, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

29

Medicare enrollment records show 29 clinicians reassign Medicare billing to Great South Bay Endoscopy Center, LLC, which bills Medicare for the services they deliver. Listed here are the 20 practicing nearest to this location.

Nearest to this location (20)

See all 29
Christopher Page, M.D.
Anesthesiology
NPI 1568663862
OF ANESTHESIOLOGY STONY BROOK UNIV HSC, LEVEL 4, ROOM 060
Stony Brook, NY 11794
(631) 444-2975
✔ PECOS12 mi
Andrew Bogart, MD
Anesthesiology
NPI 1497009849
125 KENNEDY DR STE 300
Hauppauge, NY 11788
(934) 223-4500
✔ PECOS✔ Accepts Medicare14 mi
Richard Sobotka, D.O.
Anesthesiology
NPI 1578663134
301 E MAIN ST ANESTHESIA DEPARTMENT
Bay Shore, NY 11706
(631) 968-3162
✔ PECOS✔ Accepts Medicare14 mi
Michael Rus, M.D.
Anesthesiology
NPI 1376528828
7 LORRAINE CT
Smithtown, NY 11787
(631) 813-8216
✔ PECOS15 mi
Joshua Pearlman, MD
Anesthesiology
NPI 1124098751
270 PARK AVE
Huntington, NY 11743
(631) 351-2785
✔ PECOS✔ Accepts Medicare24 mi
Roberto Rappa, M.D.
Anesthesiology
NPI 1851597025
270 PARK AVE DEPT OF ANESTHESIA
Huntington, NY 11743
(631) 351-2785
✔ PECOS✔ Accepts Medicare24 mi
Anthony Schwagerl, MD
Anesthesiology
NPI 1841441979
777 ZECKENDORF BLVD
Garden City, NY 11530
(516) 832-8870
✔ PECOS✔ Accepts Medicare33 mi
Heath Blonder, D.O.
Anesthesiology
NPI 1396757985
110 WILLIS AVE
Mineola, NY 11501
(516) 294-0030
✔ PECOS✔ Accepts Medicare35 mi
Sreekumar Nair, M.D
Anesthesiology
NPI 1639496748
318 HILLSIDE DR S
New Hyde Park, NY 11040
(516) 747-0718
✔ PECOS✔ Accepts Medicare36 mi
Valerie Makarick, MD
Anesthesiology
NPI 1316027576
100 PORT WASHINGTON BLVD
Roslyn, NY 11576
(516) 627-6624
✔ PECOS✔ Accepts Medicare36 mi
Joseph Woo, M.D.
Anesthesiology
NPI 1568882975
100 PORT WASHINGTON BLVD NEW YORK CARDIOVASCULAR ANESTHESIOLOGISTS, P.C.
Roslyn, NY 11576
(516) 627-6624
✔ PECOS✔ Accepts Medicare36 mi
Eva Chrysanthopoulos, D.O
Anesthesiology
NPI 1972731016
300 COMMUNITY DR DEPT OF ANESTHESIA
Manhasset, NY 11030
(516) 562-4887
✔ PECOS✔ Accepts Medicare38 mi
Victor Marino, MD
Anesthesiology
NPI 1972573434
210 WESTCHESTER AVE
White Plains, NY 10604
(914) 682-0700
✔ PECOS44 mi
Naixi Li, MD
Anesthesiology
NPI 1174670699
55 PALMER AVE
Bronxville, NY 10708
(914) 787-1000
✔ PECOS✔ Accepts Medicare47 mi
Kenneth Searles, MD
Anesthesiology
NPI 1508941998
MMC - DEPT. OF ANESTHESIOLOGY 111 EAST 210TH STREET
Bronx, NY 10467
(718) 920-4316
✔ PECOS48 mi
Christopher Arroyo, D.O.
Anesthesiology
NPI 1669407482
400 E MAIN ST ANESTHESIA ASSOCIATES OF MOUNT KISCO
Mount Kisco, NY 10549
(914) 666-4050
✔ PECOS✔ Accepts Medicare49 mi
Camille Stewart, M.D.
Anesthesiology
NPI 1720206303
127 S BROADWAY SAINT JOSEPH'S MEDICAL CENTER
Yonkers, NY 10701
(914) 378-7000
✔ PECOS✔ Accepts Medicare49 mi
Jaffer Mobeen, MD
Anesthesiology
NPI 1588619860
127 SOUTH BROADWAY ST. JOSEPHS MEDICAL CENTER
Yonkers, NY 10701
(914) 378-7000
✔ PECOS✔ Accepts Medicare49 mi
Chaitanya Kadiyala, M.D.
Anesthesiology
NPI 1881662922
374 STOCKHOLM ST C/O FACULTY PRACTICE
Brooklyn, NY 11237
(718) 963-6551
✔ PECOS✔ Accepts Medicare50 mi
Ruimin Zhang
Anesthesiology
NPI 1720062086
450 CLARKSON AVE
Brooklyn, NY 11203
(718) 270-3083
✔ PECOS✔ Accepts Medicare52 mi
See all 29 clinicians

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 33D2074874

Great South Bay Endoscopy Center LLC · East Patchogue, NY
Active · expires Mar 26, 2027
CLIA Number33D2074874
Laboratory TypeAmbulatory Surgery Center
Certificate Effective DateMarch 18, 2014
Certificate Expiration DateMarch 26, 2027
Laboratory DirectorDr. Ravi Singh
Laboratory Phone(631) 307-9181
Laboratory LocationGreat South Bay Endoscopy Center LLC260 Patchogue Yaphank Road - Suite C, East Patchogue, NY 11772
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
713 services704 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
634 services607 patients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
522 services513 patients
Colorectal cancer screening; colonoscopy on individual at high risk G0105
Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.
130 services129 patients
Diagnostic exam of large bowel using a flexible endoscope 45378
This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.
66 services66 patients
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121
Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.
56 services56 patients

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 Great South Bay Endoscopy Center, LLC's NPI number?

The NPI number for Great South Bay Endoscopy Center, LLC is 1366864514. It was assigned to this organization in the NPPES registry on January 7, 2014.

Where is Great South Bay Endoscopy Center, LLC located?

Great South Bay Endoscopy Center, LLC is located at 260 Patchogue Yaphank Rd Suite C, East Patchogue, NY 11772. The listed phone number is (631) 307-9181.

What is Great South Bay Endoscopy Center, LLC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Ambulatory Surgical, with taxonomy code 261QA1903X.

Is Great South Bay Endoscopy Center, LLC enrolled in Medicare?

Yes. Great South Bay Endoscopy Center, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Great South Bay Endoscopy Center, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 29 clinicians, all in Anesthesiology, reassign their Medicare billing to Great South Bay Endoscopy Center, LLC. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Great South Bay Endoscopy Center, LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 33D2074874) is associated with this NPI, valid through March 26, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Great South Bay Endoscopy Center, LLC was last updated on November 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.