MAIN STREET RADIOLOGY AT BAYSIDE LLC
NPI 1598852469
Radiology - Diagnostic Radiology in Bayside, NY

Active since October 10, 2006CLIA Certified · 4 labs
4401 FRANCIS LEWIS BLVD, BAYSIDE, NY 11361(718) 428-1500(718) 352-0292 Get Directions Write a Review

NPPES record last updated: November 3, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Main Street Radiology At Bayside Llc NPPES

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

MAIN STREET RADIOLOGY AT BAYSIDE LLC (NPI 1598852469) is a healthcare organization registered as a diagnostic radiology in Bayside, New York and active in the NPI registry since October 2006. The organization holds 4 active CLIA laboratory certificates and lists Ari Jonisch, Officer, as its authorized official.

NPPES Registry Identity

NPI1598852469
Entity TypeOrganization
Primary Taxonomy2085R0202X
Legal Business NameMAIN STREET RADIOLOGY AT BAYSIDE LLC
Location Address4401 FRANCIS LEWIS BLVDBayside, NY 11361-3002
Mailing Address3211 Francis Lewis BlvdFlushing, NY 11358-1922 · (718) 352-9850 · Fax (718) 352-0102
Fax(718) 352-0292
Organization SubpartNo
Authorized OfficialAri JonischOfficer · (718) 428-1500
Enumeration DateOctober 10, 2006
Last NPPES UpdateNovember 3, 2022
NPPES CertifiedNovember 3, 2022
✔ NPI 1598852469 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
4401 FRANCIS LEWIS BLVD, Bayside, NY 11361

Other Identifiers 1

Medicaid02217256NY

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Main Street Radiology At Bayside Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

71

Medicare enrollment records show 71 clinicians reassign Medicare billing to Main Street Radiology At Bayside LLC, which bills Medicare for the services they deliver. Of these, 46 practice within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 4

Diagnostic Radiology62
Interventional Radiology6
Cardiovascular Disease (Cardiology)2
Internal Medicine1

Nearest to this location (20)

See all 71
Diagnostic Radiology
NPI 1841466042
32-25 FRANCIS LEWIS BLVD
Bayside, NY 11358
(718) 428-1500
✔ PECOS0.9 mi
Diagnostic Radiology
NPI 1588058630
3225 FRANCIS LEWIS BLVD
Flushing, NY 11358
(718) 428-1500
✔ PECOS✔ Accepts Medicare0.9 mi
Diagnostic Radiology
NPI 1265693246
3225 FRANCIS LEWIS BLVD
Flushing, NY 11358
(718) 428-1500
✔ PECOS✔ Accepts Medicare0.9 mi
Diagnostic Radiology
NPI 1649705864
3225 FRANCIS LEWIS BLVD
Flushing, NY 11358
(718) 670-1888
✔ PECOS✔ Accepts Medicare0.9 mi
Internal Medicine
NPI 1770563538
21406 16TH AVE
Bayside, NY 11360
(718) 224-3734
✔ PECOS✔ Accepts Medicare2.0 mi
Diagnostic Radiology
NPI 1902092927
5645 MAIN ST DEPARTMENT OF RADIOLOGY, NYHQ
Flushing, NY 11355
(718) 670-1594
✔ PECOS✔ Accepts Medicare2.3 mi
Diagnostic Radiology
NPI 1245293422
5645 MAIN ST
Flushing, NY 11355
(718) 670-1594
✔ PECOS✔ Accepts Medicare2.3 mi
Diagnostic Radiology
NPI 1124081302
5645 MAIN ST
Flushing, NY 11355
(718) 670-1594
✔ PECOS✔ Accepts Medicare2.3 mi
Diagnostic Radiology
NPI 1427252261
5645 MAIN ST
Flushing, NY 11355
(718) 670-1050
✔ PECOS✔ Accepts Medicare2.3 mi
Diagnostic Radiology
NPI 1841253606
5645 MAIN ST
Flushing, NY 11355
(718) 670-1594
✔ PECOS✔ Accepts Medicare2.3 mi
Diagnostic Radiology
NPI 1376506139
5645 MAIN ST
Flushing, NY 11355
(718) 670-1594
✔ PECOS✔ Accepts Medicare2.3 mi
Diagnostic Radiology
NPI 1164485934
5645 MAIN ST
Flushing, NY 11355
(718) 670-1594
✔ PECOS✔ Accepts Medicare2.3 mi
Diagnostic Radiology
NPI 1144283946
5645 MAIN ST
Flushing, NY 11355
(718) 670-1594
✔ PECOS✔ Accepts Medicare2.3 mi
Diagnostic Radiology
NPI 1255394433
5645 MAIN ST
Flushing, NY 11355
(718) 670-1594
✔ PECOS✔ Accepts Medicare2.3 mi
Diagnostic Radiology
NPI 1356509707
5645 MAIN ST NEW YORK HOSPITAL QUEENS, DEPARTMENT OF RADIOLOGY
Flushing, NY 11355
(718) 670-2526
✔ PECOS✔ Accepts Medicare2.3 mi
Diagnostic Radiology
NPI 1215990023
5645 MAIN ST
Flushing, NY 11355
(718) 670-1594
✔ PECOS✔ Accepts Medicare2.3 mi
Diagnostic Radiology
NPI 1619930732
5645 MAIN ST
Flushing, NY 11355
(718) 670-1594
✔ PECOS✔ Accepts Medicare2.3 mi
Diagnostic Radiology
NPI 1932162690
5645 MAIN ST
Flushing, NY 11355
(718) 670-1594
✔ PECOS✔ Accepts Medicare2.3 mi
Cardiovascular Disease (Cardiology)
NPI 1144220674
5645 MAIN ST
Flushing, NY 11355
(718) 670-2000
✔ PECOS✔ Accepts Medicare2.4 mi
Cardiovascular Disease (Cardiology)
NPI 1013179050
10250 62ND RD APT 3G
Forest Hills, NY 11375
(917) 685-0804
✔ PECOS✔ Accepts Medicare4.0 mi
See all 71 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 4

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 33D2256204

Main Street Radiology · Glendale, NY
Active · expires Mar 26, 2027
CLIA Number33D2256204
Laboratory TypeRadiology
Certificate Effective DateMarch 22, 2022
Certificate Expiration DateMarch 26, 2027
Laboratory DirectorDr. Ari Jonisch
Laboratory Phone(718) 428-1500
Laboratory LocationMain Street Radiology83-14 Cooper Ave, Glendale, NY 11385
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 33D2256279

Main Street Radiology · Jackson Heights, NY
Active · expires Mar 26, 2027
CLIA Number33D2256279
Laboratory TypeRadiology
Certificate Effective DateMarch 22, 2022
Certificate Expiration DateMarch 26, 2027
Laboratory DirectorDr. Ari Jonisch
Laboratory Phone(718) 428-1500
Laboratory LocationMain Street Radiology72-06 Northern Blvd, Jackson Heights, NY 11372
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 33D2256995

Main Street Radiology At Bayside LLC · Flushing, NY
Active · expires Mar 26, 2027
CLIA Number33D2256995
Laboratory TypeDiagnostic And Treatment
Certificate Effective DateMarch 30, 2022
Certificate Expiration DateMarch 26, 2027
Laboratory DirectorAri I. Jonisch
Laboratory Phone(718) 428-1500
Laboratory LocationMain Street Radiology At Bayside LLC136-25 37th Avenue, Flushing, NY 11354
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 33D2256183

Main Street Radiology Bayside · Flushing, NY
Active · expires Mar 26, 2027
CLIA Number33D2256183
Laboratory TypeRadiology
Certificate Effective DateMarch 22, 2022
Certificate Expiration DateMarch 26, 2027
Laboratory DirectorDr. Ari I. Jonisch
Laboratory Phone(718) 428-1500
Laboratory LocationMain Street Radiology Bayside32-25 Francis Lewis Blvd, Flushing, NY 11358
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Main Street Radiology At Bayside LLC's NPI number?

The NPI number for Main Street Radiology At Bayside LLC is 1598852469. It was assigned to this organization in the NPPES registry on October 10, 2006.

Where is Main Street Radiology At Bayside LLC located?

Main Street Radiology At Bayside LLC is located at 4401 Francis Lewis Blvd, Bayside, NY 11361. The listed phone number is (718) 428-1500.

What is Main Street Radiology At Bayside LLC's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Main Street Radiology At Bayside LLC enrolled in Medicare?

Yes. Main Street Radiology At Bayside LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Main Street Radiology At Bayside LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 71 clinicians in 4 Medicare specialties reassign their Medicare billing to Main Street Radiology At Bayside 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. The largest specialties are Diagnostic Radiology (62), Interventional Radiology (6) and Cardiovascular Disease (Cardiology) (2). Of these, 46 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Main Street Radiology At Bayside LLC hold CLIA laboratory certificates?

Yes. 4 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

When was this NPI record last updated?

The NPPES record for Main Street Radiology At Bayside LLC was last updated on November 3, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.