Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Diagnostic Radiology

Guy Bassis, MD

Works at hospitals in West Islip, NY · New York

Summary

Guy Bassis, MD (Diagnostic Radiology) is listed by Medicare at 1 hospital in West Islip, NY. NPI 1598082570. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Guy Bassis, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Diagnostic RadiologyPrimary specialty
YesAccepts Medicare assignment
21Years since medical school (graduated 2005)
MaleGender (as listed)
Zwanger and Pesiri Radiology Group LLPGroup practice

Quick answers

Which hospitals does Guy Bassis work at?
Medicare's official clinician data lists Guy Bassis at 1 hospital: Good Samaritan Hospital Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Guy Bassis see patients?
Medicare's clinician data lists 1 practice location in Lindenhurst, NY. Call before your visit to confirm the address.
What is Guy Bassis's specialty?
Medicare lists Diagnostic Radiology as the primary specialty.
Does Guy Bassis accept Medicare assignment?
Yes. Medicare's clinician data says Guy Bassis accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Guy Bassis?
(631) 225-7200, as listed in official Medicare / NPI Registry data.
What is Guy Bassis's NPI number?
1598082570. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Guy Bassis works

Medicare's Facility Affiliation Data lists Guy Bassis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Guy Bassis is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Guy Bassis as a member of this group (CMS data updated 2026-10-02).

  • Zwanger and Pesiri Radiology Group LLP93 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in New York →

Other radiologists in Lindenhurst

Clinicians with the same Medicare primary specialty in Lindenhurst, NY — not a recommendation.

All radiologists in Lindenhurst →

Clinician information

CredentialMD
Graduation year2005
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1598082570
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians