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Diagnostic Radiology

Paul R. Fisher, MD

Works at hospitals in Stony Brook, NY · New York

Summary

Dr. Paul R. Fisher, MD is a radiologist at 100 Nicolls Rd, Stony Brook, NY 11794. Phone: (631) 638-2121. Accepts Medicare assignment. In 2024, Paul R. Fisher had 293 Original Medicare patients and 629 services. NPI 1821034547. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Radiologist (Medicare lists Diagnostic Radiology)
  • Address: 100 Nicolls Rd, Stony Brook, NY 11794 · Directions (2 more locations)
  • Phone: (631) 638‑2121
  • Medicare: Accepts Medicare assignment
  • Hospital: Suny/Stony Brook University Hospital
  • Group practice: Stony Brook Radiology, University Faculty Practice Corporation
  • Medical school: Georgetown University School Of Medicine · graduated 1982 (44 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Paul R. Fisher, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Paul R. Fisher accept Medicare assignment?
Yes. Medicare's clinician data says Paul R. Fisher accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Paul R. Fisher see?
In 2024, CMS data shows 293 Original Medicare patients and 629 services for Paul R. Fisher. This counts Original Medicare only and measures volume, not quality.
What is Paul R. Fisher's NPI number?
1821034547. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Paul R. Fisher, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients293
Services billed to Medicare629
Different services or procedures14
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Screening 3d breast mammography (77063)256 services
  2. Screening mammography (77067)256 services
  3. Complete ultrasound scan of 1 breast (76641)38 services
  4. Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)19 services
  5. Limited ultrasound scan of 1 breast (76642)16 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure67%
  • Arthritis46%
  • Osteoporosis35%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)26%
  • Diabetes23%

Hospitals where Paul R. Fisher works

Medicare's Facility Affiliation Data lists Paul R. Fisher at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Paul R. Fisher is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Paul R. Fisher as a member of this group (CMS data updated October 2, 2026).

  • Stony Brook Radiology, University Faculty Practice Corporation59 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in New York →

Other radiologists in Stony Brook

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

All radiologists in Stony Brook →

Other clinicians in Stony Brook Radiology, University Faculty Practice Corporation

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolGeorgetown University School Of Medicine
Graduation year1982 (44 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1821034547
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians