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Diagnostic Radiology

Moira A. Oriordan, MD

Works at hospitals in Bridgeport, CT · Connecticut

Summary

Dr. Moira A. Oriordan, MD is a radiologist at 1055 Post Rd, Fairfield, CT 06824. Phone: (203) 384-3873. Accepts Medicare assignment. In 2024, Moira A. Oriordan had 1,077 Original Medicare patients and 2,137 services. NPI 1831356591. 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: 1055 Post Rd, Fairfield, CT 06824 · Directions (3 more locations)
  • Phone: (203) 384‑3873
  • Medicare: Accepts Medicare assignment
  • Hospital: St Vincent's Medical Center
  • Group practice: Bridgeport Radiological Associates LLC (+2 more)
  • Medical school: University Of Chicago, Pritzker School Of Medicine · graduated 2006 (20 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Moira A. Oriordan, 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 Moira A. Oriordan accept Medicare assignment?
Yes. Medicare's clinician data says Moira A. Oriordan 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 Moira A. Oriordan see?
In 2024, CMS data shows 1,077 Original Medicare patients and 2,137 services for Moira A. Oriordan. This counts Original Medicare only and measures volume, not quality.
What is Moira A. Oriordan's NPI number?
1831356591. 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 Moira A. Oriordan, 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 patients1,077
Services billed to Medicare2,137
Different services or procedures21
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Screening 3d breast mammography (77063)599 services
  2. Screening mammography (77067)599 services
  3. Dxa bone density measurement of hip, pelvis, spine (77080)349 services
  4. Complete ultrasound scan of 1 breast (76641)126 services
  5. Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)118 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 pressure64%
  • Arthritis45%
  • Osteoporosis38%
  • Anxiety27%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)21%

Hospitals where Moira A. Oriordan works

Medicare's Facility Affiliation Data lists Moira A. Oriordan 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 Moira A. Oriordan is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Moira A. Oriordan as a member of these groups (CMS data updated October 2, 2026).

  • Bridgeport Radiological Associates LLC48 clinicians in the group
  • Advanced Radiology Consultants LLC33 clinicians in the group
  • Advanced Radiology Mri Centers LP22 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in Connecticut →

Other radiologists in Fairfield

Clinicians with the same Medicare primary specialty in Fairfield, CT — not a recommendation.

All radiologists in Fairfield →

Other clinicians in Bridgeport Radiological Associates LLC

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

Clinician information

CredentialMD
Medical schoolUniversity Of Chicago, Pritzker School Of Medicine
Graduation year2006 (20 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1831356591
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