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Pathology

Marc M. Loriaux, MD

Works at hospitals in Portland, OR · Oregon

Summary

Dr. Marc M. Loriaux, MD is a pathologist at 15700 SW Greystone Ct, Beaverton, OR 97006. Phone: (503) 494-8311. Accepts Medicare assignment. In 2024, Marc M. Loriaux had 138 Original Medicare patients and 1,021 services. NPI 1215943824. 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: Pathologist (Medicare lists Pathology)
  • Address: 15700 SW Greystone Ct, Beaverton, OR 97006 · Directions (2 more locations)
  • Phone: (503) 494‑8311
  • Medicare: Accepts Medicare assignment
  • Hospital: OHSU Hospital and Clinics
  • Group practice: University Professional Services
  • Medical school: Oregon Health Sciences University School Of Medicine · graduated 1997 (29 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Marc M. Loriaux, 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 Marc M. Loriaux accept Medicare assignment?
Yes. Medicare's clinician data says Marc M. Loriaux 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 Marc M. Loriaux see?
In 2024, CMS data shows 138 Original Medicare patients and 1,021 services for Marc M. Loriaux. This counts Original Medicare only and measures volume, not quality.
What is Marc M. Loriaux's NPI number?
1215943824. 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 Marc M. Loriaux, 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 patients138
Services billed to Medicare1,021
Different services or procedures19
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Special stained specimen slides to examine tissue, each additional procedure (88341)295 services
  2. Pathology examination of tissue using a microscope, intermediate complexity (88305)157 services
  3. Flow cytometry technique for dna or cell analysis, 16 or more markers (88189)118 services
  4. Special stained specimen slides to examine tissue, initial procedure (88342)82 services
  5. Preparation of tissue for examination by removing any calcium present (88311)73 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 blood pressure65%
  • High cholesterol58%
  • Arthritis33%
  • Anxiety24%
  • Chronic kidney disease24%
  • Diabetes20%

Hospitals where Marc M. Loriaux works

Medicare's Facility Affiliation Data lists Marc M. Loriaux 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 Marc M. Loriaux is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Marc M. Loriaux as a member of this group (CMS data updated October 2, 2026).

  • University Professional Services1,724 clinicians in the group

Specialties

Find other Pathology doctors in Oregon →

Other pathologists in Beaverton

Clinicians with the same Medicare primary specialty in Beaverton, OR — not a recommendation.

All pathologists in Beaverton →

Other clinicians in University Professional Services

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

Clinician information

CredentialMD
Medical schoolOregon Health Sciences University School Of Medicine
Graduation year1997 (29 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1215943824
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