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

General Surgery

Brendan M. Marr, MD

Works at hospitals in Princeton, IL · Peru, IL · Illinois

Summary

Brendan M. Marr, MD (General Surgery) is listed by Medicare at 2 hospitals in Princeton, IL and Peru, IL. NPI 1437333630. 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 Brendan M. Marr, 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

General SurgeryPrimary specialty
YesAccepts Medicare assignment
20Years since medical school (graduated 2006)
Indiana University School Of MedicineMedical school
MaleGender (as listed)
OSF Multi-Specialty GroupGroup practice (+1 more)

Quick answers

Which hospitals does Brendan M. Marr work at?
Medicare's official clinician data lists Brendan M. Marr at 2 hospitals: OSF Saint Clare Medical Center and OSF Saint Elizabeth MDL Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Brendan M. Marr see patients?
Medicare's clinician data lists 2 practice locations, including Scottsdale, AZ and Peru, IL. Call before your visit to confirm the address.
What is Brendan M. Marr's specialty?
Medicare lists General Surgery as the primary specialty.
Does Brendan M. Marr accept Medicare assignment?
Yes. Medicare's clinician data says Brendan M. Marr 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 Brendan M. Marr?
(480) 882-7460, as listed in official Medicare / NPI Registry data.
What is Brendan M. Marr's NPI number?
1437333630. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Brendan M. Marr works

Medicare's Facility Affiliation Data lists Brendan M. Marr 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 Brendan M. Marr is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Brendan M. Marr as a member of these groups (CMS data updated 2026-10-02).

  • OSF Multi-Specialty Group2,114 clinicians in the group
  • HonorHealth Ambulatory630 clinicians in the group

Specialties

Find other General Surgery doctors in Arizona →

Other general surgeons in Scottsdale

Clinicians with the same Medicare primary specialty in Scottsdale, AZ — not a recommendation.

All general surgeons in Scottsdale →

Clinician information

CredentialMD
Medical schoolIndiana University School Of Medicine
Graduation year2006
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1437333630
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