Quick answers
- Which hospitals does Brennan Barrett work at?
- Medicare's official clinician data lists Brennan Barrett at 5 hospitals: AMITA Health Resurrection Medical Center, Holy Cross Hospital, Mt Sinai Hospital Medical Center, Presence Saints Mary and Elizabeth Medical Center and Saint Joseph Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Brennan Barrett see patients?
- Medicare's clinician data lists 3 practice locations, including Chicago, IL. Call before your visit to confirm the address.
- What is Brennan Barrett's specialty?
- Medicare lists Interventional Radiology as the primary specialty.
- Does Brennan Barrett accept Medicare assignment?
- Yes. Medicare's clinician data says Brennan Barrett 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 Brennan Barrett?
- (773) 962-3900, as listed in official Medicare / NPI Registry data.
- What is Brennan Barrett's NPI number?
- 1669847307. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Brennan Barrett works
Medicare's Facility Affiliation Data lists Brennan Barrett at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- AMITA Health Resurrection Medical CenterChicago, IL · Acute Care Hospital · CCN 140117
- Holy Cross HospitalChicago, IL · Acute Care Hospital · CCN 140133
- Mt Sinai Hospital Medical CenterChicago, IL · Acute Care Hospital · CCN 140018
- Presence Saints Mary and Elizabeth Medical CenterChicago, IL · Acute Care Hospital · CCN 140180
- Saint Joseph Medical CenterJoliet, IL · Acute Care Hospital · CCN 140007
Practice locations
Addresses where Brennan Barrett is enrolled with Medicare (CMS data updated 2026-10-02).
- 326 W 64th StChicago, IL 60621 (773) 962‑3900
- 645 S Central AveChicago, IL 60644 (773) 854‑5567
- California Ave at 15th StChicago, IL 60608 (773) 542‑2000
Group practices
Medicare enrollment lists Brennan Barrett as a member of these groups (CMS data updated 2026-10-02).
- Mount Sinai Community Foundation248 clinicians in the group
- St Bernard Hospital42 clinicians in the group
- Loretto Hospital40 clinicians in the group
Specialties
- Interventional Radiologyprimary
Other interventional radiologists in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2015 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669847307 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians