Quick answers
- Which hospitals does Michael J. Breen work at?
- Medicare's official clinician data lists Michael J. Breen at 5 hospitals: Advocate Condell Medical Center, Advocate Good Shepherd Hospital, Advocate Illinois Masonic Medical Center, Advocate Lutheran General Hospital and Northwestern Lake Forest Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael J. Breen see patients?
- Medicare's clinician data lists 1 practice location in Libertyville, IL. Call before your visit to confirm the address.
- What is Michael J. Breen's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Michael J. Breen accept Medicare assignment?
- Yes. Medicare's clinician data says Michael J. Breen 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.
- Does Michael J. Breen offer telehealth?
- Medicare's clinician data says Michael J. Breen offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Michael J. Breen?
- (847) 367-6781, as listed in official Medicare / NPI Registry data.
- What is Michael J. Breen's NPI number?
- 1669861449. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael J. Breen works
Medicare's Facility Affiliation Data lists Michael J. Breen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Advocate Condell Medical CenterLibertyville, IL · Acute Care Hospital · CCN 140202
- Advocate Good Shepherd HospitalBarrington, IL · Acute Care Hospital · CCN 140291
- Advocate Illinois Masonic Medical CenterChicago, IL · Acute Care Hospital · CCN 140182
- Advocate Lutheran General HospitalPark Ridge, IL · Acute Care Hospital · CCN 140223
- Northwestern Lake Forest HospitalLake Forest, IL · Acute Care Hospital · CCN 140130
Practice locations
Addresses where Michael J. Breen is enrolled with Medicare (CMS data updated 2026-10-02).
- 1800 Hollister Dr, Suite 112Libertyville, IL 60048 (847) 367‑6781
Group practices
Medicare enrollment lists Michael J. Breen as a member of this group (CMS data updated 2026-10-02).
- Advocate Health and Hospitals Corporation3,118 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Libertyville
Clinicians with the same Medicare primary specialty in Libertyville, IL — not a recommendation.
Clinician information
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1669861449 |
| 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