Quick answers
- Which hospitals does Brian Medernach work at?
- Medicare's official clinician data lists Brian Medernach at 4 hospitals: Advocate Good Samaritan Hospital, Alexian Brothers Medical Center 1, Loyola University Medical Center and St Alexius Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Brian Medernach see patients?
- Medicare's clinician data lists 2 practice locations, including Oak Brook, IL and Elk Grove Village, IL. Call before your visit to confirm the address.
- What is Brian Medernach's specialty?
- Medicare lists Infectious Disease as the primary specialty.
- Does Brian Medernach accept Medicare assignment?
- Medicare's clinician data says Brian Medernach may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Brian Medernach?
- (708) 361-5778, as listed in official Medicare / NPI Registry data.
- What is Brian Medernach's NPI number?
- 1801050539. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Brian Medernach works
Medicare's Facility Affiliation Data lists Brian Medernach at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Advocate Good Samaritan HospitalDowners Grove, IL · Acute Care Hospital · CCN 140288
- Alexian Brothers Medical Center 1Elk Grove Village, IL · Acute Care Hospital · CCN 140258
- Loyola University Medical CenterMaywood, IL · Acute Care Hospital · CCN 140276
- St Alexius Medical CenterHoffman Estates, IL · Acute Care Hospital · CCN 140290
Practice locations
Addresses where Brian Medernach is enrolled with Medicare (CMS data updated 2026-10-02).
- 5 Hunt Club LnOak Brook, IL 60523 (708) 361‑5778
- 800 Biesterfield RdElk Grove Village, IL 60007 (847) 981‑3694
Group practices
Medicare enrollment lists Brian Medernach as a member of these groups (CMS data updated 2026-10-02).
- Id Associates Limited6 clinicians in the group
- Infectious Diseases Associates PC4 clinicians in the group
Specialties
- Infectious Diseaseprimary
Other infectious disease doctors in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loyola University Of Chicago, Stritch School Of Medicine |
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1801050539 |
| 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