Quick answers
- Which hospitals does William Register work at?
- Medicare's official clinician data lists William Register at 3 hospitals: Alexian Brothers Medical Center 1, Saint Joseph Medical Center and St Alexius Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William Register see patients?
- Medicare's clinician data lists 3 practice locations, including Hoffman Estates, IL and Norridge, IL. Call before your visit to confirm the address.
- What is William Register's specialty?
- Medicare lists Critical Care (Intensivists) as the primary specialty.
- Does William Register accept Medicare assignment?
- Yes. Medicare's clinician data says William Register 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 William Register?
- (847) 685-6383, as listed in official Medicare / NPI Registry data.
- What is William Register's NPI number?
- 1912384306. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William Register works
Medicare's Facility Affiliation Data lists William Register at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alexian Brothers Medical Center 1Elk Grove Village, IL · Acute Care Hospital · CCN 140258
- Saint Joseph Medical CenterJoliet, IL · Acute Care Hospital · CCN 140007
- St Alexius Medical CenterHoffman Estates, IL · Acute Care Hospital · CCN 140290
Practice locations
Addresses where William Register is enrolled with Medicare (CMS data updated 2026-10-02).
- 1555 Barrington RdHoffman Estates, IL 60169 (847) 685‑6383
- 1555 N Barrington RdHoffman Estates, IL 60169 (847) 437‑5500
- 7001 W Cullom AveNorridge, IL 60706 (847) 252‑6090
Group practices
Medicare enrollment lists William Register as a member of this group (CMS data updated 2026-10-02).
- Alexian Brothers Medical Group Specialty Care21 clinicians in the group
Specialties
- Critical Care (Intensivists)primary
Find other Critical Care (Intensivists) doctors in Illinois →
Other critical care doctors in Hoffman Estates
Clinicians with the same Medicare primary specialty in Hoffman Estates, IL — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | University Of North Texas Hsc, College Of Osteopathic Med |
| Graduation year | 2015 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912384306 |
| 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