Quick answers
- Which hospitals does Allison L. Usher work at?
- Medicare's official clinician data lists Allison L. Usher at 2 hospitals: Advocate Christ Hospital & Medical Center and Northwest Community Hospital 1. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Allison L. Usher see patients?
- Medicare's clinician data lists 4 practice locations, including Evanston, IL, Downers Grove, IL and Oak Lawn, IL. Call before your visit to confirm the address.
- What is Allison L. Usher's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does Allison L. Usher accept Medicare assignment?
- Yes. Medicare's clinician data says Allison L. Usher 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 Allison L. Usher?
- (630) 852-9300, as listed in official Medicare / NPI Registry data.
- What is Allison L. Usher's NPI number?
- 1578385639. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Allison L. Usher works
Medicare's Facility Affiliation Data lists Allison L. Usher at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Advocate Christ Hospital & Medical CenterOak Lawn, IL · Acute Care Hospital · CCN 140208
- Northwest Community Hospital 1Arlington Heights, IL · Acute Care Hospital · CCN 140252
Practice locations
Addresses where Allison L. Usher is enrolled with Medicare (CMS data updated 2026-10-02).
- 2650 Ridge AveEvanston, IL 60201
- 3811 Highland AveDowners Grove, IL 60515 (630) 852‑9300
- 4440 W 95th StOak Lawn, IL 60453 (708) 684‑4393
- 800 W Central RdArlington Heights, IL 60005 (847) 618‑1000
Group practices
Medicare enrollment lists Allison L. Usher as a member of these groups (CMS data updated 2026-10-02).
- Endeavor Health Medical Group3,350 clinicians in the group
- Advocate Health and Hospitals Corporation3,118 clinicians in the group
- Anesthesia Associates, Ltd31 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Illinois →
Other nurse anesthetists in Evanston
Clinicians with the same Medicare primary specialty in Evanston, IL — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2024 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578385639 |
| 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