Quick answers
- Which hospitals does Ada I. Arias work at?
- Medicare's official clinician data lists Ada I. Arias at 2 hospitals: Presence Saints Mary and Elizabeth Medical Center and Saint Francis Hospital-Evanston. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ada I. Arias see patients?
- Medicare's clinician data lists 1 practice location in Chicago, IL. Call before your visit to confirm the address.
- What is Ada I. Arias's specialty?
- Medicare lists Critical Care (Intensivists) as the primary specialty, and also Pulmonary Disease.
- Does Ada I. Arias accept Medicare assignment?
- Yes. Medicare's clinician data says Ada I. Arias 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 Ada I. Arias?
- (773) 342-5781, as listed in official Medicare / NPI Registry data.
- What is Ada I. Arias's NPI number?
- 1306848171. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ada I. Arias works
Medicare's Facility Affiliation Data lists Ada I. Arias at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Presence Saints Mary and Elizabeth Medical CenterChicago, IL · Acute Care Hospital · CCN 140180
- Saint Francis Hospital-EvanstonEvanston, IL · Acute Care Hospital · CCN 140080
Practice locations
Addresses where Ada I. Arias is enrolled with Medicare (CMS data updated 2026-10-02).
- 2222 W Division St, Suite 200Chicago, IL 60622 (773) 342‑5781
Specialties
Find other Critical Care (Intensivists) doctors in Illinois →
Other critical care doctors in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Chicago College Of Medicine And Surgery |
| Graduation year | 1984 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1306848171 |
| 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