Quick answers
- Which hospitals does Maria Holstrom-Mercader work at?
- Medicare's official clinician data lists Maria Holstrom-Mercader at 1 hospital: Advocate Condell Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Maria Holstrom-Mercader see patients?
- Medicare's clinician data lists 3 practice locations, including Emeryville, CA, Chicago, IL and Urbana, IL. Call before your visit to confirm the address.
- What is Maria Holstrom-Mercader's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Maria Holstrom-Mercader accept Medicare assignment?
- Medicare's clinician data says Maria Holstrom-Mercader may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is Maria Holstrom-Mercader's NPI number?
- 1306536339. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Maria Holstrom-Mercader works
Medicare's Facility Affiliation Data lists Maria Holstrom-Mercader 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
Practice locations
Addresses where Maria Holstrom-Mercader is enrolled with Medicare (CMS data updated 2026-10-02).
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Emeryville
Clinicians with the same Medicare primary specialty in Emeryville, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Pennsylvania State University College Of Medicine |
| Graduation year | 2023 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1306536339 |
| 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