Quick answers
- Which hospitals does Mary A. Merlo work at?
- Medicare's official clinician data lists Mary A. Merlo at 3 hospitals: Advocate Christ Hospital & Medical Center, Northwestern Medicine Central Dupage Hospital and Palos Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mary A. Merlo see patients?
- Medicare's clinician data lists 4 practice locations, including Orland Park, IL and Chicago, IL. Call before your visit to confirm the address.
- What is Mary A. Merlo's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Mary A. Merlo accept Medicare assignment?
- Yes. Medicare's clinician data says Mary A. Merlo 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 Mary A. Merlo?
- (708) 923-7874, as listed in official Medicare / NPI Registry data.
- What is Mary A. Merlo's NPI number?
- 1962892232. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mary A. Merlo works
Medicare's Facility Affiliation Data lists Mary A. Merlo 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
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · CCN 140242
- Palos Community HospitalPalos Heights, IL · Acute Care Hospital · CCN 140062
Practice locations
Addresses where Mary A. Merlo is enrolled with Medicare (CMS data updated 2026-10-02).
- 15300 W AveOrland Park, IL 60462
- 15300 W Ave, Suite 223Orland Park, IL 60462 (708) 923‑7874
- 675 N Saint Clair StChicago, IL 60611
- 675 N St ClairChicago, IL 60611
Group practices
Medicare enrollment lists Mary A. Merlo as a member of these groups (CMS data updated 2026-10-02).
- Northwestern Medical Faculty Foundation4,503 clinicians in the group
- Central Dupage Physician Group1,080 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Orland Park
Clinicians with the same Medicare primary specialty in Orland Park, IL — not a recommendation.
Clinician information
| Graduation year | 2013 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1962892232 |
| 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