Quick answers
- Which hospitals does Mary M. McDermott work at?
- Medicare's official clinician data lists Mary M. McDermott at 3 hospitals: Northwestern Medicine Central Dupage Hospital, Northwestern Memorial Hospital and Palos Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mary M. McDermott see patients?
- Medicare's clinician data lists 7 practice locations, including Bloomingdale, IL, Chicago, IL and Glen Ellyn, IL. Call before your visit to confirm the address.
- What is Mary M. McDermott's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Mary M. McDermott accept Medicare assignment?
- Yes. Medicare's clinician data says Mary M. McDermott 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 M. McDermott?
- (630) 358-4414, as listed in official Medicare / NPI Registry data.
- What is Mary M. McDermott's NPI number?
- 1992911028. 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 M. McDermott works
Medicare's Facility Affiliation Data lists Mary M. McDermott at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · CCN 140242
- Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · CCN 140281
- Palos Community HospitalPalos Heights, IL · Acute Care Hospital · CCN 140062
Practice locations
Addresses where Mary M. McDermott is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 233 S Gary AveBloomingdale, IL 60108 (630) 358‑4414
- 233 S Gary Ave, Suite 100Bloomingdale, IL 60108 (630) 225‑2663
- 235 S Gary Ave, Suite 100Bloomingdale, IL 60108 (630) 893‑9600
- 4445 W Irving Park RdChicago, IL 60641
- 675 N Saint Clair StChicago, IL 60611
Group practices
Medicare enrollment lists Mary M. McDermott as a member of this group (CMS data updated 2026-10-02).
- Northwestern Medical Faculty Foundation4,503 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Bloomingdale
Clinicians with the same Medicare primary specialty in Bloomingdale, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Michigan State University College Of Human Medicine |
| Graduation year | 1989 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1992911028 |
| 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