Quick answers
- Which hospitals does John C. Elser work at?
- Medicare's official clinician data lists John C. Elser at 5 hospitals: Advocate Christ Hospital & Medical Center, Northwestern Medicine Central Dupage Hospital, OSF Little Company of Mary Medical Center, Palos Community Hospital and Silver Cross Hospital and Medical Centers. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Elser see patients?
- Medicare's clinician data lists 3 practice locations, including Evergreen, IL, Evergreen Park, IL and Peoria, IL. Call before your visit to confirm the address.
- What is John C. Elser's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does John C. Elser accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Elser 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 John C. Elser?
- (708) 499-2070, as listed in official Medicare / NPI Registry data.
- What is John C. Elser's NPI number?
- 1154366839. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John C. Elser works
Medicare's Facility Affiliation Data lists John C. Elser 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
- OSF Little Company of Mary Medical CenterEvergreen Park, IL · Acute Care Hospital · CCN 140179
- Palos Community HospitalPalos Heights, IL · Acute Care Hospital · CCN 140062
- Silver Cross Hospital and Medical CentersNew Lenox, IL · Acute Care Hospital · CCN 140213
Practice locations
Addresses where John C. Elser is enrolled with Medicare (CMS data updated 2026-10-02).
- 2800 W 95th StEvergreen, IL 60805 (708) 499‑2070
- 2850 W 95th StEvergreen Park, IL 60805
- 8600 State Route 91, Suite 130Peoria, IL 61615 (309) 683‑5050
Group practices
Medicare enrollment lists John C. Elser as a member of this group (CMS data updated 2026-10-02).
- OSF Multi-Specialty Group2,114 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1154366839 |
| 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