Quick answers
- Which hospitals does Jeffrey W. Hartwig work at?
- Medicare's official clinician data lists Jeffrey W. Hartwig at 1 hospital: Loyola University Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jeffrey W. Hartwig see patients?
- Medicare's clinician data lists 1 practice location in Maywood, IL. Call before your visit to confirm the address.
- What is Jeffrey W. Hartwig's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Jeffrey W. Hartwig accept Medicare assignment?
- Yes. Medicare's clinician data says Jeffrey W. Hartwig 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 Jeffrey W. Hartwig's NPI number?
- 1124281019. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jeffrey W. Hartwig works
Medicare's Facility Affiliation Data lists Jeffrey W. Hartwig at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Loyola University Medical CenterMaywood, IL · Acute Care Hospital · CCN 140276
Practice locations
Addresses where Jeffrey W. Hartwig is enrolled with Medicare (CMS data updated 2026-10-02).
- 2160 S 1st AveMaywood, IL 60153
Group practices
Medicare enrollment lists Jeffrey W. Hartwig as a member of this group (CMS data updated 2026-10-02).
- Loyola University Medical Center953 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Maywood
Clinicians with the same Medicare primary specialty in Maywood, IL — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124281019 |
| 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