Quick answers
- Which hospitals does John M. Mamalakis work at?
- Medicare's official clinician data lists John M. Mamalakis at 3 hospitals: Elmhurst Memorial Hospital, University of WI Hospitals & Clinics Authority and UW Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John M. Mamalakis see patients?
- Medicare's clinician data lists 5 practice locations, including Rockford, IL, Elmhurst, IL and Evanston, IL. Call before your visit to confirm the address.
- What is John M. Mamalakis's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does John M. Mamalakis accept Medicare assignment?
- Yes. Medicare's clinician data says John M. Mamalakis 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 M. Mamalakis?
- (815) 968-4400, as listed in official Medicare / NPI Registry data.
- What is John M. Mamalakis's NPI number?
- 1780726661. 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 M. Mamalakis works
Medicare's Facility Affiliation Data lists John M. Mamalakis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Elmhurst Memorial HospitalElmhurst, IL · Acute Care Hospital · CCN 140200
- University of WI Hospitals & Clinics AuthorityMadison, WI · Acute Care Hospital · CCN 520098
- UW HealthRockford, IL · Acute Care Hospital · CCN 140228
Practice locations
Addresses where John M. Mamalakis is enrolled with Medicare (CMS data updated 2026-10-02).
- 1401 E State St, Swedishamerican HospitalRockford, IL 61104 (815) 968‑4400
- 155 E Brush Hill RdElmhurst, IL 60126 (331) 221‑0096
- 177 E Brush Hill RdElmhurst, IL 60126 (630) 646‑6020
- 2650 Ridge AveEvanston, IL 60201
- 600 Highland AveMadison, WI 53792 (608) 263‑6400
Group practices
Medicare enrollment lists John M. Mamalakis as a member of these groups (CMS data updated 2026-10-02).
- Endeavor Health Medical Group3,350 clinicians in the group
- University of Wisconsin Medical Foundation Inc2,553 clinicians in the group
- Rockford Anesthesiologists Associated LLC64 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Rockford
Clinicians with the same Medicare primary specialty in Rockford, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Wisconsin School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1780726661 |
| 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