Quick answers
- Which hospitals does Mark Girguis work at?
- Medicare's official clinician data lists Mark Girguis at 4 hospitals: John H Stroger Jr Hospital, Provident Hospital of Chicago, Saint Anthony Hospital and West Suburban Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark Girguis see patients?
- Medicare's clinician data lists 14 practice locations, including Norco, CA, Los Gatos, CA and Ocala, FL. Call before your visit to confirm the address.
- What is Mark Girguis's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Mark Girguis accept Medicare assignment?
- Yes. Medicare's clinician data says Mark Girguis 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 Mark Girguis?
- (480) 306-6949, as listed in official Medicare / NPI Registry data.
- What is Mark Girguis's NPI number?
- 1477591154. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark Girguis works
Medicare's Facility Affiliation Data lists Mark Girguis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- John H Stroger Jr HospitalChicago, IL · Acute Care Hospital · CCN 140124
- Provident Hospital of ChicagoChicago, IL · Acute Care Hospital · CCN 140300
- Saint Anthony HospitalChicago, IL · Acute Care Hospital · CCN 140095
- West Suburban Medical CenterOak Park, IL · Acute Care Hospital · CCN 140049
Practice locations
Addresses where Mark Girguis is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 14; the Medicare profile lists all.
- 1461 Shire PlNorco, CA 92860 (480) 306‑6949
- 14651 S Bascom Ave, 120 Simonmed Imaging Los GatosLos Gatos, CA 95032 (408) 356‑9013
- 14651 S Bascom Ave, Suite 120Los Gatos, CA 95032 · Howard Simon MD PLLC (408) 356‑9013
- 1714 SW 17th St, Suite 300Ocala, FL 34471 · Radiology Imaging Specialists LLC (352) 274‑9565
- 1740 W Taylor StChicago, IL 60612
Group practices
Medicare enrollment lists Mark Girguis as a member of these groups (CMS data updated 2026-10-02).
- The Board of Trustees of the University of Illinois1,150 clinicians in the group
- Cook County788 clinicians in the group
- Simonmed Imaging Florida LLC317 clinicians in the group
- Health Diagnostics of California a Professional Corporation183 clinicians in the group
- Saint Anthony Health Affiliates96 clinicians in the group
- Ocala Family Medical Center Inc63 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wayne State University School Of Medicine |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477591154 |
| 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