Quick answers
- Which hospitals does John J. Guido work at?
- Medicare's official clinician data lists John J. Guido at 4 hospitals: Northwestern Lake Forest Hospital, Northwestern Medicine Central Dupage Hospital, Northwestern Medicine McHenry and Northwestern Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John J. Guido see patients?
- Medicare's clinician data lists 1 practice location in McHenry, IL. Call before your visit to confirm the address.
- What is John J. Guido's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does John J. Guido accept Medicare assignment?
- Yes. Medicare's clinician data says John J. Guido 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 J. Guido?
- (815) 759-4323, as listed in official Medicare / NPI Registry data.
- What is John J. Guido's NPI number?
- 1760412571. 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 J. Guido works
Medicare's Facility Affiliation Data lists John J. Guido at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northwestern Lake Forest HospitalLake Forest, IL · Acute Care Hospital · CCN 140130
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · CCN 140242
- Northwestern Medicine McHenryMcHenry, IL · Acute Care Hospital · CCN 140116
- Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · CCN 140281
Practice locations
Addresses where John J. Guido is enrolled with Medicare (CMS data updated 2026-10-02).
- 4201 W Medical Ctr DrMcHenry, IL 60050 (815) 759‑4323
Group practices
Medicare enrollment lists John J. Guido as a member of this group (CMS data updated 2026-10-02).
- Northwestern Medical Faculty Foundation4,503 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in McHenry
Clinicians with the same Medicare primary specialty in McHenry, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rush Medical College Of Rush University |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1760412571 |
| 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