Quick answers
- Which hospitals does Joseph Guan work at?
- Medicare's official clinician data lists Joseph Guan at 2 hospitals: Franciscan Health Munster and Franciscan Health Olympia & Chicago Heights. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Joseph Guan see patients?
- Medicare's clinician data lists 1 practice location in Olympia Fields, IL. Call before your visit to confirm the address.
- What is Joseph Guan's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Joseph Guan accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph Guan 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.
- Does Joseph Guan offer telehealth?
- Medicare's clinician data says Joseph Guan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is Joseph Guan's NPI number?
- 1154986404. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Joseph Guan works
Medicare's Facility Affiliation Data lists Joseph Guan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Franciscan Health MunsterMunster, IN · Acute Care Hospital · CCN 150165
- Franciscan Health Olympia & Chicago HeightsOlympia Fields, IL · Acute Care Hospital · CCN 140172
Practice locations
Addresses where Joseph Guan is enrolled with Medicare (CMS data updated 2026-10-02).
- 3700 W 203rd StOlympia Fields, IL 60461
Group practices
Medicare enrollment lists Joseph Guan as a member of this group (CMS data updated 2026-10-02).
- Specialty Physicians of Illinois LLC102 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Olympia Fields
Clinicians with the same Medicare primary specialty in Olympia Fields, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rush Medical College Of Rush University |
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1154986404 |
| 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