Quick answers
- Which hospitals does Jack S. Wu work at?
- Medicare's official clinician data lists Jack S. Wu at 3 hospitals: Saint Anthony Medical Center, Saint Joseph Hospital-Elgin and UW Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jack S. Wu see patients?
- Medicare's clinician data lists 2 practice locations, including Belvidere, IL and Rockford, IL. Call before your visit to confirm the address.
- What is Jack S. Wu's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Jack S. Wu accept Medicare assignment?
- Yes. Medicare's clinician data says Jack S. Wu 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 Jack S. Wu?
- (815) 547-5441, as listed in official Medicare / NPI Registry data.
- What is Jack S. Wu's NPI number?
- 1154548089. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jack S. Wu works
Medicare's Facility Affiliation Data lists Jack S. Wu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Saint Anthony Medical CenterRockford, IL · Acute Care Hospital · CCN 140233
- Saint Joseph Hospital-ElginElgin, IL · Acute Care Hospital · CCN 140217
- UW HealthRockford, IL · Acute Care Hospital · CCN 140228
Practice locations
Addresses where Jack S. Wu is enrolled with Medicare (CMS data updated 2026-10-02).
- 1625 S State StBelvidere, IL 61008 (815) 547‑5441
- 5666 E State StRockford, IL 61108 (815) 226‑2000
Group practices
Medicare enrollment lists Jack S. Wu as a member of these groups (CMS data updated 2026-10-02).
- Cepamerica Illinois LLP499 clinicians in the group
- Belvidere Emergency Physicians, LLC22 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Belvidere
Clinicians with the same Medicare primary specialty in Belvidere, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Vanderbilt University School Of Medicine |
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1154548089 |
| 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