Quick answers
- Which hospitals does Nelson Yu work at?
- Medicare's official clinician data lists Nelson Yu at 3 hospitals: Alton Memorial Hospital, Anderson Hospital and Gateway Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nelson Yu see patients?
- Medicare's clinician data lists 1 practice location in Glen Carbon, IL. Call before your visit to confirm the address.
- What is Nelson Yu's specialty?
- Medicare lists Pulmonary Disease as the primary specialty, and also Sleep Medicine.
- Does Nelson Yu accept Medicare assignment?
- Medicare's clinician data says Nelson Yu may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Nelson Yu?
- (618) 288-6870, as listed in official Medicare / NPI Registry data.
- What is Nelson Yu's NPI number?
- 1447297601. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nelson Yu works
Medicare's Facility Affiliation Data lists Nelson Yu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alton Memorial HospitalAlton, IL · Acute Care Hospital · CCN 140002
- Anderson HospitalMaryville, IL · Acute Care Hospital · CCN 140289
- Gateway Regional Medical CenterGranite City, IL · Acute Care Hospital · CCN 140125
Practice locations
Addresses where Nelson Yu is enrolled with Medicare (CMS data updated 2026-10-02).
- 4230 S State Route 159Glen Carbon, IL 62034 (618) 288‑6870
Group practices
Medicare enrollment lists Nelson Yu as a member of this group (CMS data updated 2026-10-02).
- Ahs Il Medical Group LLC45 clinicians in the group
Specialties
- Pulmonary Diseaseprimary
- Sleep Medicinealso
Other pulmonologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1447297601 |
| 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