Quick answers
- Which hospitals does John R. Cheung work at?
- Medicare's official clinician data lists John R. Cheung at 2 hospitals: Providence Little Company of Mary Medical Center Torrance and Torrance Memorial Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John R. Cheung see patients?
- Medicare's clinician data lists 1 practice location in Torrance, CA. Call before your visit to confirm the address.
- What is John R. Cheung's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does John R. Cheung accept Medicare assignment?
- Yes. Medicare's clinician data says John R. Cheung 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 John R. Cheung's NPI number?
- 1215364559. 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 R. Cheung works
Medicare's Facility Affiliation Data lists John R. Cheung at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Providence Little Company of Mary Medical Center TorranceTorrance, CA · Acute Care Hospital · CCN 050353
- Torrance Memorial Medical CenterTorrance, CA · Acute Care Hospital · CCN 050351
Practice locations
Addresses where John R. Cheung is enrolled with Medicare (CMS data updated 2026-10-02).
- 23639 Hawthorne Blvd, Suite 200Torrance, CA 90505
Group practices
Medicare enrollment lists John R. Cheung as a member of this group (CMS data updated 2026-10-02).
- Asad U Khaja MD Inc7 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Torrance
Clinicians with the same Medicare primary specialty in Torrance, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1215364559 |
| 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