Quick answers
- Which hospitals does Elbert Chang work at?
- Medicare's official clinician data lists Elbert Chang at 4 hospitals: Casa Colina Hospital, Montclair Hospital Medical Center, Pomona Valley Hospital Medical Center and San Antonio Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Elbert Chang see patients?
- Medicare's clinician data lists 3 practice locations, including Pomona, CA, Montclair, CA and Upland, CA. Call before your visit to confirm the address.
- What is Elbert Chang's specialty?
- Medicare lists Pulmonary Disease as the primary specialty, and also Internal Medicine.
- Does Elbert Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Elbert Chang 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 Elbert Chang offer telehealth?
- Medicare's clinician data says Elbert Chang offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Elbert Chang?
- (909) 626-1205, as listed in official Medicare / NPI Registry data.
- What is Elbert Chang's NPI number?
- 1053417808. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Elbert Chang works
Medicare's Facility Affiliation Data lists Elbert Chang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Casa Colina HospitalPomona, CA · Acute Care Hospital · CCN 050782
- Montclair Hospital Medical CenterMontclair, CA · Acute Care Hospital · CCN 050758
- Pomona Valley Hospital Medical CenterPomona, CA · Acute Care Hospital · CCN 050231
- San Antonio Regional HospitalUpland, CA · Acute Care Hospital · CCN 050099
Practice locations
Addresses where Elbert Chang is enrolled with Medicare (CMS data updated 2026-10-02).
- 255 E Bonita AvePomona, CA 91767 (909) 626‑1205
- 9525 Monte Vista Ave, Suite 105Montclair, CA 91763 (909) 626‑1205
- 999 San Bernardino RdUpland, CA 91786 (909) 985‑2811
Group practices
Medicare enrollment lists Elbert Chang as a member of these groups (CMS data updated 2026-10-02).
- Inland Physicians Hospitalist Services14 clinicians in the group
- Inland Physicians Pulmonary Services7 clinicians in the group
Specialties
- Pulmonary Diseaseprimary
- Internal Medicinealso
Other pulmonologists in Pomona
Clinicians with the same Medicare primary specialty in Pomona, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1053417808 |
| 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