Quick answers
- Which hospitals does Willis J. Chang work at?
- Medicare's official clinician data lists Willis J. Chang at 1 hospital: Pali Momi Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Willis J. Chang see patients?
- Medicare's clinician data lists 1 practice location in Aiea, HI. Call before your visit to confirm the address.
- What is Willis J. Chang's specialty?
- Medicare lists Infectious Disease as the primary specialty, and also Internal Medicine.
- Does Willis J. Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Willis J. 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.
- What is the phone number for Willis J. Chang?
- (808) 486-6000, as listed in official Medicare / NPI Registry data.
- What is Willis J. Chang's NPI number?
- 1558306720. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Willis J. Chang works
Medicare's Facility Affiliation Data lists Willis J. Chang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Pali Momi Medical CenterAiea, HI · Acute Care Hospital · CCN 120026
Practice locations
Addresses where Willis J. Chang is enrolled with Medicare (CMS data updated 2026-10-02).
- 98 -1079 Moanalua RdAiea, HI 96701 (808) 486‑6000
Specialties
- Infectious Diseaseprimary
- Internal Medicinealso
Other infectious disease doctors in Hawaii
Clinicians with the same Medicare primary specialty in Hawaii — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Hawaii John A. Burns School Of Medicine |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558306720 |
| 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