Quick answers
- Does Joseph R. Giannasio accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph R. Giannasio accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Joseph R. Giannasio's NPI number?
- 1457560039. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Joseph R. Giannasio is enrolled with Medicare (CMS data updated October 2, 2026).
- 197 Sand Island Rd, Suite 200Honolulu, HI 96819 (808) 533‑3936
- 3501 Rice St, Suite 2020Lihue, HI 96766 (808) 245‑7548
Group practices
Medicare enrollment lists Joseph R. Giannasio as a member of this group (CMS data updated October 2, 2026).
- Care Hawaii, Inc.2 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Honolulu
Clinicians with the same Medicare primary specialty in Honolulu, HI — not a recommendation.
Other clinicians in Care Hawaii, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1973 (53 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1457560039 |
| 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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