Quick answers
- Does Joel David M. Hamaguchi accept Medicare assignment?
- Yes. Medicare's clinician data says Joel David M. Hamaguchi 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.
- How many Medicare patients does Joel David M. Hamaguchi see?
- In 2024, CMS data shows 13 Original Medicare patients and 31 services for Joel David M. Hamaguchi. This counts Original Medicare only and measures volume, not quality.
- What is Joel David M. Hamaguchi's NPI number?
- 1598178543. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Joel David M. Hamaguchi, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 13 |
|---|---|
| Services billed to Medicare | 31 |
| Different services or procedures | 13 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Hospitals where Joel David M. Hamaguchi works
Medicare's Facility Affiliation Data lists Joel David M. Hamaguchi at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Kaiser Foundation HospitalHonolulu, HI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 120011
Practice locations
Addresses where Joel David M. Hamaguchi is enrolled with Medicare (CMS data updated October 2, 2026).
- 1010 Pensacola StHonolulu, HI 96814 (808) 432‑2000
- 2828 Paa StHonolulu, HI 96819 (808) 243‑6050
- 3288 Moanalua RdHonolulu, HI 96819 (808) 432‑0000
Group practices
Medicare enrollment lists Joel David M. Hamaguchi as a member of this group (CMS data updated October 2, 2026).
- Hawaii Permanente Medical Group Inc704 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Honolulu
Clinicians with the same Medicare primary specialty in Honolulu, HI — not a recommendation.
Other clinicians in Hawaii Permanente Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| School | Yale University School Of Medicine |
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598178543 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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