Quick answers
- Does Clayton Y. Yamada accept Medicare assignment?
- Yes. Medicare's clinician data says Clayton Y. Yamada 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 Clayton Y. Yamada see?
- In 2024, CMS data shows 2,603 Original Medicare patients and 4,200 services for Clayton Y. Yamada. This counts Original Medicare only and measures volume, not quality.
- What is Clayton Y. Yamada's NPI number?
- 1134166739. 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 Clayton Y. Yamada, 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 | 2,603 |
|---|---|
| Services billed to Medicare | 4,200 |
| Different services or procedures | 221 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Ct scan head or brain without contrast (70450)291 services
- Screening mammography (77067)241 services
- Screening 3d breast mammography (77063)198 services
- X-ray of chest, 1 view (71045)191 services
- Ct scan of abdomen and pelvis with contrast (74177)167 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease44%
- Arthritis42%
- Diabetes41%
- Ischemic heart disease30%
Hospitals where Clayton Y. Yamada works
Medicare's Facility Affiliation Data lists Clayton Y. Yamada 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.
- Hilo Benioff Medical CenterHilo, HI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 120005
- Molokai General HospitalKaunakakai, HI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 121303
- North Hawaii Community Hospital, IncKamuela, HI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 120028
- Straub Clinic and HospitalHonolulu, HI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 120022
- The Queens Medical CenterHonolulu, HI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 120001
Practice locations
Addresses where Clayton Y. Yamada is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 9; the Medicare profile lists all.
- 1215 Hunakai StHonolulu, HI 96816
- 128 Lehua StWahiawa, HI 96786 (808) 691‑6800
- 1301 Punchbowl StHonolulu, HI 96813
- 1380 Lusitana StHonolulu, HI 96813
- 1401 S Beretania St, Suite 750Honolulu, HI 96814 (808) 691‑8526
Group practices
Medicare enrollment lists Clayton Y. Yamada as a member of these groups (CMS data updated October 2, 2026).
- Queens University Medical Group614 clinicians in the group
- Queens North Hawaii Community Hospital108 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
- Interventional Radiologyalso
Other radiologists in Honolulu
Clinicians with the same Medicare primary specialty in Honolulu, HI — not a recommendation.
Other clinicians in Queens University Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Hawaii John A. Burns School Of Medicine |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1134166739 |
| 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