Quick answers
- Which hospitals does Jon S. Yamaguchi work at?
- Medicare's official clinician data lists Jon S. Yamaguchi at 1 hospital: Adventist Health Castle. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jon S. Yamaguchi see patients?
- Medicare's clinician data lists 2 practice locations, including Kailua, HI. Call before your visit to confirm the address.
- What is Jon S. Yamaguchi's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Jon S. Yamaguchi accept Medicare assignment?
- Yes. Medicare's clinician data says Jon S. Yamaguchi 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 Jon S. Yamaguchi?
- (808) 263-5142, as listed in official Medicare / NPI Registry data.
- What is Jon S. Yamaguchi's NPI number?
- 1720006810. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jon S. Yamaguchi works
Medicare's Facility Affiliation Data lists Jon S. Yamaguchi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health CastleKailua, HI · Acute Care Hospital · CCN 120006
Practice locations
Addresses where Jon S. Yamaguchi is enrolled with Medicare (CMS data updated 2026-10-02).
- 640 Ulukahiki StKailua, HI 96734 (808) 263‑5142
- 642 Ulukahiki St, Suite 103Kailua, HI 96734 (808) 263‑5241
Group practices
Medicare enrollment lists Jon S. Yamaguchi as a member of this group (CMS data updated 2026-10-02).
- Castle Medical Center77 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Kailua
Clinicians with the same Medicare primary specialty in Kailua, HI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Temple University School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1720006810 |
| 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