Quick answers
- Does John W. Neighbors accept Medicare assignment?
- Yes. Medicare's clinician data says John W. Neighbors 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 John W. Neighbors see?
- In 2024, CMS data shows 279 Original Medicare patients and 497 services for John W. Neighbors. This counts Original Medicare only and measures volume, not quality.
- What is John W. Neighbors's NPI number?
- 1629506233. 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 John W. Neighbors, 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 | 279 |
|---|---|
| Services billed to Medicare | 497 |
| Different services or procedures | 13 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)238 services
- Advance care planning, first 30 minutes (99497)198 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)29 services
- Critical care, first 30-74 minutes (99291)15 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%
- Ischemic heart disease52%
- Chronic kidney disease52%
- Diabetes49%
- Heart failure46%
Hospitals where John W. Neighbors works
Medicare's Facility Affiliation Data lists John W. Neighbors 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.
- Adventist Health CastleKailua, HI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 120006
- Kahuku Medical CenterKahuku, HI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 121304
Practice locations
Addresses where John W. Neighbors is enrolled with Medicare (CMS data updated October 2, 2026).
- 640 Ulukahiki StKailua, HI 96734 (808) 263‑5500
Group practices
Medicare enrollment lists John W. Neighbors as a member of this group (CMS data updated October 2, 2026).
- Inpatient Medicine Services LLC10 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Kailua
Clinicians with the same Medicare primary specialty in Kailua, HI — not a recommendation.
Other clinicians in Inpatient Medicine Services LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629506233 |
| 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