Quick answers
- Does Jacob T. Shreve accept Medicare assignment?
- Yes. Medicare's clinician data says Jacob T. Shreve 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 Jacob T. Shreve see?
- In 2024, CMS data shows 116 Original Medicare patients and 269 services for Jacob T. Shreve. This counts Original Medicare only and measures volume, not quality.
- What is Jacob T. Shreve's NPI number?
- 1497242713. 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 Jacob T. Shreve, 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 | 116 |
|---|---|
| Services billed to Medicare | 269 |
| Different services or procedures | 16 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)104 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)38 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)33 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)21 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)12 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 cholesterol70%
- Chronic kidney disease43%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)43%
- Arthritis39%
- Diabetes32%
Hospitals where Jacob T. Shreve works
Medicare's Facility Affiliation Data lists Jacob T. Shreve 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
- Kuakini Medical CenterHonolulu, HI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 120007
- 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 Jacob T. Shreve is enrolled with Medicare (CMS data updated October 2, 2026).
- 640 Ulukahiki StKailua, HI 96734 (808) 263‑5142
Group practices
Medicare enrollment lists Jacob T. Shreve as a member of this group (CMS data updated October 2, 2026).
- Castle Medical Center77 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Hawaii
Clinicians with the same Medicare primary specialty in Hawaii — not a recommendation.
Other clinicians in Castle Medical Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Louisville School Of Medicine |
| Graduation year | 2005 (21 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) | 1497242713 |
| 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