Quick answers
- Does Carl J. Tadaki accept Medicare assignment?
- Yes. Medicare's clinician data says Carl J. Tadaki 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 Carl J. Tadaki see?
- In 2024, CMS data shows 110 Original Medicare patients and 231 services for Carl J. Tadaki. This counts Original Medicare only and measures volume, not quality.
- What is Carl J. Tadaki's NPI number?
- 1922242809. 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 Carl J. Tadaki, 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 | 110 |
|---|---|
| Services billed to Medicare | 231 |
| Different services or procedures | 45 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)42 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)32 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)26 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)15 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)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 cholesterol75%
- Chronic kidney disease37%
- Arthritis33%
- Diabetes30%
- Ischemic heart disease26%
Practice locations
Addresses where Carl J. Tadaki is enrolled with Medicare (CMS data updated October 2, 2026).
- 134 Puuhonu WayHilo, HI 96720 (808) 969‑3979
- 321 N Kuakini St, Suite 714Honolulu, HI 96817 (808) 528‑3606
Group practices
Medicare enrollment lists Carl J. Tadaki as a member of this group (CMS data updated October 2, 2026).
- Gastroenterology Associates Inc4 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Hilo
Clinicians with the same Medicare primary specialty in Hilo, HI — not a recommendation.
Other clinicians in Gastroenterology Associates Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tulane University School Of Medicine |
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922242809 |
| 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
- 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