Craig Hamasaki, M.D.
NPI 1003870478 · Internal Medicine Physician · Aiea, HI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Craig Hamasaki, M.D. is a Internal Medicine Physician provider in Aiea, HI (NPI 1003870478).
Provider details
- NPI number
- 1003870478
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD-5730 (HI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,217 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 533 | $130 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 222 | $135 |
| Advance Care Planning, First 30 Minutes99497 | 209 | $83 |
| Administration of a Standardized, Evidence-Based Social Determinants of Health Risk Assessment Tool, 5-15 MinutesG0136 | 83 | $20 |
| Administration of Influenza Virus VaccineG0008 | 48 | $30 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 47 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 77 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 643 | 177 |
| Amlodipine Besylate | 343 | 86 |
| Losartan Potassium | 338 | 92 |
| Metformin Hcl | 239 | 65 |
| Metoprolol Succinate | 175 | 46 |
| Simvastatin | 159 | 44 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-13
- Last updated
- 2020-09-26
- Certified
- 2020-09-26
Frequently asked questions
- What is Craig Hamasaki's NPI number?
- Craig Hamasaki's National Provider Identifier (NPI) is 1003870478, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Craig Hamasaki's specialty?
- Craig Hamasaki is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Craig Hamasaki located?
- Craig Hamasaki's practice location on file with NPPES is 98-1247 Kaahumanu Street, Aiea, HI 96701.
- What is Craig Hamasaki's phone number?
- The practice phone number listed in the NPPES registry for Craig Hamasaki is (808) 486-9119.
- Does Craig Hamasaki accept Medicare?
- Craig Hamasaki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Craig Hamasaki's NPI active?
- Yes — Craig Hamasaki's NPI (1003870478) is active in the NPPES registry as of the last update on 2020-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.