Hal Shimazu, MD
NPI 1073682241 · Family Medicine Physician · Orange, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hal Shimazu, MD is a Family Medicine Physician provider in Orange, CA (NPI 1073682241).
Provider details
- NPI number
- 1073682241
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G37057 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
572 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 237 | $138 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 110 | $140 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 101 | $98 |
| Assessment of Emotional Or Behavioral Problems96127 | 37 | $5 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 27 | $20 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 27 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 133 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 793 | 288 |
| Rosuvastatin Calcium | 592 | 209 |
| Losartan Potassium | 537 | 171 |
| Ezetimibe | 415 | 146 |
| Amlodipine Besylate | 301 | 107 |
| Levothyroxine Sodium | 284 | 89 |
| Tamsulosin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$242 across 12 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-06
- Last updated
- 2025-11-28
- Certified
- 2025-11-28
Frequently asked questions
- What is Hal Shimazu's NPI number?
- Hal Shimazu's National Provider Identifier (NPI) is 1073682241, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hal Shimazu's specialty?
- Hal Shimazu is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Hal Shimazu located?
- Hal Shimazu's practice location on file with NPPES is 845 E Chapman Ave, Orange, CA 92866-1622.
- What is Hal Shimazu's phone number?
- The practice phone number listed in the NPPES registry for Hal Shimazu is (714) 997-2899.
- Does Hal Shimazu accept Medicare?
- Hal Shimazu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hal Shimazu's NPI active?
- Yes — Hal Shimazu's NPI (1073682241) is active in the NPPES registry as of the last update on 2025-11-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.