Kazumasa Osato
NPI 1134748015 · Internal Medicine Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kazumasa Osato is a Internal Medicine Physician provider in Torrance, CA (NPI 1134748015).
Provider details
- NPI number
- 1134748015
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
- License
- 188521 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
6 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
376 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 | 66 | $139 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 51 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 50 | $8 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 46 | $13 |
| Hemoglobin A1c Level83036 | 43 | $10 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 42 | $16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 70 | 36 |
| Amlodipine Besylate | 46 | 28 |
| Losartan Potassium | 31 | 16 |
| Rosuvastatin Calcium | 27 | 15 |
| Simvastatin | 24 | 12 |
| Metformin Hcl | 23 | 12 |
| Omeprazole | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$547 across 23 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
Additional practice locations (1)
- 1638 Owen DrFayetteville, NC 28304-3424Phone: (910) 615-5095
Registry dates
- Enumerated
- 2020-04-10
- Last updated
- 2024-02-03
- Certified
- 2024-02-03
Frequently asked questions
- What is Kazumasa Osato's NPI number?
- Kazumasa Osato's National Provider Identifier (NPI) is 1134748015, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kazumasa Osato's specialty?
- Kazumasa Osato is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kazumasa Osato located?
- Kazumasa Osato's practice location on file with NPPES is 2860 Sepulveda Blvd, Torrance, CA 90505-2803.
- What is Kazumasa Osato's phone number?
- The practice phone number listed in the NPPES registry for Kazumasa Osato is (310) 534-8200.
- Does Kazumasa Osato accept Medicare?
- Kazumasa Osato is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kazumasa Osato's NPI active?
- Yes — Kazumasa Osato's NPI (1134748015) is active in the NPPES registry as of the last update on 2024-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.