Quick answers
- Does Masaharu Sasaki accept Medicare assignment?
- Yes. Medicare's clinician data says Masaharu Sasaki 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 Masaharu Sasaki see?
- In 2024, CMS data shows 11 Original Medicare patients and 51 services for Masaharu Sasaki. This counts Original Medicare only and measures volume, not quality.
- What is Masaharu Sasaki's NPI number?
- 1720157308. 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 Masaharu Sasaki, 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 | 11 |
|---|---|
| Services billed to Medicare | 51 |
| Different services or procedures | 1 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Chiropractic manipulative treatment, 5 spinal regions (98942)51 services
Practice locations
Addresses where Masaharu Sasaki is enrolled with Medicare (CMS data updated October 2, 2026).
- 17502 Irvine Blvd, Suite ATustin, CA 92780 (714) 665‑1354
- 17502 Irvine Blvd ATustin, CA 92780 (714) 665‑1354
Specialties
Find other Undefined Non-Physician Type (Specify) doctors in California →
Other clinicians in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Graduation year | 1987 (39 years since medical school) |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1720157308 |
| 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