Quick answers
- Does Irene Sasaki accept Medicare assignment?
- Yes. Medicare's clinician data says Irene 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 Irene Sasaki see?
- In 2024, CMS data shows 860 Original Medicare patients and 4,093 services for Irene Sasaki. This counts Original Medicare only and measures volume, not quality.
- What is Irene Sasaki's NPI number?
- 1245234178. 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 Irene 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 | 860 |
|---|---|
| Services billed to Medicare | 4,093 |
| Different services or procedures | 53 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient problem focused exam of visual system (92012)761 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)543 services
- Photography of the retina (92250)422 services
- Established patient complete exam of visual system (92014)408 services
- Imaging of optic nerve (92133)364 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%
- Arthritis43%
- Diabetes36%
- Chronic kidney disease27%
- Ischemic heart disease25%
Practice locations
Addresses where Irene Sasaki is enrolled with Medicare (CMS data updated October 2, 2026).
- 3900 Long Beach BlvdLong Beach, CA 90807 (562) 988‑8668
Group practices
Medicare enrollment lists Irene Sasaki as a member of this group (CMS data updated October 2, 2026).
- Eye Treatment Center, An Incorporated Medical Group, Inc5 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Long Beach
Clinicians with the same Medicare primary specialty in Long Beach, CA — not a recommendation.
Other clinicians in Eye Treatment Center, An Incorporated Medical Group, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Pennsylvania |
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245234178 |
| 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