Quick answers
- Does Masumi G. Asahi accept Medicare assignment?
- Yes. Medicare's clinician data says Masumi G. Asahi 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 Masumi G. Asahi see?
- In 2024, CMS data shows 82 Original Medicare patients and 112 services for Masumi G. Asahi. This counts Original Medicare only and measures volume, not quality.
- What is Masumi G. Asahi's NPI number?
- 1962963769. 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 Masumi G. Asahi, 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 | 82 |
|---|---|
| Services billed to Medicare | 112 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Removal of eye fluid (vitreous) between lens and retina (67036)18 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%
- Diabetes41%
- Arthritis35%
- Chronic kidney disease34%
- Ischemic heart disease30%
Hospitals where Masumi G. Asahi works
Medicare's Facility Affiliation Data lists Masumi G. Asahi at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- PIH Health Good Samaritan HospitalLos Angeles, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 050471
Practice locations
Addresses where Masumi G. Asahi is enrolled with Medicare (CMS data updated October 2, 2026).
- 1206 E 17th St, Suite 101Santa Ana, CA 92701 (714) 352‑2911
- 4201 Torrance Blvd, Suite 220Torrance, CA 90503 (310) 944‑9393
Group practices
Medicare enrollment lists Masumi G. Asahi as a member of these groups (CMS data updated October 2, 2026).
- Retina Macula Institute5 clinicians in the group
- Serve the People, Inc.5 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Santa Ana
Clinicians with the same Medicare primary specialty in Santa Ana, CA — not a recommendation.
Other clinicians in Retina Macula Institute
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1962963769 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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