Quick answers
- Does Jason H. Nakagawa accept Medicare assignment?
- Yes. Medicare's clinician data says Jason H. Nakagawa 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 Jason H. Nakagawa see?
- In 2024, CMS data shows 161 Original Medicare patients and 1,240 services for Jason H. Nakagawa. This counts Original Medicare only and measures volume, not quality.
- What is Jason H. Nakagawa's NPI number?
- 1861415481. 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 Jason H. Nakagawa, 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 | 161 |
|---|---|
| Services billed to Medicare | 1,240 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- 2d ultrasound scan of eye tissue and structures (76512)281 services
- Photography of the retina (92250)186 services
- Exam of visual field with intermediate testing (92082)147 services
- Established patient problem focused exam of visual system (92012)143 services
- Exam of visual field with extended testing (92083)138 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 cholesterol73%
- High blood pressure61%
- Arthritis52%
- Ischemic heart disease23%
- Osteoporosis20%
- Depression19%
Practice locations
Addresses where Jason H. Nakagawa is enrolled with Medicare (CMS data updated October 2, 2026).
- 4560 Admiralty Way, Suite 354Marina Del Rey, CA 90292 (310) 508‑4348
Specialties
- Optometryprimary
Other optometrists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | Pacific University - College Of Optometry |
| Graduation year | 1991 (35 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861415481 |
| 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