Eugene Yoichi Osako, OD
- Medicare patients, 2024
- 109
- Part D claims, 2024
- 44
- Industry payments
- $39
- Affiliated sites
- 4
- Medical groups
- 4
- Practice address
- 18525 S Western Ave, Gardena, CA 90248
- Practice phone
- Call (310) 538-3937
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Richard J. Miyamoto, O.D
Gardena, California
Find Eugene Osako's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Eugene Yoichi Osako is an optometrist in Gardena, California
Eugene Osako practices at Richard J. Miyamoto, O.D in Gardena, California.
Eugene Osako's NPI, 1376683409, was assigned on February 7, 2007. Eugene Osako graduated from New England College of Optometry in 2001. Eugene Osako holds California license OPT11723TPL.
- NPI
- 1376683409NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739127754
- NPI enumeration date
- February 7, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 538-3937
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Eugene Yoichi Osako practices at Richard J. Miyamoto, O.D in Gardena, California
Eugene Osako's primary practice is Richard J. Miyamoto, O.D, at 18525 S Western Ave, Gardena, CA 90248 in Los Angeles County. The practice phone is (310) 538-3937.
- Richard J. Miyamoto, O.D18525 S Western Ave, Gardena, CA 90248 · Los Angeles CountyPhone(310) 538-3937
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Eugene Yoichi Osako is affiliated with 5 sites of care and 4 medical groups
Eugene Osako's primary practice is Richard J. Miyamoto, O.D in Gardena, California. Dmand AI also links Eugene Osako to 4 group practices and clinics and 4 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Eugene Yoichi Osako's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Eugene Osako practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Richard J. Miyamoto, O.D | Available with a free account |
| +4 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Eugene Yoichi Osako is one of 7,206 optometrists in California
Optometrist is Eugene Osako's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Eugene Osako is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Eugene Osako
Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Eugene Yoichi Osako treated 109 Medicare patients in 2024, average age 74
CMS counts 109 Medicare patients who saw Eugene Osako in 2024. The largest group is 65 to 74, with 66 patients. 70% of them have high cholesterol, and 60% have high blood pressure. Their average risk score is 0.75, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Eugene Osako's median patient age at 65, with 61% women.
Eugene Osako's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Eugene Osako's Medicare patients by sex, 2024
- Women6257%
- Men4743%
Chronic conditions among Eugene Osako's Medicare patients, 2024
- High cholesterol70%
- High blood pressure60%
- Arthritis28%
- Diabetes24%
- Ischemic heart disease19%
- Cancer17%
- Osteoporosis17%
- Chronic kidney disease11%
Share of Medicare patients with each condition. A patient can have several.
Eugene Osako's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Eugene Yoichi Osako wrote 44 Medicare Part D claims in 2024
In 2024, Eugene Osako wrote 44 Medicare Part D claims for 32 patients. 34% of them were for generic drugs.
Eugene Osako's Part D claims by kind of drug, 2024
- Generic15 claims34%
- Brand-name29 claims66%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Eugene Yoichi Osako takes part in Medicare
Eugene Osako accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Eugene Yoichi Osako received $39 in industry payments in 2025
CMS Open Payments shows 3 general payments to Eugene Osako from 3 drug and device companies in 2025. Food and beverage make up the largest share, 62% of the total. Bausch & Lomb Americas Inc. paid the most, $17.
General payments to Eugene Osako by kind, 2025 to 2025
- Food and beverage$2462%
- Entertainment$1538%
Companies that paid Eugene Osako the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Eugene Yoichi Osako graduated from New England College of Optometry
Eugene Osako graduated from New England College of Optometry in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Eugene Yoichi Osako's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Eugene Yoichi Osako
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Eugene Yoichi Osako's NPI number?
Eugene Yoichi Osako's NPI number is 1376683409. It was assigned on February 7, 2007, and it is active in the NPI Registry.
What does Eugene Yoichi Osako specialize in?
Eugene Yoichi Osako is an optometrist in Gardena, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Eugene Yoichi Osako practice?
Eugene Osako practices at 18525 S Western Ave, Gardena, CA 90248. Eugene Osako's primary practice is Richard J. Miyamoto, O.D in Gardena, California. Dmand AI also links Eugene Osako to 4 group practices and clinics and 4 medical groups.
What is Eugene Yoichi Osako's office phone number?
The practice phone on file for Eugene Osako is (310) 538-3937.
What is Eugene Yoichi Osako's medical license number?
Eugene Osako holds California license OPT11723TPL.
Does Eugene Yoichi Osako accept Medicare?
Yes. CMS lists Eugene Osako as accepting Medicare assignment.
How many Medicare patients does Eugene Yoichi Osako see?
CMS counts 109 Medicare patients who saw Eugene Osako in 2024, with an average age of 74.
Where did Eugene Yoichi Osako go to medical school?
Eugene Osako graduated from New England College of Optometry in 2001.
Has Eugene Yoichi Osako received payments from drug or device companies?
CMS Open Payments shows $39 in general payments to Eugene Osako from 3 companies from 2025 to 2025. The largest total came from Bausch & Lomb Americas Inc.
How long has Eugene Yoichi Osako been practicing?
Eugene Osako graduated from medical school in 2001, 25 years ago.
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