Ken Kenji Mayemura, OD
- Medicare patients, 2024
- 65
- Part D claims, 2024
- 93
- Industry payments
- $96
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 3202 W Mcgraw St, Seattle, WA 98199
- Practice phone
- Call (206) 284-5850
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Magnolia Eye Care
Eye care practice · Seattle, Washington
Find Ken Mayemura'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.
Ken Kenji Mayemura is an optometrist in Seattle, Washington
Ken Mayemura practices at Magnolia Eye Care in Seattle, Washington.
Ken Mayemura's NPI, 1821131814, was assigned on February 15, 2007. Ken Mayemura graduated from Southern California College of Optometry in 1992. Ken Mayemura holds Washington license TX3084.
- NPI
- 1821131814NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799775599
- NPI enumeration date
- February 15, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (206) 284-5850
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Ken Kenji Mayemura practices at Magnolia Eye Care in Seattle, Washington
Ken Mayemura's primary practice is Magnolia Eye Care, at 3202 W Mcgraw St, Seattle, WA 98199. The practice phone is (206) 284-5850.
- Magnolia Eye Care3202 W Mcgraw St, Seattle, WA 98199Phone(206) 284-5850
Source: Dmand AI Affiliation Data
Ken Kenji Mayemura is affiliated with 2 sites of care and 2 medical groups
Ken Mayemura's primary practice is Magnolia Eye Care in Seattle, Washington. Dmand AI also links Ken Mayemura to 2 medical groups and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Ken Kenji Mayemura's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ken Mayemura practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Magnolia Eye Care | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Ken Kenji Mayemura is one of 1,258 optometrists in Washington
Optometrist is Ken Mayemura's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Ken Mayemura is licensed in Washington.
Specialties and state licenses
- Optometrist, WashingtonPrimary
Optometrists near Ken Mayemura
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
Ken Kenji Mayemura treated 65 Medicare patients in 2024, average age 75
CMS counts 65 Medicare patients who saw Ken Mayemura in 2024. The largest group is 65 to 74, with 32 patients. 71% of them have high cholesterol, and 51% have high blood pressure. Their average risk score is 0.72, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Ken Mayemura's median patient age at 73, with 63% women.
Ken Mayemura's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Ken Mayemura's Medicare patients by sex, 2024
- Women4366%
- Men2234%
Chronic conditions among Ken Mayemura's Medicare patients, 2024
- High cholesterol71%
- High blood pressure51%
- Arthritis35%
- Osteoporosis23%
- Anxiety17%
- Mood disorders17%
Share of Medicare patients with each condition. A patient can have several.
Ken Mayemura's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women63%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Ken Kenji Mayemura wrote 93 Medicare Part D claims in 2024
In 2024, Ken Mayemura wrote 93 Medicare Part D claims for 20 patients. 45% of them were for generic drugs.
Ken Mayemura's Part D claims by kind of drug, 2024
- Generic42 claims45%
- Brand-name51 claims55%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Ken Kenji Mayemura takes part in Medicare
Ken Mayemura accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Ken Kenji Mayemura received $96 in industry payments in 2025
CMS Open Payments shows 1 general payment to Ken Mayemura from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. CooperVision Inc. paid the most, $96.
Companies that paid Ken Mayemura the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Ken Kenji Mayemura graduated from Southern California College of Optometry
Ken Mayemura graduated from Southern California College of Optometry in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Ken Kenji Mayemura'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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) |
| 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 Ken Kenji Mayemura
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Ken Kenji Mayemura's NPI number?
Ken Kenji Mayemura's NPI number is 1821131814. It was assigned on February 15, 2007, and it is active in the NPI Registry.
What does Ken Kenji Mayemura specialize in?
Ken Kenji Mayemura is an optometrist in Seattle, Washington. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Ken Kenji Mayemura practice?
Ken Mayemura practices at 3202 W Mcgraw St, Seattle, WA 98199. Ken Mayemura's primary practice is Magnolia Eye Care in Seattle, Washington. Dmand AI also links Ken Mayemura to 2 medical groups and 1 group practice or clinic.
What is Ken Kenji Mayemura's office phone number?
The practice phone on file for Ken Mayemura is (206) 284-5850.
What is Ken Kenji Mayemura's medical license number?
Ken Mayemura holds Washington license TX3084.
Does Ken Kenji Mayemura accept Medicare?
Yes. CMS lists Ken Mayemura as accepting Medicare assignment.
How many Medicare patients does Ken Kenji Mayemura see?
CMS counts 65 Medicare patients who saw Ken Mayemura in 2024, with an average age of 75.
Where did Ken Kenji Mayemura go to medical school?
Ken Mayemura graduated from Southern California College of Optometry in 1992.
Has Ken Kenji Mayemura received payments from drug or device companies?
CMS Open Payments shows $96 in general payments to Ken Mayemura from 1 company from 2025 to 2025. The largest total came from CooperVision Inc.
How long has Ken Kenji Mayemura been practicing?
Ken Mayemura graduated from medical school in 1992, 34 years ago.
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