Ken Kenji Mayemura, O.D.
NPI 1821131814ActiveIndividual· Optometrist· Seattle, WA
Optometrist (O.D.) in Seattle, Washington, trained at Southern California College of Optometry (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $19,984 for 93 claims, against $9,300 paid for services in 2024. Biotissue Holdings Inc. was the largest of 2 companies reporting payments in 2025, $245.34 in all, mostly food and beverage.
Overview
| NPI | 1821131814 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | No |
| NPI issued | Feb 15, 2007 |
| Last updated in NPPES | Feb 4, 2025 |
| Certified by provider | Feb 4, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | TX3084 | WA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Optometry (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 65 |
|---|---|
| Services billed | 137 across 16 procedure codes |
| Paid by Medicare | $9,300 |
Part D prescriptions in 2024
| Prescriptions (claims) | 93 · 143 30-day fills |
|---|---|
| Patients | 20 |
| Total drug cost | $19,984 |
| Generic share | 45% of claims |
Education and affiliations
| Medical school | Southern California College of Optometry |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Optometry |
Medical group
- Aeg Washington Professional PCKent, WA · 62 clinicians
Industry payments (Open Payments)
- 2025$245.34 · 2 payments from 2 companies
- 2024$124.57 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Biotissue Holdings Inc. | $149.20 | 1 |
| Coopervision Inc. | $96.14 | 1 |
What the 2025 payments were for
- Food and Beverage$245.34 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other optometrists in Seattle
- 1023202140
- 1033449855
- 1043872302
- 1043891443
- 1053397000
- 1063961654
- 1124351796
- 1134359946
- 1184857732
- 1235547647
- 1255505640
- 1306199021
All 264 optometrists in Seattle · All optometrists in Washington