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KEN KENJI MAYEMURA O.D.
NPI 1821131814
Optometrist in Seattle, WA

Active since February 15, 2007PECOS EnrolledAccepts Medicare Assignment
3202 W MCGRAW ST, SEATTLE, WA 98199(206) 284-5850(206) 600-5850 Get Directions Write a Review

NPPES record last updated: February 4, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 4, 2025, Mar 7, 2023 (2 updates tracked since 2023).

About Ken Kenji Mayemura O.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KEN KENJI MAYEMURA O.D. (NPI 1821131814) is an individual optometrist in Seattle, Washington, licensed in Washington (TX3084) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS and is a graduate of Southern California College Of Optometry (1992).

NPPES Registry Identity

NPI1821131814
Entity TypeIndividualMale
Primary Taxonomy152W00000X
Provider Legal NameKEN KENJI MAYEMURACredential: O.D.
Location Address3202 W MCGRAW STSeattle, WA 98199-3208
Mailing Address3202 W Mcgraw StSeattle, WA 98199-3208 · (206) 284-5850 · Fax (206) 600-5850
Phone(206) 284-5850
Fax(206) 600-5850
Sole ProprietorNo
Medical School CMSSouthern California College Of OptometryGraduated 1992
Enumeration DateFebruary 15, 2007
Last NPPES UpdateFebruary 4, 20252 updates tracked since enumeration
NPPES CertifiedFebruary 4, 2025
✔ NPI 1821131814 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in WA · TX3084
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
3202 W MCGRAW ST, Seattle, WA 98199
Open in Google Maps ↗

Other Identifiers 1

Medicaid2021095WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ken Kenji Mayemura O.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5799775599
PECOS Enrollment IDI20040514000306
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Ken Mayemura reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mayemura Inc.
Same address
Optometrist
3202 W MCGRAW ST
Seattle, WA 98199
  • Reassigned Medicare billing, Washington enrollment
  • 8 clinicians in this Medicare group
NPI 1932375979 (206) 284-5850
Aeg Washington Professional PC
10 mi
Optometrist
12310 NE 8TH ST STE 101
Bellevue, WA 98005
  • Reassigned Medicare billing, Washington enrollment
  • 87 clinicians in this Medicare group
NPI 1134835176 (425) 455-0001

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient complete exam of visual system 92014
An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.
45 services45 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
17 services14 patients
Photography of the retina 92250
Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.
14 services14 patients
Imaging of optic nerve 92133
Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98199 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$143.76 typical visit price
range $63.67 – $189.37
Typical copayment $35.94 (range $15.91 – $47.34)
Most-billed visit code 99204
Established Patient
$78.74 typical visit price
range $21.12 – $155.00
Typical copayment $19.68 (range $5.28 – $38.75)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MAYEMURA INC.
Optometrist
3202 W MCGRAW ST
SEATTLE, WA 98199
King County (206) 284-5850

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ken Mayemura's NPI number?

The NPI number for Ken Mayemura is 1821131814. It was assigned to this individual provider in the NPPES registry on February 15, 2007.

Where is Ken Mayemura located?

Ken Mayemura practices at 3202 W Mcgraw St, Seattle, WA 98199. The listed phone number is (206) 284-5850.

What is Ken Mayemura's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Ken Mayemura enrolled in Medicare?

Yes. Ken Mayemura is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Ken Mayemura's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ken Mayemura reassigns Medicare benefits to 2 organizations: Mayemura Inc. (Seattle, WA) and Aeg Washington Professional PC (Bellevue, WA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ken Mayemura's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ken Mayemura accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Oklahoma and 3 other insurers list Ken Mayemura as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Ken Mayemura was last updated on February 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.