MUEN YANG O.D.
NPI 1659823938
Optometrist in Clackamas, OR
About Muen Yang O.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MUEN YANG O.D. (NPI 1659823938) is an individual optometrist in Clackamas, Oregon, licensed in Oregon (4658) and active in the NPI registry since November 2016. She is enrolled in Medicare PECOS and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses
Accepted 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
Muen Yang 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.
Medicare Billing Reassignment
Medicare enrollment records show Muen Yang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Clackamas, OR 97015
- Reassigned Medicare billing, Oregon and Washington enrollments
- Also billed through NPI 1871848457 (Washington)
- 3,207 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97086 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CLACKAMAS, OR 97086
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 Muen Yang's NPI number?
The NPI number for Muen Yang is 1659823938. It was assigned to this individual provider in the NPPES registry on November 2, 2016.
Where is Muen Yang located?
Muen Yang practices at 12100 SE Stevens Ct Ste 106, Clackamas, OR 97086. The listed phone number is (800) 813-2000.
What is Muen Yang's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Muen Yang enrolled in Medicare?
Yes. Muen Yang 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 organization bills Medicare for Muen Yang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Muen Yang reassigns Medicare benefits to Kaiser Foundation Health Plan Of The Northwest (Clackamas, OR). The 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 Muen Yang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Muen Yang accept?
Health plans from Kaiser Permanente list Muen Yang 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 Muen Yang was last updated on March 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Muen Yang, O.D. · NPI 1659823938
Optometrist provider in Clackamas, Oregon. Individual provider, active in the CMS NPPES registry since November 2, 2016.
## Identity
- **NPI:** 1659823938 (Entity type: Individual)
- **Enumerated:** November 2, 2016
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 4658 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 12100 SE STEVENS CT STE 106, Clackamas, OR 97086-4707
- **Phone:** (800) 813-2000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Kaiser Foundation Health Plan Of The Northwest (NPI 1174851505, Clackamas, OR), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** March 5, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1659823938) · Data from the CMS NPPES public registry.