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GWEN THILAVANH
NPI 1902269525
Optometrist in Happy Valley, OR

Active since March 31, 2016PECOS EnrolledAccepts Medicare Assignment
9201 SE 91ST AVE STE 130, HAPPY VALLEY, OR 97086(503) 775-2424(503) 775-6181 Get Directions Write a Review

NPPES record last updated: August 22, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 22, 2026, Sep 21, 2021, Oct 21, 2016 and 1 more (4 updates tracked since 2016).

About Gwen Thilavanh NPPES

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

GWEN THILAVANH (NPI 1902269525) is an individual optometrist in Happy Valley, Oregon, licensed in Oregon (ATI4304) and active in the NPI registry since March 2016. She is enrolled in Medicare PECOS and is a graduate of Pacific University - College Of Optometry (2017).

NPPES Registry Identity

NPI1902269525
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameGWEN THILAVANH
Location Address9201 SE 91ST AVE STE 130Happy Valley, OR 97086-3760
Mailing Address9201 Se 91st Ave Ste 130Happy Valley, OR 97086-3760 · (503) 775-2424 · Fax (503) 775-6181
Phone(503) 775-2424
Fax(503) 775-6181
Sole ProprietorNo
Medical School CMSPacific University - College Of OptometryGraduated 2017
Enumeration DateMarch 31, 2016
Last NPPES UpdateAugust 22, 20264 updates tracked since enumeration
NPPES CertifiedAugust 22, 2026
✔ NPI 1902269525 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 OR · ATI4304
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.
9201 SE 91ST AVE STE 130, Happy Valley, OR 97086
Open in Google Maps ↗

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 Montana, Blue Cross and Blue Shield of Oklahoma 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

Gwen Thilavanh 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 ID1557769734
PECOS Enrollment IDI20211004000962
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 Gwen Thilavanh reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

River City Eyecare, LLC
Same address
Eyewear Supplier
9201 SE 91ST AVE, SUITE 130
Clackamas, OR 97086
  • Reassigned Medicare billing, Oregon enrollment
  • 4 clinicians in this Medicare group
NPI 1578899472 (503) 775-2424
Spectacle LLC
8.0 mi
Optometrist
2250 NW LOVEJOY ST
Portland, OR 97210
  • Reassigned Medicare billing, Oregon enrollment
  • 9 clinicians in this Medicare group
NPI 1376951293 (503) 719-5179

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 2

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.

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
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
12 services12 patients

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.

New Patient
$134.16 typical visit price
range $58.99 – $176.88
Typical copayment $33.54 (range $14.74 – $44.22)
Most-billed visit code 99204
Established Patient
$73.28 typical visit price
range $19.32 – $144.79
Typical copayment $18.32 (range $4.83 – $36.19)
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.

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 Gwen Thilavanh's NPI number?

The NPI number for Gwen Thilavanh is 1902269525. It was assigned to this individual provider in the NPPES registry on March 31, 2016.

Where is Gwen Thilavanh located?

Gwen Thilavanh practices at 9201 SE 91st Ave Ste 130, Happy Valley, OR 97086. The listed phone number is (503) 775-2424.

What is Gwen Thilavanh's specialty?

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

Is Gwen Thilavanh enrolled in Medicare?

Yes. Gwen Thilavanh 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 Gwen Thilavanh's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gwen Thilavanh reassigns Medicare benefits to 2 organizations: River City Eyecare, LLC (Clackamas, OR) and Spectacle LLC (Portland, OR). 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 Gwen Thilavanh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gwen Thilavanh accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and BridgeSpan Health Company and 4 other insurers list Gwen Thilavanh 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 Gwen Thilavanh was last updated on August 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.