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LOUIS HSI-TIEN LIU M.D.
NPI 1336259274
Family Medicine in Tualatin, OR

Active since August 30, 2006PECOS Enrolled
19185 SW 90TH AVE, TUALATIN, OR 97062(503) 885-7300 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Louis Hsi-tien Liu M.d. NPPES

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

LOUIS HSI-TIEN LIU M.D. (NPI 1336259274) is an individual family medicine provider in Tualatin, Oregon, licensed in Oregon (MD22905) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1336259274
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameLOUIS HSI-TIEN LIUCredential: M.D.
Location Address19185 SW 90TH AVETualatin, OR 97062-7558
Mailing Address2727 Sw Patton CtPortland, OR 97201-1642 · (503) 233-3125
Phone(503) 885-7300
Sole ProprietorYes
Enumeration DateAugust 30, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1336259274 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in OR · MD22905
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
19185 SW 90TH AVE, Tualatin, OR 97062
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Louis Hsi-tien Liu M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Louis Liu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Beaverton Rehab & Specialty Care, LLC
6.7 mi
Skilled Nursing Facility
11850 SW ALLEN BLVD
Beaverton, OR 97005
  • Reassigned Medicare billing, Oregon and Washington enrollments
  • Medicare enrollment name: Kaiser Foundation Health Plan Of The Northwest
  • Also billed through NPI 1871848457 (Washington)
  • 3,207 clinicians in this Medicare group
NPI 1366469330 (503) 646-7164

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 97062 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
$90.51 typical visit price
range $58.99 – $176.88
Typical copayment $22.62 (range $14.74 – $44.22)
Most-billed visit code 99203
Established Patient
$103.51 typical visit price
range $19.32 – $144.79
Typical copayment $25.87 (range $4.83 – $36.19)
Most-billed visit code 99214
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 20

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

MRS. PAM K COCKRELL RPH
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
19185 SW 90TH AVE
TUALATIN, OR 97062
Washington County (866) 280-8818
NIKKI ALKIRE LCSW
Social Worker (Clinical)
19185 SW 90TH AVE
TUALATIN, OR 97062
Washington County (503) 885-5205
RYAN CATE PA
Physician Assistant (Medical)
19185 SW 90TH AVE
TUALATIN, OR 97062
Washington County (503) 813-2000
MR. RON MICHELLE HUNT MASTER DEGREE
Counselor (Mental Health)
19185 SW 90TH AVE
TUALATIN, OR 97062
Washington County (503) 885-5357
MS. MARY E. MORRISON PA-C
Physician Assistant (Medical)
19185 SW 90TH AVE
TUALATIN, OR 97062
Washington County (503) 885-7300
LY TIEU-PYKA PT
Physical Therapist
19185 SW 90TH AVE
TUALATIN, OR 97062
Washington County (503) 885-5360
SARAH BREEZE CCC-SLP
Speech-Language Pathologist
19185 SW 90TH AVE
TUALATIN, OR 97062
Washington County (800) 813-2000
MR. DONALD WILLIAM WISSUSIK M.A., M.S.
Counselor (Addiction (Substance Use Disorder))
19185 SW 90TH AVE
TUALATIN, OR 97062
Washington County (503) 885-7376

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 Louis Liu's NPI number?

The NPI number for Louis Liu is 1336259274. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Where is Louis Liu located?

Louis Liu practices at 19185 SW 90th Ave, Tualatin, OR 97062. The listed phone number is (503) 885-7300.

What is Louis Liu's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Louis Liu enrolled in Medicare?

Yes. Louis Liu is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Louis Liu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Louis Liu reassigns Medicare benefits to Beaverton Rehab & Specialty Care, LLC (Beaverton, 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 Louis Liu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Louis Liu was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.