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DR. GENE S. J. LIAW M.D.
NPI 1427231323
General Practice in Seattle, WA

Active since December 13, 2007PECOS EnrolledAccepts Medicare Assignment
662 S JACKSON ST, UNIT A, SEATTLE, WA 98104(206) 623-0733(206) 623-1014 Get Directions Write a Review

NPPES record last updated: April 22, 2014. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Dr. Gene S. J. Liaw M.d. NPPES

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

DR. GENE S. J. LIAW M.D. (NPI 1427231323) is an individual general practice provider in Seattle, Washington, licensed in Washington (MD00022484) and active in the NPI registry since December 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1974).

NPPES Registry Identity

NPI1427231323
Entity TypeIndividualMale
Primary Taxonomy208D00000X
Provider Legal NameDR. GENE S. J. LIAWCredential: M.D.
Location Address662 S JACKSON ST, UNIT ASeattle, WA 98104-2929
Mailing Address662a S. Jackson St.Seattle, WA 98104 · (206) 623-0733 · Fax (206) 623-1014
Phone(206) 623-0733
Fax(206) 623-1014
Sole ProprietorNo
Medical School CMSOtherGraduated 1974
Enumeration DateDecember 13, 2007
Last NPPES UpdateApril 22, 2014
✔ NPI 1427231323 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
License✔ Licensed in WA · MD00022484
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
662 S JACKSON ST, Seattle, WA 98104
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Other Identifiers 1

Medicare PING8801038WA

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

Dr. Gene S. J. Liaw M.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 ID8729071840
PECOS Enrollment IDI20040413001787
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 Gene Liaw reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Gene S J Liaw MD Ps
Same address
General Practice
662A S JACKSON ST
Seattle, WA 98104
  • Reassigned Medicare billing, Washington enrollment
  • Medicare enrollment name: Gene S J Liaw M D P S
NPI 1174632392 (206) 623-0733

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 7

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 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.
67 services24 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
57 services22 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.
31 services18 patients
Ultrasound study of arm and leg arteries 93922
An ultrasound study of arm and leg arteries is a non-invasive procedure that uses sound waves to create images of your arteries. It helps in checking blood flow, identifying blockages, or detecting other abnormalities in your arteries.
19 services17 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
19 services19 patients
Urinalysis, manual test 81002
A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.
16 services12 patients

Other Providers at the Same Location NPPES

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

XINMINS ACUPUNCTURE AND DRC
Acupuncturist
662 S JACKSON ST
SEATTLE, WA 98104
King County (206) 223-8268

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 Gene Liaw's NPI number?

The NPI number for Gene Liaw is 1427231323. It was assigned to this individual provider in the NPPES registry on December 13, 2007.

Where is Gene Liaw located?

Gene Liaw practices at 662 S Jackson St Unit A, Seattle, WA 98104. The listed phone number is (206) 623-0733.

What is Gene Liaw's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is Gene Liaw enrolled in Medicare?

Yes. Gene Liaw 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 Gene Liaw's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gene Liaw reassigns Medicare benefits to Gene S J Liaw MD Ps (Seattle, WA). 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 Gene Liaw'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 Gene Liaw was last updated on April 22, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.