2026 NPPES data General Practice Physician NPI 1427231323 M.D.
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GENE LIAW, M.D.

General Practice Physician in SEATTLE, Washington. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
3K
Medicare Part D claims · 194 beneficiaries · General Practice Physician avg: 3K
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: GENE LIAW, M.D. is a General Practice Physician ([object Object]) practicing in SEATTLE, Washington with a Medicare Part D prescribing footprint of 3K claims across 194 beneficiaries — 4% brand-name prescribing .

What stands out: GENE LIAW, M.D. filed 3,449 Medicare Part D claims in 2023 across SEATTLE, Washington. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

GENE LIAW, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

GENE LIAW, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 12/13/2007

NPI 1427231323

Primary specialty

General Practice Physician

Mid-sized

16,677 US NPIs in this specialty

Medicare Part D claims

3,449 20% vs specialty avg

2023 prescription claims

Specialty avg: 2,872

Specialty distribution in Washington

How General Practice Physician compares to other specialties among Washington providers

Washington providers

General Practice Physician share within Washington

1. General Practice Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
General Practice Physician share within Washington

Specialty board-certification context

Estimated specialty board-certified rate — General Practice Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
General Practice Physician ABMS/AOA estimate

Est. board-certified rate (General Practice Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (General Practice Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

GENE LIAW, M.D. is a General Practice Physician provider practicing in SEATTLE, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1427231323. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

GENE LIAW, M.D. appears in the CMS NPPES registry as a General Practice Physician provider holding M.D. credentials at 662 S JACKSON ST, SEATTLE, WA, 98104, with a listed phone of (206) 623-0733. NPI 1427231323 was issued on 12/13/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LIAW most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 3,449 prescription claims written by this provider, covering 194 Medicare beneficiaries and totaling roughly $145K in drug spend, split 4% brand-name and 96% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

General Practice Physician is a mid-sized specialty nationwide, with 16,677 enrolled providers across 56 states and an average of 2,872 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

662 S JACKSON ST
SEATTLE, WA 98104

Provider Details

NPI 1427231323
Specialty General Practice Physician
Credentials M.D.
Gender Male
NPI Issued 12/13/2007

License & disciplinary context — Washington WMC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~34K Washington medical licensees in 2023 — they are NOT specific to GENE LIAW, M.D.. To verify GENE LIAW, M.D.'s current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases

WMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

GENE LIAW, M.D. — brand share 4.0%
Specialty average (est.)

4% brand-name claims vs 96% generic, on 3,449 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

3,449
Total Claims
$145K
Total Drug Cost
194
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,698
Total Day Supply
256,465
Brand vs Generic
4% brand / 96% generic
Brand Drug Cost
$75K
Generic Drug Cost
$70K
Antibiotic Claims
50

Patient Demographics

Average Patient Age
77.1 years
Avg HCC Risk Score
1.19
Gender Split
54% female / 46% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Atorvastatin Calcium
290
Amlodipine Besylate
280
Losartan Potassium
256
Metoprolol Succinate
168
Rosuvastatin Calcium
153
Lisinopril
138
Metformin Hcl
136
Tamsulosin Hcl
124
Pravastatin Sodium
121
Glipizide Er
Glipizide
97

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

General Practice Physician Overview

How GENE LIAW, M.D. fits within the General Practice Physician landscape nationally.

16,677
General Practice Physician Providers in US
56
States with General Practice Physician
2,872
Avg Claims per Provider

GENE LIAW, M.D.'s 3,449 claims are above the specialty average of 2,872.

Nearby General Practice Physician Providers in Washington

Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as LIAW.

Compare General Practice Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GENE LIAW, M.D.'s specialty?
GENE LIAW, M.D. specializes in General Practice Physician and practices in SEATTLE, Washington. Credentials: M.D..
How much does GENE LIAW, M.D. prescribe under Medicare Part D?
In 2023, GENE LIAW, M.D. wrote 3,449 Medicare Part D claims totaling $145K in drug costs for 194 beneficiaries.
Where is GENE LIAW, M.D. located?
GENE LIAW, M.D. is located at 662 S JACKSON ST, SEATTLE, WA, 98104. Phone: (206) 623-0733.
What is GENE LIAW, M.D.'s NPI number?
GENE LIAW, M.D.'s National Provider Identifier (NPI) is 1427231323, issued on 12/13/2007.
Does GENE LIAW, M.D. prescribe more brand-name or generic drugs?
GENE LIAW, M.D.'s prescribing is 4% brand-name and 96% generic drugs by claim count, with $75K in brand drug costs.
How many General Practice Physician providers are there in the US?
There are 16,677 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,872 Medicare Part D claims per year.
What drugs does GENE LIAW, M.D. prescribe most often?
Based on 2023 Medicare Part D data, GENE LIAW, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GENE LIAW, M.D. accept Medicare?
GENE LIAW, M.D. appears in CMS Medicare data with 3,449 Part D claims and 194 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GENE LIAW, M.D.'s credentials?
GENE LIAW, M.D.'s NPI is 1427231323 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology