2026 NPPES data Cardiovascular Disease Physician NPI 1205808896 MD
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WAYNE HWANG, MD

Cardiovascular Disease 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
6K
Medicare Part D claims · 711 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
82%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$147.08
2 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: WAYNE HWANG, MD is a Cardiovascular Disease Physician ([object Object]) practicing in SEATTLE, Washington with a Medicare Part D prescribing footprint of 6K claims across 711 beneficiaries — 18% brand-name prescribing . Industry payments of $147.08 across 2 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: WAYNE HWANG, MD filed 5,970 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 certification likely (heuristic — not verified)

WAYNE HWANG, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

WAYNE HWANG, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 02/07/2006

NPI 1205808896

Primary specialty

Cardiovascular Disease Physician

Mid-sized

24,795 US NPIs in this specialty

Medicare Part D claims

5,970 97% vs specialty avg

2023 prescription claims

Specialty avg: 3,033

Specialty distribution in Washington

How Cardiovascular Disease Physician compares to other specialties among Washington providers

Washington providers

Cardiovascular Disease Physician share within Washington

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

Specialty board-certification context

Estimated specialty board-certified rate — Cardiovascular Disease Physician (ABMS / AOA reference)

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

Est. board-certified rate (Cardiovascular Disease Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Cardiovascular Disease 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).

WAYNE HWANG, MD is a Cardiovascular Disease Physician provider practicing in SEATTLE, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1205808896. 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.

WAYNE HWANG, MD appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding MD credentials at 1100 9TH AVE, SEATTLE, WA, 98101, with a listed phone of (206) 341-1111. NPI 1205808896 was issued on 02/07/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HWANG 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 5,970 prescription claims written by this provider, covering 711 Medicare beneficiaries and totaling roughly $1.3 million in drug spend, split 18% brand-name and 82% 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.

Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 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

1100 9TH AVE
SEATTLE, WA 98101

Provider Details

NPI 1205808896
Specialty Cardiovascular Disease Physician
Credentials MD
Gender Male
NPI Issued 02/07/2006

Hospital and facility affiliations

Facilities where WAYNE HWANG, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

VIRGINIA MASON MEDICAL CENTER
★★★★★ 5/5
ISSAQUAH, WA
Acute Care Hospitals
CMS CCN: 500005

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for WAYNE HWANG, MD. Source: openpaymentsdata.cms.gov.

Total received

$147

Largest payer

Medtronic, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

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 WAYNE HWANG, MD. To verify WAYNE HWANG, MD'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 · Typical

WAYNE HWANG, MD — brand share 18.0%
Specialty average (est.)

18% brand-name claims vs 82% generic, on 5,970 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.

5,970
Total Claims
$1.3M
Total Drug Cost
711
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
15,974
Total Day Supply
476,859
Brand vs Generic
18% brand / 82% generic
Brand Drug Cost
$1.2M
Generic Drug Cost
$101K
Antibiotic Claims
23

Patient Demographics

Average Patient Age
76.8 years
Avg HCC Risk Score
1.25
Gender Split
37% female / 63% male
Age Distribution
<65: 13, 65-74: 262, 75-84: 325, 85+: 111

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Metoprolol Succinate
1,018
Atorvastatin Calcium
730
Eliquis
Apixaban
469
Amlodipine Besylate
355
Losartan Potassium
307
Rosuvastatin Calcium
288
Lisinopril
264
Isosorbide Mononitrate Er
Isosorbide Mononitrate
209
Furosemide
207
Clopidogrel
Clopidogrel Bisulfate
197

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

Cardiovascular Disease Physician Overview

How WAYNE HWANG, MD fits within the Cardiovascular Disease Physician landscape nationally.

24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider

WAYNE HWANG, MD's 5,970 claims are above the specialty average of 3,033.

Nearby Cardiovascular Disease Physician Providers in Washington

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

Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WAYNE HWANG, MD's specialty?
WAYNE HWANG, MD specializes in Cardiovascular Disease Physician and practices in SEATTLE, Washington. Credentials: MD.
How much does WAYNE HWANG, MD prescribe under Medicare Part D?
In 2023, WAYNE HWANG, MD wrote 5,970 Medicare Part D claims totaling $1.3M in drug costs for 711 beneficiaries.
Where is WAYNE HWANG, MD located?
WAYNE HWANG, MD is located at 1100 9TH AVE, SEATTLE, WA, 98101. Phone: (206) 341-1111.
What is WAYNE HWANG, MD's NPI number?
WAYNE HWANG, MD's National Provider Identifier (NPI) is 1205808896, issued on 02/07/2006.
Does WAYNE HWANG, MD prescribe more brand-name or generic drugs?
WAYNE HWANG, MD's prescribing is 18% brand-name and 82% generic drugs by claim count, with $1.2M in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US?
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does WAYNE HWANG, MD prescribe most often?
Based on 2023 Medicare Part D data, WAYNE HWANG, MD's most frequently prescribed drugs include Metoprolol Succinate, Atorvastatin Calcium, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WAYNE HWANG, MD accept Medicare?
WAYNE HWANG, MD appears in CMS Medicare data with 5,970 Part D claims and 711 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WAYNE HWANG, MD's credentials?
WAYNE HWANG, MD's NPI is 1205808896 with credentials MD. 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