2026 NPPES data Surgery Physician NPI 1861548455 MD
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AARON CHENG, MD

Surgery 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
42
Medicare Part D claims · Surgery Physician avg: 169
MIPS score
93.0932/100
▲ 10 pts above national avg 83.1 · [object Object]
What the federal data reveals: AARON CHENG, MD is a Surgery Physician ([object Object]) practicing in SEATTLE, Washington with a Medicare Part D prescribing footprint of 42 claims . Their CMS MIPS Final Score of 93.0932/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: AARON CHENG, MD reported a CMS MIPS final score of 93.0932 out of 100, above the 83.1 national average, and filed 42 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

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

AARON CHENG, MD at a glance

High performer (top quartile)

NPI registry status

Active

Issued 01/26/2007

NPI 1861548455

Primary specialty

Surgery Physician

Mid-sized

36,191 US NPIs in this specialty

Medicare Part D claims

42 75% vs specialty avg

2023 prescription claims

Specialty avg: 169

MIPS final score

93.0932/100 9.993200000000002% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Washington

How Surgery Physician compares to other specialties among Washington providers

Washington providers

Surgery Physician share within Washington

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

Medicare quality performance — MIPS

AARON CHENG, MD's 2023 MIPS final score plotted against the Surgery Physician national average

High performer (top quartile)
MIPS Final Score
93.0932/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Surgery Physician) — 93.0932/100 vs national avg 83.1

0%100%National avg83%93.1%
MIPS final score (Surgery Physician) — 93.0932/100 vs national avg 83.1

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).

AARON CHENG, MD is a Surgery Physician provider practicing in SEATTLE, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1861548455. 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.

AARON CHENG, MD appears in the CMS NPPES registry as a Surgery Physician provider holding MD credentials at 1959 NE PACIFIC ST, SEATTLE, WA, 98195, with a listed phone of (206) 221-2504. NPI 1861548455 was issued on 01/26/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHENG 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 42 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $2K in drug spend. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 93.0932/100 for the 2023 performance year (Quality 73.9573), compared with the national average of 83.1.

Surgery Physician is a mid-sized specialty nationwide, with 36,191 enrolled providers across 56 states and an average of 169 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

1959 NE PACIFIC ST
SEATTLE, WA 98195

Provider Details

NPI 1861548455
Specialty Surgery Physician
Credentials MD
Gender Male
NPI Issued 01/26/2007

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

93.0932
Final Score
Avg: 83.1
73.9573
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where AARON CHENG, 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.

THE ASSOCIATION OF UNIVERSITY PHYSICIANS
SEATTLE, WA

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

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 AARON CHENG, MD. To verify AARON CHENG, 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.

Medicare Part D Prescribing Data

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

42
Total Claims
$2K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
42
Total Day Supply
1,122
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
70.0 years
Avg HCC Risk Score
1.42

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Diltiazem 24hr Er (Cd)
Diltiazem Hcl
13
Levetiracetam
13

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

Surgery Physician Overview

How AARON CHENG, MD fits within the Surgery Physician landscape nationally.

36,191
Surgery Physician Providers in US
56
States with Surgery Physician
169
Avg Claims per Provider

AARON CHENG, MD's 42 claims are below the specialty average of 169.

Nearby Surgery Physician Providers in Washington

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

Compare Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is AARON CHENG, MD's specialty?
AARON CHENG, MD specializes in Surgery Physician and practices in SEATTLE, Washington. Credentials: MD.
How much does AARON CHENG, MD prescribe under Medicare Part D?
In 2023, AARON CHENG, MD wrote 42 Medicare Part D claims totaling $2K in drug costs for N/A beneficiaries.
What is AARON CHENG, MD's Medicare quality score?
AARON CHENG, MD has a CMS MIPS Final Score of 93.0932/100 (Quality: 73.9573). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is AARON CHENG, MD located?
AARON CHENG, MD is located at 1959 NE PACIFIC ST, SEATTLE, WA, 98195. Phone: (206) 221-2504.
What is AARON CHENG, MD's NPI number?
AARON CHENG, MD's National Provider Identifier (NPI) is 1861548455, issued on 01/26/2007.
How many Surgery Physician providers are there in the US?
There are 36,191 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 169 Medicare Part D claims per year.
What drugs does AARON CHENG, MD prescribe most often?
Based on 2023 Medicare Part D data, AARON CHENG, MD's most frequently prescribed drugs include Diltiazem 24hr Er (Cd), Levetiracetam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AARON CHENG, MD accept Medicare?
AARON CHENG, MD appears in CMS Medicare data with 42 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AARON CHENG, MD's credentials?
AARON CHENG, MD's NPI is 1861548455 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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