2026 NPPES data Surgery of the Hand (Plastic Surgery) Physician NPI 1366519266 MD
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KENNETH LEONG, MD

Surgery of the Hand (Plastic Surgery) Physician in VENTURA, California. 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
72
Medicare Part D claims · 46 beneficiaries · Surgery of the Hand (Plastic Surgery) Physician avg: 106
MIPS score
78.8078/100
▼ 4 pts below national avg 83.1 · [object Object]
Industry payments
$116.36
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: KENNETH LEONG, MD is a Surgery of the Hand (Plastic Surgery) Physician ([object Object]) practicing in VENTURA, California with a Medicare Part D prescribing footprint of 72 claims across 46 beneficiaries . Their CMS MIPS Final Score of 78.8078/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $116.36 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: KENNETH LEONG, MD reported a CMS MIPS final score of 78.8078 out of 100, below the 83.1 national average, and filed 72 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)

KENNETH LEONG, 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).

KENNETH LEONG, MD at a glance

Near national average

NPI registry status

Active

Issued 11/29/2006

NPI 1366519266

Primary specialty

Surgery of the Hand (Plastic Surgery) Physician

Rare

370 US NPIs in this specialty

Medicare Part D claims

72 32% vs specialty avg

2023 prescription claims

Specialty avg: 106

MIPS final score

78.8078/100 4.292199999999994% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How Surgery of the Hand (Plastic Surgery) Physician compares to other specialties among California providers

California providers

Surgery of the Hand (Plastic Surgery) Physician share within California

1. Surgery of the Hand (Plastic Surgery) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Surgery of the Hand (Plastic Surgery) Physician share within California

Medicare quality performance — MIPS

KENNETH LEONG, MD's 2023 MIPS final score plotted against the Surgery of the Hand (Plastic Surgery) Physician national average

Near national average
MIPS Final Score
78.8078/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Surgery of the Hand (Plastic Surgery) Physician) — 78.8078/100 vs national avg 83.1

0%100%National avg83%78.8%
MIPS final score (Surgery of the Hand (Plastic Surgery) Physician) — 78.8078/100 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).

KENNETH LEONG, MD is a Surgery of the Hand (Plastic Surgery) Physician provider practicing in VENTURA, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1366519266. 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.

KENNETH LEONG, MD appears in the CMS NPPES registry as a Surgery of the Hand (Plastic Surgery) Physician provider holding MD credentials at 300 HILLMONT AVE STE 401, VENTURA, CA, 93003, with a listed phone of (805) 648-9830. NPI 1366519266 was issued on 11/29/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LEONG 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 72 prescription claims written by this provider, covering 46 Medicare beneficiaries and totaling roughly $2K in drug spend, with an opioid prescribing rate of 38.9%. 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 78.8078/100 for the 2023 performance year (Quality 79.3772, Cost 50.8156), compared with the national average of 83.1.

Surgery of the Hand (Plastic Surgery) Physician is a narrow specialty nationwide, with 370 enrolled providers across 43 states and an average of 106 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

300 HILLMONT AVE STE 401
VENTURA, CA 93003

Provider Details

NPI 1366519266
Specialty Surgery of the Hand (Plastic Surgery) Physician
Credentials MD
Gender Male
NPI Issued 11/29/2006

CMS Quality Score (MIPS)

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

78.8078
Final Score
Avg: 83.1
79.3772
Quality
50.8156
Cost
99
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where KENNETH LEONG, 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.

COUNTY OF VENTURA
VENTURA, CA

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 KENNETH LEONG, MD. Source: openpaymentsdata.cms.gov.

Total received

$116

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 — California MBC 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 ~150K California medical licensees in 2023 — they are NOT specific to KENNETH LEONG, MD. To verify KENNETH LEONG, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC 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 California 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.

72
Total Claims
$2K
Total Drug Cost
46
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
72
Total Day Supply
552
Generic Drug Cost
$843
Opioid Claims
28 (38.9% rate)
Antibiotic Claims
35

Patient Demographics

Average Patient Age
73.9 years
Avg HCC Risk Score
2.00
Gender Split
59% female / 41% 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
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
16

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

Surgery of the Hand (Plastic Surgery) Physician Overview

How KENNETH LEONG, MD fits within the Surgery of the Hand (Plastic Surgery) Physician landscape nationally.

370
Surgery of the Hand (Plastic Surgery) Physician Providers in US
43
States with Surgery of the Hand (Plastic Surgery) Physician
106
Avg Claims per Provider

KENNETH LEONG, MD's 72 claims are below the specialty average of 106.

Nearby Surgery of the Hand (Plastic Surgery) Physician Providers in California

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

Compare Surgery of the Hand (Plastic Surgery) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KENNETH LEONG, MD's specialty?
KENNETH LEONG, MD specializes in Surgery of the Hand (Plastic Surgery) Physician and practices in VENTURA, California. Credentials: MD.
How much does KENNETH LEONG, MD prescribe under Medicare Part D?
In 2023, KENNETH LEONG, MD wrote 72 Medicare Part D claims totaling $2K in drug costs for 46 beneficiaries.
What is KENNETH LEONG, MD's Medicare quality score?
KENNETH LEONG, MD has a CMS MIPS Final Score of 78.8078/100 (Quality: 79.3772, Cost: 50.8156). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is KENNETH LEONG, MD located?
KENNETH LEONG, MD is located at 300 HILLMONT AVE STE 401, VENTURA, CA, 93003. Phone: (805) 648-9830.
What is KENNETH LEONG, MD's NPI number?
KENNETH LEONG, MD's National Provider Identifier (NPI) is 1366519266, issued on 11/29/2006.
Does KENNETH LEONG, MD prescribe opioids?
Yes, KENNETH LEONG, MD had 28 opioid claims in 2023 with an opioid prescribing rate of 38.9%.
How many Surgery of the Hand (Plastic Surgery) Physician providers are there in the US?
There are 370 Surgery of the Hand (Plastic Surgery) Physician providers across 43 states in the US. The average Surgery of the Hand (Plastic Surgery) Physician provider writes 106 Medicare Part D claims per year.
What drugs does KENNETH LEONG, MD prescribe most often?
Based on 2023 Medicare Part D data, KENNETH LEONG, MD's most frequently prescribed drugs include Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KENNETH LEONG, MD accept Medicare?
KENNETH LEONG, MD appears in CMS Medicare data with 72 Part D claims and 46 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KENNETH LEONG, MD's credentials?
KENNETH LEONG, MD's NPI is 1366519266 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