2026 NPPES data Nephrology Physician NPI 1881693463 MD
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TONY LEUNG, MD

Nephrology Physician in LAKE CHARLES, Louisiana. 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
764
Medicare Part D claims · 150 beneficiaries · Nephrology Physician avg: 1K
MIPS score
18.9051/100
▼ 64 pts below national avg 83.1 · [object Object]
What the federal data reveals: TONY LEUNG, MD is a Nephrology Physician ([object Object]) practicing in LAKE CHARLES, Louisiana with a Medicare Part D prescribing footprint of 764 claims across 150 beneficiaries . Their CMS MIPS Final Score of 18.9051/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: TONY LEUNG, MD reported a CMS MIPS final score of 18.9051 out of 100, below the 83.1 national average, and filed 764 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)

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

TONY LEUNG, MD at a glance

Below national average

NPI registry status

Active

Issued 07/18/2005

NPI 1881693463

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

764 47% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

MIPS final score

18.9051/100 64.19489999999999% pts

Below average band

vs 83.1 national avg

Specialty distribution in Louisiana

How Nephrology Physician compares to other specialties among Louisiana providers

Louisiana providers

Nephrology Physician share within Louisiana

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

Medicare quality performance — MIPS

TONY LEUNG, MD's 2023 MIPS final score plotted against the Nephrology Physician national average

Below national average
MIPS Final Score
18.9051/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nephrology Physician) — 18.9051/100 vs national avg 83.1

0%100%National avg83%18.9%
MIPS final score (Nephrology Physician) — 18.9051/100 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).

TONY LEUNG, MD is a Nephrology Physician provider practicing in LAKE CHARLES, Louisiana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1881693463. 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.

TONY LEUNG, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 105 S RYAN ST, LAKE CHARLES, LA, 70601, with a listed phone of (337) 497-0366. NPI 1881693463 was issued on 07/18/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LEUNG 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 764 prescription claims written by this provider, covering 150 Medicare beneficiaries and totaling roughly $300K 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 18.9051/100 for the 2023 performance year (Quality 0, Cost 63.0171), compared with the national average of 83.1.

Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 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

105 S RYAN ST
LAKE CHARLES, LA 70601

Provider Details

NPI 1881693463
Specialty Nephrology Physician
Credentials MD
Gender Male
NPI Issued 07/18/2005

CMS Quality Score (MIPS)

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

18.9051
Final Score
Avg: 83.1
0
Quality
63.0171
Cost

Reporting: Individual

Medicare Part D Prescribing Data

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

764
Total Claims
$300K
Total Drug Cost
150
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,591
Total Day Supply
47,317
Generic Drug Cost
$36K

Patient Demographics

Average Patient Age
64.8 years
Avg HCC Risk Score
6.07
Gender Split
57% female / 43% male
Age Distribution
<65: 61, 65-74: 58, 75-84: 20, 85+: 11

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Sevelamer Carbonate
82
Velphoro
Sucroferric Oxyhydroxide
68
Furosemide
53
Carvedilol
52
Amlodipine Besylate
32
Losartan Potassium
29
Pantoprazole Sodium
26
Labetalol Hcl
19
Auryxia
Ferric Citrate
18
Nifedipine Er
Nifedipine
17

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

Nephrology Physician Overview

How TONY LEUNG, MD fits within the Nephrology Physician landscape nationally.

10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider

TONY LEUNG, MD's 764 claims are below the specialty average of 1,454.

Nearby Nephrology Physician Providers in Louisiana

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

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

Frequently Asked Questions

What is TONY LEUNG, MD's specialty?
TONY LEUNG, MD specializes in Nephrology Physician and practices in LAKE CHARLES, Louisiana. Credentials: MD.
How much does TONY LEUNG, MD prescribe under Medicare Part D?
In 2023, TONY LEUNG, MD wrote 764 Medicare Part D claims totaling $300K in drug costs for 150 beneficiaries.
What is TONY LEUNG, MD's Medicare quality score?
TONY LEUNG, MD has a CMS MIPS Final Score of 18.9051/100 (Quality: 0, Cost: 63.0171). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is TONY LEUNG, MD located?
TONY LEUNG, MD is located at 105 S RYAN ST, LAKE CHARLES, LA, 70601. Phone: (337) 497-0366.
What is TONY LEUNG, MD's NPI number?
TONY LEUNG, MD's National Provider Identifier (NPI) is 1881693463, issued on 07/18/2005.
How many Nephrology Physician providers are there in the US?
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does TONY LEUNG, MD prescribe most often?
Based on 2023 Medicare Part D data, TONY LEUNG, MD's most frequently prescribed drugs include Sevelamer Carbonate, Velphoro, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TONY LEUNG, MD accept Medicare?
TONY LEUNG, MD appears in CMS Medicare data with 764 Part D claims and 150 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TONY LEUNG, MD's credentials?
TONY LEUNG, MD's NPI is 1881693463 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