2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1346356755 M.D.
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ALBERT LEUNG, M.D.

Geriatric Medicine (Internal Medicine) Physician in HONOLULU, Hawaii. 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
9K
Medicare Part D claims · 634 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$3.9K
78 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ALBERT LEUNG, M.D. filed 9,169 Medicare Part D claims in 2023 as a Geriatric Medicine (Internal Medicine) Physician in HONOLULU, Hawaii, prescribing 87% generic.

9K
Part D claims, 2023
87%
generic prescribing
$3.9K
industry payments (Sunshine Act)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

ALBERT LEUNG, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

9,169 Top 2% higher than 98% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

ALBERT LEUNG, 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).

What does the federal data show about ALBERT LEUNG, M.D.?

Quality data not reported

NPI registry status

Active

Issued 08/21/2006

NPI 1346356755

Primary specialty

Geriatric Medicine (Internal Medicine) Physician

Niche

4,161 US NPIs in this specialty

Medicare Part D claims

9,169 106% vs specialty avg

2023 prescription claims

Specialty avg: 4,450

Specialty distribution in Hawaii

How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Hawaii providers

Hawaii providers

Geriatric Medicine (Internal Medicine) Physician share within Hawaii

1. Geriatric Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Geriatric Medicine (Internal Medicine) Physician share within Hawaii

Specialty board-certification context

Estimated specialty board-certified rate — Geriatric Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Geriatric Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Geriatric Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Geriatric Medicine (Internal Medicine) 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).

ALBERT LEUNG, M.D. appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding M.D. credentials at 1481 SOUTH KING STREET, HONOLULU, HI, 96814, with a listed phone of (808) 955-5929. NPI 1346356755 was issued on 08/21/2006. 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 9,169 prescription claims written by this provider, covering 634 Medicare beneficiaries and totaling roughly $1.2 million in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 1.5%. 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.

Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 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

1481 SOUTH KING STREET
HONOLULU, HI 96814

Provider Details

NPI 1346356755
Specialty Geriatric Medicine (Internal Medicine) Physician
Credentials M.D.
Gender Male
NPI Issued 08/21/2006

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 ALBERT LEUNG, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$3.9K

Largest payer

AstraZeneca Pharmaceuticals LP

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.

Brand vs generic prescribing mix · Typical

ALBERT LEUNG, M.D. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 9,169 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.

9,169
Total Claims
$1.2M
Total Drug Cost
634
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
19,922
Total Day Supply
584,973
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$902K
Generic Drug Cost
$244K
Opioid Claims
139 (1.5% rate)
Antibiotic Claims
144

Patient Demographics

Average Patient Age
80.1 years
Avg HCC Risk Score
1.41
Gender Split
60% female / 40% male
Age Distribution
<65: 14, 65-74: 206, 75-84: 182, 85+: 232

Top Prescribed Drugs (Medicare Part D)

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

What ALBERT LEUNG, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
895
Losartan Potassium
449
Amlodipine Besylate
418
Levothyroxine Sodium
304
Olmesartan Medoxomil
300
Metformin Hcl Er
Metformin Hcl
230
Allopurinol
208
Quetiapine Fumarate
184
Rosuvastatin Calcium
176
Simvastatin
170

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

Geriatric Medicine (Internal Medicine) Physician Overview

How ALBERT LEUNG, M.D. fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.

4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider

ALBERT LEUNG, M.D.'s 9,169 claims are above the specialty average of 4,450.

Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Hawaii

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

Compare Geriatric Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ALBERT LEUNG, M.D.'s specialty?
ALBERT LEUNG, M.D. specializes in Geriatric Medicine (Internal Medicine) Physician and practices in HONOLULU, Hawaii. Credentials: M.D..
How much does ALBERT LEUNG, M.D. prescribe under Medicare Part D?
In 2023, ALBERT LEUNG, M.D. wrote 9,169 Medicare Part D claims totaling $1.2M in drug costs for 634 beneficiaries.
Where is ALBERT LEUNG, M.D. located?
ALBERT LEUNG, M.D. is located at 1481 SOUTH KING STREET, HONOLULU, HI, 96814. Phone: (808) 955-5929.
What is ALBERT LEUNG, M.D.'s NPI number?
ALBERT LEUNG, M.D.'s National Provider Identifier (NPI) is 1346356755, issued on 08/21/2006.
Does ALBERT LEUNG, M.D. prescribe more brand-name or generic drugs?
ALBERT LEUNG, M.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $902K in brand drug costs.
Does ALBERT LEUNG, M.D. prescribe opioids?
Yes, ALBERT LEUNG, M.D. had 139 opioid claims in 2023 with an opioid prescribing rate of 1.5%.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US?
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does ALBERT LEUNG, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ALBERT LEUNG, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ALBERT LEUNG, M.D. accept Medicare?
ALBERT LEUNG, M.D. appears in CMS Medicare data with 9,169 Part D claims and 634 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ALBERT LEUNG, M.D.'s credentials?
ALBERT LEUNG, M.D.'s NPI is 1346356755 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