2026 NPPES data Emergency Medicine Physician NPI 1821381724 MD
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TAKASHI NAKAMURA, MD

Emergency 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
345
Medicare Part D claims · 167 beneficiaries · Emergency Medicine Physician avg: 352

What the federal data shows

TAKASHI NAKAMURA, MD filed 345 Medicare Part D claims in 2023 as a Emergency Medicine Physician in HONOLULU, Hawaii.

345
Part D claims, 2023

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.

TAKASHI NAKAMURA, MD's Medicare Part D volume vs every U.S. prescriber

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

345 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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)

TAKASHI NAKAMURA, MD 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 TAKASHI NAKAMURA, MD?

Quality data not reported

NPI registry status

Active

Issued 05/25/2011

NPI 1821381724

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

345 2% vs specialty avg

2023 prescription claims

Specialty avg: 352

Specialty distribution in Hawaii

How Emergency Medicine Physician compares to other specialties among Hawaii providers

Hawaii providers

Emergency Medicine Physician share within Hawaii

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

Specialty board-certification context

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

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

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

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

TAKASHI NAKAMURA, MD appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding MD credentials at 1000 AUAHI ST APT 2406, HONOLULU, HI, 96814, with a listed phone of (808) 636-9762. NPI 1821381724 was issued on 05/25/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NAKAMURA 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 345 prescription claims written by this provider, covering 167 Medicare beneficiaries and totaling roughly $380K 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.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

1000 AUAHI ST APT 2406
HONOLULU, HI 96814

Provider Details

NPI 1821381724
Specialty Emergency Medicine Physician
Credentials MD
Gender Male
NPI Issued 05/25/2011

Medicare Part D Prescribing Data

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

345
Total Claims
$380K
Total Drug Cost
167
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
394
Total Day Supply
8,518
Generic Drug Cost
$9K
Antibiotic Claims
48

Patient Demographics

Average Patient Age
52.4 years
Avg HCC Risk Score
0.98
Gender Split
70% female / 30% male
Age Distribution
<65: 111, 65-74: 52, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What TAKASHI NAKAMURA, MD 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
Descovy
Emtricitabine/Tenofov Alafenam
151
Fluconazole
53
Metronidazole
38
Emtricitabine-Tenofovir Disop
Emtricitabine/Tenofovir (Tdf)
21
Norethindrone Acetate
14

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

Emergency Medicine Physician Overview

How TAKASHI NAKAMURA, MD fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

TAKASHI NAKAMURA, MD's 345 claims are below the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Hawaii

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

Compare Emergency Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is TAKASHI NAKAMURA, MD's specialty?
TAKASHI NAKAMURA, MD specializes in Emergency Medicine Physician and practices in HONOLULU, Hawaii. Credentials: MD.
How much does TAKASHI NAKAMURA, MD prescribe under Medicare Part D?
In 2023, TAKASHI NAKAMURA, MD wrote 345 Medicare Part D claims totaling $380K in drug costs for 167 beneficiaries.
Where is TAKASHI NAKAMURA, MD located?
TAKASHI NAKAMURA, MD is located at 1000 AUAHI ST APT 2406, HONOLULU, HI, 96814. Phone: (808) 636-9762.
What is TAKASHI NAKAMURA, MD's NPI number?
TAKASHI NAKAMURA, MD's National Provider Identifier (NPI) is 1821381724, issued on 05/25/2011.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does TAKASHI NAKAMURA, MD prescribe most often?
Based on 2023 Medicare Part D data, TAKASHI NAKAMURA, MD's most frequently prescribed drugs include Descovy, Fluconazole, Metronidazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TAKASHI NAKAMURA, MD accept Medicare?
TAKASHI NAKAMURA, MD appears in CMS Medicare data with 345 Part D claims and 167 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TAKASHI NAKAMURA, MD's credentials?
TAKASHI NAKAMURA, MD's NPI is 1821381724 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