2026 NPPES data Cardiovascular Disease Physician NPI 1538160866 M.D., FACC
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NEAL SHIKUMA, M.D., FACC

Cardiovascular Disease Physician in KAMUELA, 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
254
Medicare Part D claims · 92 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$126.53
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: NEAL SHIKUMA, M.D., FACC is a Cardiovascular Disease Physician ([object Object]) practicing in KAMUELA, Hawaii with a Medicare Part D prescribing footprint of 254 claims across 92 beneficiaries — 26% brand-name prescribing . Industry payments of $126.53 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: NEAL SHIKUMA, M.D., FACC filed 254 Medicare Part D claims in 2023 across KAMUELA, Hawaii. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

NEAL SHIKUMA, M.D., FACC 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).

NEAL SHIKUMA, M.D., FACC at a glance

Quality data not reported

NPI registry status

Active

Issued 08/09/2005

NPI 1538160866

Primary specialty

Cardiovascular Disease Physician

Mid-sized

24,795 US NPIs in this specialty

Medicare Part D claims

254 92% vs specialty avg

2023 prescription claims

Specialty avg: 3,033

Specialty distribution in Hawaii

How Cardiovascular Disease Physician compares to other specialties among Hawaii providers

Hawaii providers

Cardiovascular Disease Physician share within Hawaii

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

Specialty board-certification context

Estimated specialty board-certified rate — Cardiovascular Disease Physician (ABMS / AOA reference)

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

Est. board-certified rate (Cardiovascular Disease Physician) — ABMS / AOA estimate

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

NEAL SHIKUMA, M.D., FACC is a Cardiovascular Disease Physician provider practicing in KAMUELA, Hawaii, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D., FACC. NPI: 1538160866. 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.

NEAL SHIKUMA, M.D., FACC appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding M.D., FACC credentials at 65-1230 MAMALAHOA HWY, KAMUELA, HI, 96743, with a listed phone of (808) 887-6410. NPI 1538160866 was issued on 08/09/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SHIKUMA 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 254 prescription claims written by this provider, covering 92 Medicare beneficiaries and totaling roughly $93K in drug spend, split 26% brand-name and 74% generic by claim count. 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.

Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 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

65-1230 MAMALAHOA HWY
KAMUELA, HI 96743

Provider Details

NPI 1538160866
Specialty Cardiovascular Disease Physician
Credentials M.D., FACC
Gender Male
NPI Issued 08/09/2005

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 NEAL SHIKUMA, M.D., FACC. Source: openpaymentsdata.cms.gov.

Total received

$127

Largest payer

Boston Scientific Corporation

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 · Above average

NEAL SHIKUMA, M.D., FACC — brand share 26.0%
Specialty average (est.)

26% brand-name claims vs 74% generic, on 254 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.

254
Total Claims
$93K
Total Drug Cost
92
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
691
Total Day Supply
20,701
Brand vs Generic
26% brand / 74% generic
Brand Drug Cost
$84K
Generic Drug Cost
$9K

Patient Demographics

Average Patient Age
77.6 years
Avg HCC Risk Score
1.62
Gender Split
43% female / 57% 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
Eliquis
Apixaban
37
Metoprolol Succinate
32
Atorvastatin Calcium
28
Losartan Potassium
13
Amlodipine Besylate
12

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

Cardiovascular Disease Physician Overview

How NEAL SHIKUMA, M.D., FACC fits within the Cardiovascular Disease Physician landscape nationally.

24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider

NEAL SHIKUMA, M.D., FACC's 254 claims are below the specialty average of 3,033.

Nearby Cardiovascular Disease Physician Providers in Hawaii

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

Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is NEAL SHIKUMA, M.D., FACC's specialty?
NEAL SHIKUMA, M.D., FACC specializes in Cardiovascular Disease Physician and practices in KAMUELA, Hawaii. Credentials: M.D., FACC.
How much does NEAL SHIKUMA, M.D., FACC prescribe under Medicare Part D?
In 2023, NEAL SHIKUMA, M.D., FACC wrote 254 Medicare Part D claims totaling $93K in drug costs for 92 beneficiaries.
Where is NEAL SHIKUMA, M.D., FACC located?
NEAL SHIKUMA, M.D., FACC is located at 65-1230 MAMALAHOA HWY, KAMUELA, HI, 96743. Phone: (808) 887-6410.
What is NEAL SHIKUMA, M.D., FACC's NPI number?
NEAL SHIKUMA, M.D., FACC's National Provider Identifier (NPI) is 1538160866, issued on 08/09/2005.
Does NEAL SHIKUMA, M.D., FACC prescribe more brand-name or generic drugs?
NEAL SHIKUMA, M.D., FACC's prescribing is 26% brand-name and 74% generic drugs by claim count, with $84K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US?
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does NEAL SHIKUMA, M.D., FACC prescribe most often?
Based on 2023 Medicare Part D data, NEAL SHIKUMA, M.D., FACC's most frequently prescribed drugs include Eliquis, Metoprolol Succinate, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NEAL SHIKUMA, M.D., FACC accept Medicare?
NEAL SHIKUMA, M.D., FACC appears in CMS Medicare data with 254 Part D claims and 92 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NEAL SHIKUMA, M.D., FACC's credentials?
NEAL SHIKUMA, M.D., FACC's NPI is 1538160866 with credentials M.D., FACC. 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