2026 NPPES data Vascular Surgery Physician NPI 1366880098 M.D.
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NATHAN ITOGA, M.D.

Vascular Surgery 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
213
Medicare Part D claims · 95 beneficiaries · Vascular Surgery Physician avg: 205
Generic prescribing
77%
generic claims · 23% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$8.5K
36 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: NATHAN ITOGA, M.D. is a Vascular Surgery Physician ([object Object]) practicing in HONOLULU, Hawaii with a Medicare Part D prescribing footprint of 213 claims across 95 beneficiaries — 23% brand-name prescribing . Industry payments of $8.5K across 36 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: NATHAN ITOGA, M.D. filed 213 Medicare Part D claims in 2023 across HONOLULU, Hawaii. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

NATHAN ITOGA, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

NATHAN ITOGA, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 06/04/2013

NPI 1366880098

Primary specialty

Vascular Surgery Physician

Niche

4,215 US NPIs in this specialty

Medicare Part D claims

213 4% vs specialty avg

2023 prescription claims

Specialty avg: 205

Specialty distribution in Hawaii

How Vascular Surgery Physician compares to other specialties among Hawaii providers

Hawaii providers

Vascular Surgery Physician share within Hawaii

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

Specialty board-certification context

Estimated specialty board-certified rate — Vascular Surgery Physician (ABMS / AOA reference)

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

Est. board-certified rate (Vascular Surgery Physician) — ABMS / AOA estimate

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

NATHAN ITOGA, M.D. is a Vascular Surgery Physician provider practicing in HONOLULU, Hawaii, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1366880098. 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.

NATHAN ITOGA, M.D. appears in the CMS NPPES registry as a Vascular Surgery Physician provider holding M.D. credentials at 1508 LAUKAHI ST, HONOLULU, HI, 96821, with a listed phone of (808) 295-0319. NPI 1366880098 was issued on 06/04/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ITOGA 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 213 prescription claims written by this provider, covering 95 Medicare beneficiaries and totaling roughly $55K in drug spend, split 23% brand-name and 77% generic by claim count, with an opioid prescribing rate of 33.8%. 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.

Vascular Surgery Physician is a narrow specialty nationwide, with 4,215 enrolled providers across 53 states and an average of 205 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

1508 LAUKAHI ST
HONOLULU, HI 96821

Provider Details

NPI 1366880098
Specialty Vascular Surgery Physician
Credentials M.D.
Gender Male
NPI Issued 06/04/2013

Hospital and facility affiliations

Facilities where NATHAN ITOGA, M.D. 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.

HAWAII VASCULAR AND ENDOVASCULAR INC
HONOLULU, HI

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 NATHAN ITOGA, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$8.5K

Largest payer

Penumbra, 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.

Brand vs generic prescribing mix · Typical

NATHAN ITOGA, M.D. — brand share 23.0%
Specialty average (est.)

23% brand-name claims vs 77% generic, on 213 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.

213
Total Claims
$55K
Total Drug Cost
95
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
293
Total Day Supply
6,421
Brand vs Generic
23% brand / 77% generic
Brand Drug Cost
$54K
Generic Drug Cost
$2K
Opioid Claims
72 (33.8% rate)
Antibiotic Claims
45

Patient Demographics

Average Patient Age
73.2 years
Avg HCC Risk Score
3.97
Gender Split
40% female / 60% male
Age Distribution
<65: 14, 65-74: 37, 75-84: 28, 85+: 16

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
35
Doxycycline Hyclate
29
Clopidogrel
Clopidogrel Bisulfate
26
Eliquis
Apixaban
23
Xarelto
Rivaroxaban
23
Tramadol Hcl
22
Oxycodone Hcl
12

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

Vascular Surgery Physician Overview

How NATHAN ITOGA, M.D. fits within the Vascular Surgery Physician landscape nationally.

4,215
Vascular Surgery Physician Providers in US
53
States with Vascular Surgery Physician
205
Avg Claims per Provider

NATHAN ITOGA, M.D.'s 213 claims are above the specialty average of 205.

Nearby Vascular Surgery Physician Providers in Hawaii

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

Compare Vascular Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is NATHAN ITOGA, M.D.'s specialty?
NATHAN ITOGA, M.D. specializes in Vascular Surgery Physician and practices in HONOLULU, Hawaii. Credentials: M.D..
How much does NATHAN ITOGA, M.D. prescribe under Medicare Part D?
In 2023, NATHAN ITOGA, M.D. wrote 213 Medicare Part D claims totaling $55K in drug costs for 95 beneficiaries.
Where is NATHAN ITOGA, M.D. located?
NATHAN ITOGA, M.D. is located at 1508 LAUKAHI ST, HONOLULU, HI, 96821. Phone: (808) 295-0319.
What is NATHAN ITOGA, M.D.'s NPI number?
NATHAN ITOGA, M.D.'s National Provider Identifier (NPI) is 1366880098, issued on 06/04/2013.
Does NATHAN ITOGA, M.D. prescribe more brand-name or generic drugs?
NATHAN ITOGA, M.D.'s prescribing is 23% brand-name and 77% generic drugs by claim count, with $54K in brand drug costs.
Does NATHAN ITOGA, M.D. prescribe opioids?
Yes, NATHAN ITOGA, M.D. had 72 opioid claims in 2023 with an opioid prescribing rate of 33.8%.
How many Vascular Surgery Physician providers are there in the US?
There are 4,215 Vascular Surgery Physician providers across 53 states in the US. The average Vascular Surgery Physician provider writes 205 Medicare Part D claims per year.
What drugs does NATHAN ITOGA, M.D. prescribe most often?
Based on 2023 Medicare Part D data, NATHAN ITOGA, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Doxycycline Hyclate, Clopidogrel. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NATHAN ITOGA, M.D. accept Medicare?
NATHAN ITOGA, M.D. appears in CMS Medicare data with 213 Part D claims and 95 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NATHAN ITOGA, M.D.'s credentials?
NATHAN ITOGA, M.D.'s NPI is 1366880098 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