2026 NPPES data Ophthalmology Physician NPI 1518974021 MD
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CARL MINATOYA, MD

Ophthalmology 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
528
Medicare Part D claims · 171 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
23%
generic claims · 77% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

CARL MINATOYA, MD filed 528 Medicare Part D claims in 2023 as a Ophthalmology Physician in HONOLULU, Hawaii, prescribing 23% generic.

528
Part D claims, 2023
23%
generic prescribing

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.

CARL MINATOYA, MD's Medicare Part D volume vs every U.S. prescriber

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

528 Top 34% higher than 66% 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%). This entry sits in this band. 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)

CARL MINATOYA, 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 CARL MINATOYA, MD?

Quality data not reported

NPI registry status

Active

Issued 08/01/2006

NPI 1518974021

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

528 63% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

Specialty distribution in Hawaii

How Ophthalmology Physician compares to other specialties among Hawaii providers

Hawaii providers

Ophthalmology Physician share within Hawaii

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

Specialty board-certification context

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

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

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

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

CARL MINATOYA, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 1003 PENSACOLA ST, HONOLULU, HI, 96814, with a listed phone of (808) 597-1133. NPI 1518974021 was issued on 08/01/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MINATOYA 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 528 prescription claims written by this provider, covering 171 Medicare beneficiaries and totaling roughly $199K in drug spend, split 77% brand-name and 23% 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.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

1003 PENSACOLA ST
HONOLULU, HI 96814

Provider Details

NPI 1518974021
Specialty Ophthalmology Physician
Credentials MD
Gender Male
NPI Issued 08/01/2006

Brand vs generic prescribing mix · Brand-heavy

CARL MINATOYA, MD — brand share 77.0%
Specialty average (est.)

77% brand-name claims vs 23% generic, on 528 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.

528
Total Claims
$199K
Total Drug Cost
171
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
966
Total Day Supply
27,830
Brand vs Generic
77% brand / 23% generic
Brand Drug Cost
$194K
Generic Drug Cost
$5K

Patient Demographics

Average Patient Age
81.0 years
Avg HCC Risk Score
1.18
Gender Split
63% female / 37% male
Age Distribution
<65: 0, 65-74: 40, 75-84: 75, 85+: 56

Top Prescribed Drugs (Medicare Part D)

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

What CARL MINATOYA, 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
Lumigan
Bimatoprost
128
Latanoprost
102
Rhopressa
Netarsudil Mesylate
75
Levobunolol Hcl
31
Restasis
Cyclosporine
29
Rocklatan
Netarsudil Mesylat/Latanoprost
27
Vyzulta
Latanoprostene Bunod
22
Dorzolamide Hcl
18
Prolensa
Bromfenac Sodium
14
Timolol Maleate
13

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

Ophthalmology Physician Overview

How CARL MINATOYA, MD fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

CARL MINATOYA, MD's 528 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Hawaii

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

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

Frequently Asked Questions

What is CARL MINATOYA, MD's specialty?
CARL MINATOYA, MD specializes in Ophthalmology Physician and practices in HONOLULU, Hawaii. Credentials: MD.
How much does CARL MINATOYA, MD prescribe under Medicare Part D?
In 2023, CARL MINATOYA, MD wrote 528 Medicare Part D claims totaling $199K in drug costs for 171 beneficiaries.
Where is CARL MINATOYA, MD located?
CARL MINATOYA, MD is located at 1003 PENSACOLA ST, HONOLULU, HI, 96814. Phone: (808) 597-1133.
What is CARL MINATOYA, MD's NPI number?
CARL MINATOYA, MD's National Provider Identifier (NPI) is 1518974021, issued on 08/01/2006.
Does CARL MINATOYA, MD prescribe more brand-name or generic drugs?
CARL MINATOYA, MD's prescribing is 77% brand-name and 23% generic drugs by claim count, with $194K in brand drug costs.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does CARL MINATOYA, MD prescribe most often?
Based on 2023 Medicare Part D data, CARL MINATOYA, MD's most frequently prescribed drugs include Lumigan, Latanoprost, Rhopressa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CARL MINATOYA, MD accept Medicare?
CARL MINATOYA, MD appears in CMS Medicare data with 528 Part D claims and 171 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CARL MINATOYA, MD's credentials?
CARL MINATOYA, MD's NPI is 1518974021 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