2026 NPPES data General Practice Physician NPI 1902934367 MD
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BRYAN YAMASHIRO, MD

General Practice Physician in WAIPAHU, 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
463
Medicare Part D claims · 285 beneficiaries · General Practice Physician avg: 3K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

BRYAN YAMASHIRO, MD filed 463 Medicare Part D claims in 2023 as a General Practice Physician in WAIPAHU, Hawaii, prescribing 94% generic.

463
Part D claims, 2023
94%
generic prescribing
Likely
board-certified (heuristic)

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.

BRYAN YAMASHIRO, MD's Medicare Part D volume vs every U.S. prescriber

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

463 Top 38% higher than 62% 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 certification likely (heuristic — not verified)

BRYAN YAMASHIRO, MD 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).

What does the federal data show about BRYAN YAMASHIRO, MD?

Quality data not reported

NPI registry status

Active

Issued 02/28/2007

NPI 1902934367

Primary specialty

General Practice Physician

Mid-sized

16,677 US NPIs in this specialty

Medicare Part D claims

463 84% vs specialty avg

2023 prescription claims

Specialty avg: 2,872

Specialty distribution in Hawaii

How General Practice Physician compares to other specialties among Hawaii providers

Hawaii providers

General Practice Physician share within Hawaii

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

Specialty board-certification context

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

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

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

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

BRYAN YAMASHIRO, MD appears in the CMS NPPES registry as a General Practice Physician provider holding MD credentials at 94-1480 MOANIANI ST, WAIPAHU, HI, 96797, with a listed phone of (808) 432-3100. NPI 1902934367 was issued on 02/28/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what YAMASHIRO 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 463 prescription claims written by this provider, covering 285 Medicare beneficiaries and totaling roughly $7K in drug spend, split 6% brand-name and 94% 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.

General Practice Physician is a mid-sized specialty nationwide, with 16,677 enrolled providers across 56 states and an average of 2,872 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

94-1480 MOANIANI ST
WAIPAHU, HI 96797

Provider Details

NPI 1902934367
Specialty General Practice Physician
Credentials MD
Gender Male
NPI Issued 02/28/2007

Hospital and facility affiliations

Facilities where BRYAN YAMASHIRO, MD 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.

KUBO AND BIHIS LLC
MILILANI, 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).

Brand vs generic prescribing mix · Generic-heavy

BRYAN YAMASHIRO, MD — brand share 6.0%
Specialty average (est.)

6% brand-name claims vs 94% generic, on 463 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.

463
Total Claims
$7K
Total Drug Cost
285
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
501
Total Day Supply
7,165
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$640
Generic Drug Cost
$6K
Antibiotic Claims
246

Patient Demographics

Average Patient Age
75.4 years
Avg HCC Risk Score
0.97
Gender Split
66% female / 34% male

Top Prescribed Drugs (Medicare Part D)

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

What BRYAN YAMASHIRO, 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
Azithromycin
85
Fluticasone Propionate
62
Doxycycline Hyclate
57
Cephalexin
38
Albuterol Sulfate Hfa
Albuterol Sulfate
27
Prednisone
26
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
17
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
15
Ciprofloxacin Hcl
12

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

General Practice Physician Overview

How BRYAN YAMASHIRO, MD fits within the General Practice Physician landscape nationally.

16,677
General Practice Physician Providers in US
56
States with General Practice Physician
2,872
Avg Claims per Provider

BRYAN YAMASHIRO, MD's 463 claims are below the specialty average of 2,872.

Nearby General Practice Physician Providers in Hawaii

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

Compare General Practice Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is BRYAN YAMASHIRO, MD's specialty?
BRYAN YAMASHIRO, MD specializes in General Practice Physician and practices in WAIPAHU, Hawaii. Credentials: MD.
How much does BRYAN YAMASHIRO, MD prescribe under Medicare Part D?
In 2023, BRYAN YAMASHIRO, MD wrote 463 Medicare Part D claims totaling $7K in drug costs for 285 beneficiaries.
Where is BRYAN YAMASHIRO, MD located?
BRYAN YAMASHIRO, MD is located at 94-1480 MOANIANI ST, WAIPAHU, HI, 96797. Phone: (808) 432-3100.
What is BRYAN YAMASHIRO, MD's NPI number?
BRYAN YAMASHIRO, MD's National Provider Identifier (NPI) is 1902934367, issued on 02/28/2007.
Does BRYAN YAMASHIRO, MD prescribe more brand-name or generic drugs?
BRYAN YAMASHIRO, MD's prescribing is 6% brand-name and 94% generic drugs by claim count, with $640 in brand drug costs.
How many General Practice Physician providers are there in the US?
There are 16,677 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,872 Medicare Part D claims per year.
What drugs does BRYAN YAMASHIRO, MD prescribe most often?
Based on 2023 Medicare Part D data, BRYAN YAMASHIRO, MD's most frequently prescribed drugs include Azithromycin, Fluticasone Propionate, Doxycycline Hyclate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does BRYAN YAMASHIRO, MD accept Medicare?
BRYAN YAMASHIRO, MD appears in CMS Medicare data with 463 Part D claims and 285 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify BRYAN YAMASHIRO, MD's credentials?
BRYAN YAMASHIRO, MD's NPI is 1902934367 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