2026 NPPES data Emergency Medicine Physician NPI 1164596904 M.D.
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DAVID DOWHAN, M.D.

Emergency Medicine Physician in KULA, 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
99
Medicare Part D claims · 59 beneficiaries · Emergency Medicine Physician avg: 352
What the federal data reveals: DAVID DOWHAN, M.D. is a Emergency Medicine Physician ([object Object]) practicing in KULA, Hawaii with a Medicare Part D prescribing footprint of 99 claims across 59 beneficiaries .

What stands out: DAVID DOWHAN, M.D. filed 99 Medicare Part D claims in 2023 across KULA, Hawaii. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

DAVID DOWHAN, 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).

DAVID DOWHAN, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 11/20/2006

NPI 1164596904

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

99 72% 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).

DAVID DOWHAN, M.D. is a Emergency Medicine Physician provider practicing in KULA, Hawaii, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1164596904. 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.

DAVID DOWHAN, M.D. appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding M.D. credentials at 100 KEOKEA PL, KULA, HI, 96790, with a listed phone of (808) 878-1221. NPI 1164596904 was issued on 11/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DOWHAN 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 99 prescription claims written by this provider, covering 59 Medicare beneficiaries and totaling roughly $2K 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

100 KEOKEA PL
KULA, HI 96790

Provider Details

NPI 1164596904
Specialty Emergency Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 11/20/2006

Hospital and facility affiliations

Facilities where DAVID DOWHAN, 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.

MAUI HEALTH SYSTEM A KAISER FOUNDATION HOSPITALS LLC
WAILUKU, 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).

Medicare Part D Prescribing Data

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

99
Total Claims
$2K
Total Drug Cost
59
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
105
Total Day Supply
1,194
Generic Drug Cost
$891
Antibiotic Claims
43

Patient Demographics

Average Patient Age
73.9 years
Avg HCC Risk Score
0.88
Gender Split
58% female / 42% 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
Cephalexin
18

* 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 DAVID DOWHAN, M.D. 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

DAVID DOWHAN, M.D.'s 99 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 DOWHAN.

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

Frequently Asked Questions

What is DAVID DOWHAN, M.D.'s specialty?
DAVID DOWHAN, M.D. specializes in Emergency Medicine Physician and practices in KULA, Hawaii. Credentials: M.D..
How much does DAVID DOWHAN, M.D. prescribe under Medicare Part D?
In 2023, DAVID DOWHAN, M.D. wrote 99 Medicare Part D claims totaling $2K in drug costs for 59 beneficiaries.
Where is DAVID DOWHAN, M.D. located?
DAVID DOWHAN, M.D. is located at 100 KEOKEA PL, KULA, HI, 96790. Phone: (808) 878-1221.
What is DAVID DOWHAN, M.D.'s NPI number?
DAVID DOWHAN, M.D.'s National Provider Identifier (NPI) is 1164596904, issued on 11/20/2006.
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 DAVID DOWHAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, DAVID DOWHAN, M.D.'s most frequently prescribed drugs include Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DAVID DOWHAN, M.D. accept Medicare?
DAVID DOWHAN, M.D. appears in CMS Medicare data with 99 Part D claims and 59 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DAVID DOWHAN, M.D.'s credentials?
DAVID DOWHAN, M.D.'s NPI is 1164596904 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