2026 NPPES data Obstetrics & Gynecology Physician NPI 1942394945 M.D.
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DIANA HUANG, M.D.

Obstetrics & Gynecology 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
301
Medicare Part D claims · 122 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
73%
generic claims · 27% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$272.33
11 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

DIANA HUANG, M.D. filed 301 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in HONOLULU, Hawaii, prescribing 73% generic.

301
Part D claims, 2023
73%
generic prescribing
$272.33
industry payments (Sunshine Act)

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.

DIANA HUANG, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

301 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 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)

DIANA HUANG, M.D. 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 DIANA HUANG, M.D.?

Quality data not reported

NPI registry status

Active

Issued 10/03/2006

NPI 1942394945

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

301 68% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in Hawaii

How Obstetrics & Gynecology Physician compares to other specialties among Hawaii providers

Hawaii providers

Obstetrics & Gynecology Physician share within Hawaii

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

Specialty board-certification context

Estimated specialty board-certified rate — Obstetrics & Gynecology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Obstetrics & Gynecology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Obstetrics & Gynecology 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).

DIANA HUANG, M.D. appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding M.D. credentials at 1441 KAPIOLANI BOULEVARD, HONOLULU, HI, 96814, with a listed phone of (808) 949-5308. NPI 1942394945 was issued on 10/03/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HUANG 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 301 prescription claims written by this provider, covering 122 Medicare beneficiaries and totaling roughly $96K in drug spend, split 27% brand-name and 73% 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.

Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 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

1441 KAPIOLANI BOULEVARD
HONOLULU, HI 96814

Provider Details

NPI 1942394945
Specialty Obstetrics & Gynecology Physician
Credentials M.D.
Gender Female
NPI Issued 10/03/2006

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 DIANA HUANG, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$272

Largest payer

Amgen 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 · Above average

DIANA HUANG, M.D. — brand share 27.0%
Specialty average (est.)

27% brand-name claims vs 73% generic, on 301 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.

301
Total Claims
$96K
Total Drug Cost
122
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
875
Total Day Supply
25,519
Brand vs Generic
27% brand / 73% generic
Brand Drug Cost
$84K
Generic Drug Cost
$12K

Patient Demographics

Average Patient Age
73.6 years
Avg HCC Risk Score
0.71
Gender Split
100% female / 0% male

Top Prescribed Drugs (Medicare Part D)

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

What DIANA HUANG, M.D. 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
Alendronate Sodium
73
Prolia
Denosumab
44
Estradiol
35
Raloxifene Hcl
20
Valacyclovir
Valacyclovir Hcl
18
Estradiol (Once Weekly)
Estradiol
11
Premarin
"Estrogens
N/A

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

Obstetrics & Gynecology Physician Overview

How DIANA HUANG, M.D. fits within the Obstetrics & Gynecology Physician landscape nationally.

44,313
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider

DIANA HUANG, M.D.'s 301 claims are above the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in Hawaii

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

Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is DIANA HUANG, M.D.'s specialty?
DIANA HUANG, M.D. specializes in Obstetrics & Gynecology Physician and practices in HONOLULU, Hawaii. Credentials: M.D..
How much does DIANA HUANG, M.D. prescribe under Medicare Part D?
In 2023, DIANA HUANG, M.D. wrote 301 Medicare Part D claims totaling $96K in drug costs for 122 beneficiaries.
Where is DIANA HUANG, M.D. located?
DIANA HUANG, M.D. is located at 1441 KAPIOLANI BOULEVARD, HONOLULU, HI, 96814. Phone: (808) 949-5308.
What is DIANA HUANG, M.D.'s NPI number?
DIANA HUANG, M.D.'s National Provider Identifier (NPI) is 1942394945, issued on 10/03/2006.
Does DIANA HUANG, M.D. prescribe more brand-name or generic drugs?
DIANA HUANG, M.D.'s prescribing is 27% brand-name and 73% generic drugs by claim count, with $84K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US?
There are 44,313 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does DIANA HUANG, M.D. prescribe most often?
Based on 2023 Medicare Part D data, DIANA HUANG, M.D.'s most frequently prescribed drugs include Alendronate Sodium, Prolia, Estradiol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DIANA HUANG, M.D. accept Medicare?
DIANA HUANG, M.D. appears in CMS Medicare data with 301 Part D claims and 122 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DIANA HUANG, M.D.'s credentials?
DIANA HUANG, M.D.'s NPI is 1942394945 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