2026 NPPES data Obstetrics & Gynecology Physician NPI 1932494812 M.D.
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STEPHEN SUNG, M.D.

Obstetrics & Gynecology Physician in AIEA, 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
525
Medicare Part D claims · 204 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$542.39
16 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

STEPHEN SUNG, M.D. filed 525 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in AIEA, Hawaii, prescribing 79% generic.

525
Part D claims, 2023
79%
generic prescribing
$542.39
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.

STEPHEN SUNG, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

525 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)

STEPHEN SUNG, 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 STEPHEN SUNG, M.D.?

Quality data not reported

NPI registry status

Active

Issued 06/18/2011

NPI 1932494812

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

525 193% 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).

STEPHEN SUNG, M.D. appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding M.D. credentials at 98-1079 MOANALUA RD STE 560, AIEA, HI, 96701, with a listed phone of (808) 487-0078. NPI 1932494812 was issued on 06/18/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SUNG 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 525 prescription claims written by this provider, covering 204 Medicare beneficiaries and totaling roughly $153K in drug spend, split 21% brand-name and 79% 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

98-1079 MOANALUA RD STE 560
AIEA, HI 96701

Provider Details

NPI 1932494812
Specialty Obstetrics & Gynecology Physician
Credentials M.D.
Gender Male
NPI Issued 06/18/2011

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 STEPHEN SUNG, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$542

Largest payer

Astellas Pharma US 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

STEPHEN SUNG, M.D. — brand share 21.0%
Specialty average (est.)

21% brand-name claims vs 79% generic, on 525 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.

525
Total Claims
$153K
Total Drug Cost
204
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,395
Total Day Supply
40,033
Brand vs Generic
21% brand / 79% generic
Brand Drug Cost
$139K
Generic Drug Cost
$14K
Antibiotic Claims
34

Patient Demographics

Average Patient Age
74.3 years
Avg HCC Risk Score
0.75
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 STEPHEN SUNG, 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
181
Prolia
Denosumab
46
Clotrimazole-Betamethasone
Clotrimazole/Betamethasone Dip
40
Estradiol
37
Evenity (2 Syringes)
Romosozumab-Aqqg
21
Raloxifene Hcl
20
Fluconazole
18
Triamcinolone Acetonide
17
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
15
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 STEPHEN SUNG, 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

STEPHEN SUNG, M.D.'s 525 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 SUNG.

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

Frequently Asked Questions

What is STEPHEN SUNG, M.D.'s specialty?
STEPHEN SUNG, M.D. specializes in Obstetrics & Gynecology Physician and practices in AIEA, Hawaii. Credentials: M.D..
How much does STEPHEN SUNG, M.D. prescribe under Medicare Part D?
In 2023, STEPHEN SUNG, M.D. wrote 525 Medicare Part D claims totaling $153K in drug costs for 204 beneficiaries.
Where is STEPHEN SUNG, M.D. located?
STEPHEN SUNG, M.D. is located at 98-1079 MOANALUA RD STE 560, AIEA, HI, 96701. Phone: (808) 487-0078.
What is STEPHEN SUNG, M.D.'s NPI number?
STEPHEN SUNG, M.D.'s National Provider Identifier (NPI) is 1932494812, issued on 06/18/2011.
Does STEPHEN SUNG, M.D. prescribe more brand-name or generic drugs?
STEPHEN SUNG, M.D.'s prescribing is 21% brand-name and 79% generic drugs by claim count, with $139K 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 STEPHEN SUNG, M.D. prescribe most often?
Based on 2023 Medicare Part D data, STEPHEN SUNG, M.D.'s most frequently prescribed drugs include Alendronate Sodium, Prolia, Clotrimazole-Betamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEPHEN SUNG, M.D. accept Medicare?
STEPHEN SUNG, M.D. appears in CMS Medicare data with 525 Part D claims and 204 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEPHEN SUNG, M.D.'s credentials?
STEPHEN SUNG, M.D.'s NPI is 1932494812 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