NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1073590725 M.D.
Verify on CMS → Abraham Chyung, M.D.
Neurology Physician in Honolulu, Hawaii.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 19,866 in Neurology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
559
Medicare Part D claims · 161 beneficiaries · Neurology Physician avg: 1K
MIPS score
63.5/100
▼ 20 pts below national avg 83.1 · Mid-tier
Industry payments
$886.6
36 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Abraham Chyung, M.D. reported a CMS MIPS final score of 63.5/100 - below the 83.1 national average - and filed 559 Medicare Part D claims in 2023.
- 63.5/100
- MIPS score · -20 vs avg
- 559
- Part D claims, 2023
- 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.
Abraham Chyung, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
64 6th percentile higher than 6% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Abraham Chyung, M.D. sits
This provider among neurology physician peers
Across the 5,437 neurology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Abraham Chyung, M.D. writes more Part D claims than 36% of them and scores higher on MIPS quality than 8% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one neurology physician peer from a representative sample of 60; the gold marker is Abraham Chyung, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Abraham Chyung, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Abraham Chyung, M.D.?
Below national averagePrimary specialty
Neurology Physician
Medicare Part D claims
559 57% vs specialty avg
MIPS final score
63.5/100 19.6 pts vs avg
Specialty distribution in Hawaii
How Neurology Physician compares to other specialties among Hawaii providers
Medicare quality performance, MIPS
Abraham Chyung, M.D.'s 2023 MIPS final score plotted against the Neurology Physician national average
- MIPS Final Score
- 63.5/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Neurology Physician) - 63.5/100 vs national avg 83.1
How MIPS and board certification work
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).
Abraham Chyung, M.D. appears in the CMS NPPES registry as a Neurology Physician provider holding M.D. credentials at 550 S BERETANIA ST STE 405, Honolulu, HI, 96813, with a listed phone of (808) 691-8866. NPI 1073590725 was issued on 12/23/2005.
Medicare Part D records for calendar year 2023 show 559 prescription claims written by this provider, covering 161 Medicare beneficiaries and totaling roughly $98K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 63.5/100 for the 2023 performance year (Quality 31.6, Cost 63.5), compared with the national average of 83.1.
Neurology Physician is a mid-sized specialty nationwide, with 19,866 enrolled providers across 54 states and an average of 1,309 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
Provider Details
| NPI | 1073590725 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 12/23/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
63.5304
Final Score
Avg: 83.1
31.5604
Quality
63.541
Cost
80
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Abraham Chyung, 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.
Queens University Medical Group
Honolulu, 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).
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 Abraham Chyung, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$887
Largest payer
Alexion Pharmaceuticals, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
559
Total Claims
$98K
Total Drug Cost
161
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,124
- Total Day Supply
- 32,971
- Generic Drug Cost
- $39K
Patient Demographics
- Average Patient Age
- 78.1 years
- Avg HCC Risk Score
- 1.62
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 17, 65-74: 22, 75-84: 77, 85+: 45
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Abraham Chyung, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Memantine Hcl
Memantine Hcl
125 claims
- Donepezil Hcl
Donepezil Hcl
100 claims
- Lamotrigine
Lamotrigine
64 claims
- Levetiracetam 33
Levetiracetam
33 claims
- Lacosamide 25
Lacosamide
25 claims
- Carbamazepine 23
Carbamazepine
23 claims
- Gabapentin 20
Gabapentin
20 claims
- Divalproex Sodium 16
Divalproex Sodium
16 claims
| Drug | Claims |
|---|---|
| Memantine Hcl | 125 |
| Donepezil Hcl | 100 |
| Lamotrigine | 64 |
| Levetiracetam | 33 |
| Lacosamide | 25 |
| Carbamazepine | 23 |
| Gabapentin | 20 |
| Divalproex Sodium | 16 |
| Quetiapine Fumarate | 16 |
| Topiramate | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How Abraham Chyung, M.D. fits within the Neurology Physician landscape nationally.
19,866
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider
Abraham Chyung, M.D.'s 559 claims are below the specialty average of 1,309.
Nearby Neurology Physician Providers in Hawaii
Other clinicians with the same primary specialty enrolled in Hawaii, drawn from the same CMS NPPES roster as Chyung.
Dr. Gabriele Barthlen
M.D.
Pearl City, HI
Dr. Elizabeth Blalock
MD
Honolulu, HI
Dr. Michiko Bruno
M.D.
Honolulu, HI
Dr. Brent Burroughs
M.D.
Ewa Beach, HI
Dr. Sharin Burton
MD
Honolulu, HI
Compare Neurology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Hawaii medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Neurology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Medical Specialties Explained
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Frequently Asked Questions
What is Abraham Chyung, M.D.'s specialty? ▼
Abraham Chyung, M.D. specializes in Neurology Physician and practices in Honolulu, Hawaii. Credentials: M.D..
How much does Abraham Chyung, M.D. prescribe under Medicare Part D? ▼
In 2023, Abraham Chyung, M.D. wrote 559 Medicare Part D claims totaling $98K in drug costs for 161 beneficiaries.
What is Abraham Chyung, M.D.'s Medicare quality score? ▼
Abraham Chyung, M.D. has a CMS MIPS Final Score of 63.5/100 (Quality: 31.6, Cost: 63.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Abraham Chyung, M.D. located? ▼
Abraham Chyung, M.D. is located at 550 S BERETANIA ST STE 405, Honolulu, HI, 96813. Phone: (808) 691-8866.
What is Abraham Chyung, M.D.'s NPI number? ▼
Abraham Chyung, M.D.'s National Provider Identifier (NPI) is 1073590725, issued on 12/23/2005.
How many Neurology Physician providers are there in the US? ▼
There are 19,866 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does Abraham Chyung, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Abraham Chyung, M.D.'s most frequently prescribed drugs include Memantine Hcl, Donepezil Hcl, Lamotrigine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Abraham Chyung, M.D. accept Medicare? ▼
Abraham Chyung, M.D. appears in CMS Medicare data with 559 Part D claims and 161 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Abraham Chyung, M.D.'s credentials? ▼
Abraham Chyung, M.D.'s NPI is 1073590725 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
View source datasets and methodology notes
- 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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
Compiled from official public sources by the PlainDoctor editorial team.