NPI registry status
Active
2026 NPPES data Sports Medicine (Internal Medicine) Physician NPI 1477544468 M.D.
Verify on CMS → Daven Chun, M.D.
Sports Medicine (Internal Medicine) 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 295 in Sports Medicine (Internal Medicine) 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
4K
Medicare Part D claims · 270 beneficiaries · Sports Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
80%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$15.89
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Daven Chun, M.D. filed 3,611 Medicare Part D claims in 2023 as a Sports Medicine (Internal Medicine) Physician in Honolulu, Hawaii, prescribing 80% generic.
- 4K
- Part D claims, 2023
- 80%
- generic prescribing
- $15.89
- 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.
Daven Chun, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,611 Top 9% higher than 91% of 1,370,886 prescribers
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)
Daven Chun, 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 Daven Chun, M.D.?
Quality data not reportedPrimary specialty
Sports Medicine (Internal Medicine) Physician
Medicare Part D claims
3,611 185% vs specialty avg
Specialty distribution in Hawaii
How Sports Medicine (Internal Medicine) Physician compares to other specialties among Hawaii providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Sports Medicine (Internal Medicine) Physician. Verify directly:
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).
Daven Chun, M.D. appears in the CMS NPPES registry as a Sports Medicine (Internal Medicine) Physician provider holding M.D. credentials at 321 N KUAKINI ST, Honolulu, HI, 96817, with a listed phone of (808) 533-4274. NPI 1477544468 was issued on 10/31/2005.
Medicare Part D records for calendar year 2023 show 3,611 prescription claims written by this provider, covering 270 Medicare beneficiaries and totaling roughly $869K in drug spend, split 18% brand-name and 80% generic by claim count.
Sports Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 295 enrolled providers across 43 states and an average of 1,267 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 | 1477544468 |
|---|---|
| Specialty | Sports Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/31/2005 |
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 Daven Chun, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$16
Largest payer
Lilly USA, LLC
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
Daven Chun, M.D. - brand share 18.0%
Sports Medicine (Internal Medicine) Physician average
18% brand-name claims vs 80% generic, on 3,611 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.
3,611
Total Claims
$869K
Total Drug Cost
270
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,170
- Total Day Supply
- 271,006
- Brand vs Generic
- 18% brand / 80% generic
- Brand Drug Cost
- $732K
- Generic Drug Cost
- $134K
- Antibiotic Claims
- 61
Patient Demographics
- Average Patient Age
- 79.1 years
- Avg HCC Risk Score
- 1.24
- Gender Split
- 50% female / 50% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Daven Chun, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
308 claims
- Amlodipine Besylate
Amlodipine Besylate
205 claims
- Levothyroxine Sodium
Levothyroxine Sodium
139 claims
- Simvastatin
Simvastatin
125 claims
- Amlodipine Besylat… 108
Amlodipine Besylate-Benazepril
108 claims
- Montelukast Sodium 99
Montelukast Sodium
99 claims
- Losartan Potassium 88
Losartan Potassium
88 claims
- Metoprolol Succinate 88
Metoprolol Succinate
88 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 308 |
| Amlodipine Besylate | 205 |
| Levothyroxine Sodium | 139 |
| Simvastatin | 125 |
| Amlodipine Besylate-Benazepril Amlodipine Besylate/Benazepril | 108 |
| Montelukast Sodium | 99 |
| Losartan Potassium | 88 |
| Metoprolol Succinate | 88 |
| Famotidine | 77 |
| Jardiance Empagliflozin | 72 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Sports Medicine (Internal Medicine) Physician in HI →
All providers in Hawaii →
Compare specialties →
Sports Medicine (Internal Medicine) Physician Overview
How Daven Chun, M.D. fits within the Sports Medicine (Internal Medicine) Physician landscape nationally.
295
Sports Medicine (Internal Medicine) Physician Providers in US
43
States with Sports Medicine (Internal Medicine) Physician
1,267
Avg Claims per Provider
Daven Chun, M.D.'s 3,611 claims are above the specialty average of 1,267.
Nearby Sports Medicine (Internal Medicine) Physician Providers in Hawaii
Other clinicians with the same primary specialty enrolled in Hawaii, drawn from the same CMS NPPES roster as Chun.
Dr. Gary Ahn
MD
Honolulu, HI
Dr. Clayton Everline
MD, FACP, FAWM, CSCS
Aiea, HI
Dr. Amanda Haley
MD
Honolulu, HI
Dr. Robert Kagawa
MD
Honolulu, HI
Dr. Inam Rahman
MD
Honolulu, HI
Compare Sports Medicine (Internal Medicine) 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 Sports Medicine (Internal Medicine) 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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Frequently Asked Questions
What is Daven Chun, M.D.'s specialty? ▼
Daven Chun, M.D. specializes in Sports Medicine (Internal Medicine) Physician and practices in Honolulu, Hawaii. Credentials: M.D..
How much does Daven Chun, M.D. prescribe under Medicare Part D? ▼
In 2023, Daven Chun, M.D. wrote 3,611 Medicare Part D claims totaling $869K in drug costs for 270 beneficiaries.
Where is Daven Chun, M.D. located? ▼
Daven Chun, M.D. is located at 321 N KUAKINI ST, Honolulu, HI, 96817. Phone: (808) 533-4274.
What is Daven Chun, M.D.'s NPI number? ▼
Daven Chun, M.D.'s National Provider Identifier (NPI) is 1477544468, issued on 10/31/2005.
Does Daven Chun, M.D. prescribe more brand-name or generic drugs? ▼
Daven Chun, M.D.'s prescribing is 18% brand-name and 80% generic drugs by claim count, with $732K in brand drug costs.
How many Sports Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 295 Sports Medicine (Internal Medicine) Physician providers across 43 states in the US. The average Sports Medicine (Internal Medicine) Physician provider writes 1,267 Medicare Part D claims per year.
What drugs does Daven Chun, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Daven Chun, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Daven Chun, M.D. accept Medicare? ▼
Daven Chun, M.D. appears in CMS Medicare data with 3,611 Part D claims and 270 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Daven Chun, M.D.'s credentials? ▼
Daven Chun, M.D.'s NPI is 1477544468 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.
- 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.