MARK CHUNG, MD
Family Medicine Physician in KAILUA, Hawaii. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
MARK CHUNG, MD filed 2,015 Medicare Part D claims in 2023 as a Family Medicine Physician in KAILUA, Hawaii, prescribing 92% generic.
- 2K
- Part D claims, 2023
- 92%
- generic prescribing
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.
MARK CHUNG, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
2,015 Top 16% higher than 84% 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
MARK CHUNG, MD 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 MARK CHUNG, MD?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Hawaii
How Family Medicine Physician compares to other specialties among Hawaii providers
Family Medicine Physician share within Hawaii
Family Medicine Physician is one of the more visible NUCC categories in Hawaii
Each bar reflects the share of in-state providers whose primary NUCC taxonomy matches the specialty. Long tail of ~690 NUCC codes folded into "Other" to keep the comparison legible.
Specialty board-certification context
Estimated specialty board-certified rate — Family Medicine Physician (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Family Medicine Physician ABMS/AOA estimate
Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Family Medicine Physician US NPIs
Specialty board-certified rate — Family Medicine Physician estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
MARK CHUNG, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 40 AULIKE ST, KAILUA, HI, 96734, with a listed phone of (808) 262-2424. NPI 1972673416 was issued on 11/09/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHUNG 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 2,015 prescription claims written by this provider, covering 173 Medicare beneficiaries and totaling roughly $177K in drug spend, split 8% brand-name and 92% 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.
Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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 | 1972673416 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 11/09/2006 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm MARK CHUNG, MD's current license status, disciplinary history, and board certifications with the Hawaii Medical Board in Hawaii before relying on this page for a clinical or care decision.
How we sourced this profile
Brand vs generic prescribing mix · Generic-heavy
8% brand-name claims vs 92% generic, on 2,015 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.
Prescribing Breakdown
- 30-Day Fills
- 5,452
- Total Day Supply
- 161,267
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $128K
- Generic Drug Cost
- $48K
- Antibiotic Claims
- 43
Patient Demographics
- Average Patient Age
- 76.9 years
- Avg HCC Risk Score
- 1.30
- Gender Split
- 46% female / 54% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What MARK CHUNG, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
356 claims
- Ezetimibe 96
Ezetimibe
96 claims
- Lisinopril 94
Lisinopril
94 claims
- Losartan Potassium 83
Losartan Potassium
83 claims
- Amlodipine Besylate 82
Amlodipine Besylate
82 claims
- Metformin Hcl 73
Metformin Hcl
73 claims
- Levothyroxine Sodium 58
Levothyroxine Sodium
58 claims
- Irbesartan 51
Irbesartan
51 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 356 |
| Ezetimibe | 96 |
| Lisinopril | 94 |
| Losartan Potassium | 83 |
| Amlodipine Besylate | 82 |
| Metformin Hcl | 73 |
| Levothyroxine Sodium | 58 |
| Irbesartan | 51 |
| Olmesartan Medoxomil | 50 |
| Rosuvastatin Calcium | 47 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How MARK CHUNG, MD fits within the Family Medicine Physician landscape nationally.
MARK CHUNG, MD's 2,015 claims are below the specialty average of 3,418.
Nearby Family Medicine Physician Providers in Hawaii
Other clinicians with the same primary specialty enrolled in Hawaii, drawn from the same CMS NPPES roster as CHUNG.
Compare Family Medicine Physician nationally: see state-by-state distribution →
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Frequently Asked Questions
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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