Chelsea Ching-Endow, MD
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 172,858 in 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.
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Chelsea Ching-Endow, MD filed 9,656 Medicare Part D claims in 2023 as a Internal Medicine Physician in Honolulu, Hawaii, prescribing 83% generic.
- 10K
- Part D claims, 2023
- 83%
- generic prescribing
- $20.6
- 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.
Chelsea Ching-Endow, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
9,656 Top 2% higher than 98% 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
Chelsea Ching-Endow, 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 Chelsea Ching-Endow, MD?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Hawaii
How Internal Medicine Physician compares to other specialties among Hawaii providers
Largest specialties in Hawaii (% of in-state providers)
Internal Medicine Physician ranks #6 among Hawaii's specialties (3.1% of in-state providers)
Each bar is a specialty's share of the Hawaii provider total, by primary NUCC taxonomy. The highlighted bar is Internal Medicine Physician; the long tail of smaller specialties is omitted for legibility.
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 Internal Medicine Physician. Verify directly:
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).
Chelsea Ching-Endow, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 459 PATTERSON RD, Honolulu, HI, 96819, with a listed phone of (800) 214-1306. NPI 1609087832 was issued on 05/28/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Ching-Endow 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 9,656 prescription claims written by this provider, covering 907 Medicare beneficiaries and totaling roughly $1.9 million in drug spend, split 16% brand-name and 83% generic by claim count, with an opioid prescribing rate of 1.8%. 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.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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 | 1609087832 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/28/2007 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm Chelsea Ching-Endow, 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
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 Chelsea Ching-Endow, MD. Source: openpaymentsdata.cms.gov.
Total received
$21
Largest payer
IDORSIA PHARMACEUTICALS 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
16% brand-name claims vs 83% generic, on 9,656 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
- 23,517
- Total Day Supply
- 683,396
- Brand vs Generic
- 16% brand / 83% generic
- Brand Drug Cost
- $1.6M
- Generic Drug Cost
- $256K
- Opioid Claims
- 176 (1.8% rate)
- Antibiotic Claims
- 551
Patient Demographics
- Average Patient Age
- 74.4 years
- Avg HCC Risk Score
- 1.45
- Gender Split
- 66% female / 34% male
- Age Distribution
- <65: 67, 65-74: 386, 75-84: 347, 85+: 107
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Chelsea Ching-Endow, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
732 claims
- Losartan Potassium
Losartan Potassium
720 claims
- Amlodipine Besylate
Amlodipine Besylate
360 claims
- Levothyroxine Sodium 265
Levothyroxine Sodium
265 claims
- Simvastatin 242
Simvastatin
242 claims
- Omeprazole 224
Omeprazole
224 claims
- Metformin Hcl 219
Metformin Hcl
219 claims
- Ciprofloxacin Hcl 175
Ciprofloxacin Hcl
175 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 732 |
| Losartan Potassium | 720 |
| Amlodipine Besylate | 360 |
| Levothyroxine Sodium | 265 |
| Simvastatin | 242 |
| Omeprazole | 224 |
| Metformin Hcl | 219 |
| Ciprofloxacin Hcl | 175 |
| Metoprolol Succinate | 172 |
| Allopurinol | 171 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Chelsea Ching-Endow, MD fits within the Internal Medicine Physician landscape nationally.
Chelsea Ching-Endow, MD's 9,656 claims are above the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Hawaii
Other clinicians with the same primary specialty enrolled in Hawaii, drawn from the same CMS NPPES roster as Ching-Endow.
Compare 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 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
Explore Hawaii
Frequently Asked Questions
What is Chelsea Ching-Endow, MD's specialty? ▼
How much does Chelsea Ching-Endow, MD prescribe under Medicare Part D? ▼
Where is Chelsea Ching-Endow, MD located? ▼
What is Chelsea Ching-Endow, MD's NPI number? ▼
Does Chelsea Ching-Endow, MD prescribe more brand-name or generic drugs? ▼
Does Chelsea Ching-Endow, MD prescribe opioids? ▼
How many Internal Medicine Physician providers are there in the US? ▼
What drugs does Chelsea Ching-Endow, MD prescribe most often? ▼
Does Chelsea Ching-Endow, MD accept Medicare? ▼
How can I verify Chelsea Ching-Endow, MD's credentials? ▼
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