NPI registry status
Active
2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1528221850 MD
Verify on CMS → Carol Yuan Duclair, MD
Critical Care Medicine (Internal Medicine) Physician in Flemington, New Jersey.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,646 in Critical Care 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
477
Medicare Part D claims · 123 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
31%
generic claims · 69% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$124.99
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Carol Yuan Duclair, MD filed 477 Medicare Part D claims in 2023 as a Critical Care Medicine (Internal Medicine) Physician in Flemington, New Jersey, prescribing 31% generic.
- 477
- Part D claims, 2023
- 31%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥62nd
- pct by Part D claim volume (lower-bound band)
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.
Carol Yuan Duclair, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
477 ≥ 62nd percentile 62% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Carol Yuan Duclair, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations - 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 Carol Yuan Duclair, MD?
Quality data not reportedPrimary specialty
Critical Care Medicine (Internal Medicine) Physician
Medicare Part D claims
477 55% vs specialty avg
Specialty distribution in New Jersey
How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among New Jersey 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 Critical Care 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).
Carol Yuan Duclair, MD appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding MD credentials at 6 SAND HILL RD, Flemington, NJ, 08822, with a listed phone of (908) 237-4080. NPI 1528221850 was issued on 07/07/2008.
Medicare Part D records for calendar year 2023 show 477 prescription claims written by this provider, covering 123 Medicare beneficiaries and totaling roughly $187K in drug spend, split 69% brand-name and 31% generic by claim count.
Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,646 enrolled providers across 53 states and an average of 1,069 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 | 1528221850 |
|---|---|
| Specialty | Critical Care Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 07/07/2008 |
Hospital and facility affiliations
Facilities where Carol Yuan Duclair, MD 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.
According to CMS billing records, Carol Yuan Duclair, MD is affiliated with 3 Medicare-billing facilities across 3 states.
Hospitalist Physicians OF New Jersey PA
Edison, NJ
Princeton Community Hospital Assn. Inc.
Princeton, WV
Wellspan Medical Group
Ephrata, PA
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 Carol Yuan Duclair, MD. Source: openpaymentsdata.cms.gov.
Total received
$125
Largest payer
GlaxoSmithKline, 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 · Brand-heavy
Carol Yuan Duclair, MD - brand share 69.0%
Critical Care Medicine (Internal Medicine) Physician average
69% brand-name claims vs 31% generic, on 477 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.
477
Total Claims
$187K
Total Drug Cost
123
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 622
- Total Day Supply
- 16,889
- Brand vs Generic
- 69% brand / 31% generic
- Brand Drug Cost
- $184K
- Generic Drug Cost
- $3K
- Antibiotic Claims
- 36
Patient Demographics
- Average Patient Age
- 67.9 years
- Avg HCC Risk Score
- 2.01
- Gender Split
- 50% female / 50% male
- Age Distribution
- <65: 40, 65-74: 54, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Carol Yuan Duclair, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Trelegy Ellipta
Trelegy Ellipta
79 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
67 claims
- Prednisone
Prednisone
39 claims
- Symbicort
Symbicort
39 claims
- Montelukast Sodium 30
Montelukast Sodium
30 claims
- Spiriva Respimat 26
Spiriva Respimat
26 claims
- Anoro Ellipta 22
Anoro Ellipta
22 claims
- Azithromycin 15
Azithromycin
15 claims
| Drug | Claims |
|---|---|
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 79 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 67 |
| Prednisone | 39 |
| Symbicort Budesonide/Formoterol Fumarate | 39 |
| Montelukast Sodium | 30 |
| Spiriva Respimat Tiotropium Bromide | 26 |
| Anoro Ellipta Umeclidinium Brm/Vilanterol Tr | 22 |
| Azithromycin | 15 |
| Breo Ellipta Fluticasone/Vilanterol | 15 |
| Ventolin Hfa Albuterol Sulfate | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Critical Care Medicine (Internal Medicine) Physician in NJ →
All providers in New Jersey →
Compare specialties →
Critical Care Medicine (Internal Medicine) Physician Overview
How Carol Yuan Duclair, MD fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.
6,646
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider
Carol Yuan Duclair, MD's 477 claims are below the specialty average of 1,069.
Nearby Critical Care Medicine (Internal Medicine) Physician Providers in New Jersey
Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as Yuan Duclair.
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 New Jersey medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Critical Care 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 Carol Yuan Duclair, MD's specialty? ▼
Carol Yuan Duclair, MD specializes in Critical Care Medicine (Internal Medicine) Physician and practices in Flemington, New Jersey. Credentials: MD.
How much does Carol Yuan Duclair, MD prescribe under Medicare Part D? ▼
In 2023, Carol Yuan Duclair, MD wrote 477 Medicare Part D claims totaling $187K in drug costs for 123 beneficiaries.
Where is Carol Yuan Duclair, MD located? ▼
Carol Yuan Duclair, MD is located at 6 SAND HILL RD, Flemington, NJ, 08822. Phone: (908) 237-4080.
What is Carol Yuan Duclair, MD's NPI number? ▼
Carol Yuan Duclair, MD's National Provider Identifier (NPI) is 1528221850, issued on 07/07/2008.
Does Carol Yuan Duclair, MD prescribe more brand-name or generic drugs? ▼
Carol Yuan Duclair, MD's prescribing is 69% brand-name and 31% generic drugs by claim count, with $184K in brand drug costs.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 6,646 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does Carol Yuan Duclair, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Carol Yuan Duclair, MD's most frequently prescribed drugs include Trelegy Ellipta, Albuterol Sulfate Hfa, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Carol Yuan Duclair, MD accept Medicare? ▼
Carol Yuan Duclair, MD appears in CMS Medicare data with 477 Part D claims and 123 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carol Yuan Duclair, MD's credentials? ▼
Carol Yuan Duclair, MD's NPI is 1528221850 with credentials MD. 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
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.