NPI registry status
Active
2026 NPPES data Registered Nurse NPI 1922466374 ANP-BC
Verify on CMS → Karen Carthew, ANP-BC
Registered Nurse in New York, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 175,652 in Registered Nurse, 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
94
Medicare Part D claims · 53 beneficiaries · Registered Nurse avg: 1K
MIPS score
90.8/100
▲ 8 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Karen Carthew, ANP-BC reported a CMS MIPS final score of 90.8/100 - above the 83.1 national average - and filed 94 Medicare Part D claims in 2023.
- 90.8/100
- MIPS score · +8 vs avg
- 94
- Part D claims, 2023
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.
Karen Carthew, ANP-BC's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
91 Top 40% higher than 60% 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 Karen Carthew, ANP-BC sits
This provider among registered nurse peers
Across the 3,327 registered nurse providers who report both Medicare Part D prescribing and a MIPS quality score, Karen Carthew, ANP-BC writes more Part D claims than 23% of them and scores higher on MIPS quality than 63% - placing this provider in the lower-volume, high-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 registered nurse peer from a representative sample of 60; the gold marker is Karen Carthew, ANP-BC. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Karen Carthew, ANP-BC?
High performer (top quartile)Primary specialty
Registered Nurse
Medicare Part D claims
94 91% vs specialty avg
MIPS final score
90.8/100 7.7 pts vs avg
Specialty distribution in New York
How Registered Nurse compares to other specialties among New York providers
Medicare quality performance, MIPS
Karen Carthew, ANP-BC's 2023 MIPS final score plotted against the Registered Nurse national average
- MIPS Final Score
- 90.8/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Registered Nurse) - 90.8/100 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).
Karen Carthew, ANP-BC appears in the CMS NPPES registry as a Registered Nurse provider holding ANP-BC credentials at 1275 YORK AVE, New York, NY, 10065, with a listed phone of (212) 639-6450. NPI 1922466374 was issued on 01/31/2016.
Medicare Part D records for calendar year 2023 show 94 prescription claims written by this provider, covering 53 Medicare beneficiaries and totaling roughly $4K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 90.8/100 for the 2023 performance year (Quality 87.9), compared with the national average of 83.1.
Registered Nurse is a high-volume specialty nationwide, with 175,652 enrolled providers across 56 states and an average of 1,000 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 | 1922466374 |
|---|---|
| Specialty | Registered Nurse |
| Credentials | ANP-BC |
| Gender | Female |
| NPI Issued | 01/31/2016 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
90.761
Final Score
Avg: 83.1
87.872
Quality
Reporting: Group practice
Hospital and facility affiliations
Facilities where Karen Carthew, ANP-BC 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.
Mskcc Surgery Group
New York, NY
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - New York NYSBPMC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~100K New York medical licensees in 2023 - they are NOT specific to Karen Carthew, ANP-BC. To verify Karen Carthew, ANP-BC's current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
94
Total Claims
$4K
Total Drug Cost
53
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 109
- Total Day Supply
- 1,865
- Generic Drug Cost
- $3K
- Antibiotic Claims
- 34
Patient Demographics
- Average Patient Age
- 71.7 years
- Avg HCC Risk Score
- 1.83
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Metronidazole | 13 |
| Nystatin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Registered Nurse Overview
How Karen Carthew, ANP-BC fits within the Registered Nurse landscape nationally.
175,652
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider
Karen Carthew, ANP-BC's 94 claims are below the specialty average of 1,000.
Nearby Registered Nurse Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Carthew.
Dr. Sharon A'Court-Zingman
R.N.
Bay Shore, NY
Momna Aakel
Brooklyn, NY
Dr. Hannah Aakjar
RN
Beacon, NY
Dr. Rivqa Rhonda Aaronson
RN
Brooklyn, NY
Stephanie Aaronson
Spring Valley, NY
Compare Registered Nurse 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 New York medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Registered Nurse 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
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Karen Carthew, ANP-BC's specialty? ▼
Karen Carthew, ANP-BC specializes in Registered Nurse and practices in New York, New York. Credentials: ANP-BC.
How much does Karen Carthew, ANP-BC prescribe under Medicare Part D? ▼
In 2023, Karen Carthew, ANP-BC wrote 94 Medicare Part D claims totaling $4K in drug costs for 53 beneficiaries.
What is Karen Carthew, ANP-BC's Medicare quality score? ▼
Karen Carthew, ANP-BC has a CMS MIPS Final Score of 90.8/100 (Quality: 87.9). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Karen Carthew, ANP-BC located? ▼
Karen Carthew, ANP-BC is located at 1275 YORK AVE, New York, NY, 10065. Phone: (212) 639-6450.
What is Karen Carthew, ANP-BC's NPI number? ▼
Karen Carthew, ANP-BC's National Provider Identifier (NPI) is 1922466374, issued on 01/31/2016.
How many Registered Nurse providers are there in the US? ▼
There are 175,652 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,000 Medicare Part D claims per year.
What drugs does Karen Carthew, ANP-BC prescribe most often? ▼
Based on 2023 Medicare Part D data, Karen Carthew, ANP-BC's most frequently prescribed drugs include Metronidazole, Nystatin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Karen Carthew, ANP-BC accept Medicare? ▼
Karen Carthew, ANP-BC appears in CMS Medicare data with 94 Part D claims and 53 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Karen Carthew, ANP-BC's credentials? ▼
Karen Carthew, ANP-BC's NPI is 1922466374 with credentials ANP-BC. 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.