NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1871667154 MD
Verify on CMS → Catherine Newton, MD
Ophthalmology Physician in Louisville, Kentucky.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 22,082 in Ophthalmology 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
34
Medicare Part D claims · 17 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
65%
generic claims · 35% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.2/100
▼ 10 pts below national avg 83.1 · Mid-tier
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
Catherine Newton, MD reported a CMS MIPS final score of 73.2/100 - below the 83.1 national average - and filed 34 Medicare Part D claims in 2023.
- 73.2/100
- MIPS score · -10 vs avg
- 34
- Part D claims, 2023
- 65%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Catherine Newton, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
73 11th percentile higher than 11% 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 Catherine Newton, MD sits
This provider among ophthalmology physician peers
Across the 9,866 ophthalmology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Catherine Newton, MD writes more Part D claims than 2% of them and scores higher on MIPS quality than 11% - placing this provider in the lower-volume, lower-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 ophthalmology physician peer from a representative sample of 60; the gold marker is Catherine Newton, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Catherine Newton, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Catherine Newton, MD?
Below national averagePrimary specialty
Ophthalmology Physician
Medicare Part D claims
34 98% vs specialty avg
MIPS final score
73.2/100 9.9 pts vs avg
Specialty distribution in Kentucky
How Ophthalmology Physician compares to other specialties among Kentucky providers
Medicare quality performance, MIPS
Catherine Newton, MD's 2023 MIPS final score plotted against the Ophthalmology Physician national average
- MIPS Final Score
- 73.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Ophthalmology Physician) - 73.2/100 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).
Catherine Newton, MD appears in the CMS NPPES registry as an Ophthalmology Physician provider holding MD credentials at 1536 STORY AVE, Louisville, KY, 40206, with a listed phone of (502) 589-1500. NPI 1871667154 was issued on 11/20/2006.
Medicare Part D records for calendar year 2023 show 34 prescription claims written by this provider, covering 17 Medicare beneficiaries and totaling roughly $1K in drug spend, split 35% brand-name and 65% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.2/100 for the 2023 performance year (Quality 58.7, Cost 51.9), compared with the national average of 83.1.
Ophthalmology Physician is a mid-sized specialty nationwide, with 22,082 enrolled providers across 56 states and an average of 1,420 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 | 1871667154 |
|---|---|
| Specialty | Ophthalmology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 11/20/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.1977
Final Score
Avg: 83.1
58.7401
Quality
51.919
Cost
100
Promoting Interoperability
Reporting: Group practice
Brand vs generic prescribing mix · Above average
Catherine Newton, MD - brand share 35.0%
Ophthalmology Physician average
35% brand-name claims vs 65% generic, on 34 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.
34
Total Claims
$1K
Total Drug Cost
17
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 51
- Total Day Supply
- 1,281
- Brand vs Generic
- 35% brand / 65% generic
- Brand Drug Cost
- $742
- Generic Drug Cost
- $379
Patient Demographics
- Average Patient Age
- 72.5 years
- Avg HCC Risk Score
- 1.01
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Prednisolone Acetate | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Ophthalmology Physician Overview
How Catherine Newton, MD fits within the Ophthalmology Physician landscape nationally.
22,082
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider
Catherine Newton, MD's 34 claims are below the specialty average of 1,420.
Nearby Ophthalmology Physician Providers in Kentucky
Other clinicians with the same primary specialty enrolled in Kentucky, drawn from the same CMS NPPES roster as Newton.
Dr. Thomas Abell
OPHTHALMOLGIST M.D.
Campbellsville, KY
Dr. Richard Abrahamson
MD
Newport, KY
Dr. Janelle Adeniran
M.D.
Louisville, KY
Dr. Romulo Albuquerque
MD
Lexington, KY
Dr. Zegary Allen
M.D., PH.D.
Florence, KY
Compare Ophthalmology 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 Kentucky medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Ophthalmology 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 Catherine Newton, MD's specialty? ▼
Catherine Newton, MD specializes in Ophthalmology Physician and practices in Louisville, Kentucky. Credentials: MD.
How much does Catherine Newton, MD prescribe under Medicare Part D? ▼
In 2023, Catherine Newton, MD wrote 34 Medicare Part D claims totaling $1K in drug costs for 17 beneficiaries.
What is Catherine Newton, MD's Medicare quality score? ▼
Catherine Newton, MD has a CMS MIPS Final Score of 73.2/100 (Quality: 58.7, Cost: 51.9). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Catherine Newton, MD located? ▼
Catherine Newton, MD is located at 1536 STORY AVE, Louisville, KY, 40206. Phone: (502) 589-1500.
What is Catherine Newton, MD's NPI number? ▼
Catherine Newton, MD's National Provider Identifier (NPI) is 1871667154, issued on 11/20/2006.
Does Catherine Newton, MD prescribe more brand-name or generic drugs? ▼
Catherine Newton, MD's prescribing is 35% brand-name and 65% generic drugs by claim count, with $742 in brand drug costs.
How many Ophthalmology Physician providers are there in the US? ▼
There are 22,082 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does Catherine Newton, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Catherine Newton, MD's most frequently prescribed drugs include Prednisolone Acetate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Catherine Newton, MD accept Medicare? ▼
Catherine Newton, MD appears in CMS Medicare data with 34 Part D claims and 17 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Catherine Newton, MD's credentials? ▼
Catherine Newton, MD's NPI is 1871667154 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.
- 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.
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.