NPI registry status
Active
2026 NPPES data Hematology (Internal Medicine) Physician NPI 1043308570 MD
Verify on CMS → Arthur Rabinowitz, MD
Hematology (Internal Medicine) Physician in Burlington, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,451 in Hematology (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
59
Medicare Part D claims · 30 beneficiaries · Hematology (Internal Medicine) Physician avg: 693
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
91.4/100
▲ 8 pts above national avg 83.1 · Exceptional
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
Arthur Rabinowitz, MD reported a CMS MIPS final score of 91.4/100 - above the 83.1 national average - and filed 59 Medicare Part D claims in 2023.
- 91.4/100
- MIPS score · +8 vs avg
- 59
- Part D claims, 2023
- 76%
- 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.
Arthur Rabinowitz, MD'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 37% higher than 63% 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 Arthur Rabinowitz, MD sits
This provider among hematology (internal medicine) physician peers
Across the 570 hematology (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Arthur Rabinowitz, MD writes more Part D claims than 8% of them and scores higher on MIPS quality than 66% - 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 hematology (internal medicine) physician peer from a representative sample of 60; the gold marker is Arthur Rabinowitz, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Arthur Rabinowitz, 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 Arthur Rabinowitz, MD?
High performer (top quartile)Primary specialty
Hematology (Internal Medicine) Physician
Medicare Part D claims
59 91% vs specialty avg
MIPS final score
91.4/100 8.3 pts vs avg
Specialty distribution in Massachusetts
How Hematology (Internal Medicine) Physician compares to other specialties among Massachusetts providers
Medicare quality performance, MIPS
Arthur Rabinowitz, MD's 2023 MIPS final score plotted against the Hematology (Internal Medicine) Physician national average
- MIPS Final Score
- 91.4/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Hematology (Internal Medicine) Physician) - 91.4/100 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).
Arthur Rabinowitz, MD appears in the CMS NPPES registry as a Hematology (Internal Medicine) Physician provider holding MD credentials at LAHEY CLINIC, Burlington, MA, 01805, with a listed phone of (781) 744-8400. NPI 1043308570 was issued on 10/10/2006.
Medicare Part D records for calendar year 2023 show 59 prescription claims written by this provider, covering 30 Medicare beneficiaries and totaling roughly $192K in drug spend, split 24% brand-name and 76% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 91.4/100 for the 2023 performance year (Quality 76.9), compared with the national average of 83.1.
Hematology (Internal Medicine) Physician is a narrow specialty nationwide, with 1,451 enrolled providers across 50 states and an average of 693 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 | 1043308570 |
|---|---|
| Specialty | Hematology (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 10/10/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
91.4157
Final Score
Avg: 83.1
76.877
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
License & disciplinary context - Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Arthur Rabinowitz, MD. To verify Arthur Rabinowitz, MD's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Arthur Rabinowitz, MD - brand share 24.0%
Hematology (Internal Medicine) Physician average
24% brand-name claims vs 76% generic, on 59 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.
59
Total Claims
$192K
Total Drug Cost
30
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 92
- Total Day Supply
- 2,337
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $162K
- Generic Drug Cost
- $29K
Patient Demographics
- Average Patient Age
- 76.7 years
- Avg HCC Risk Score
- 2.26
- Gender Split
- 60% female / 40% male
More Hematology (Internal Medicine) Physician in MA →
All providers in Massachusetts →
Compare specialties →
Hematology (Internal Medicine) Physician Overview
How Arthur Rabinowitz, MD fits within the Hematology (Internal Medicine) Physician landscape nationally.
1,451
Hematology (Internal Medicine) Physician Providers in US
50
States with Hematology (Internal Medicine) Physician
693
Avg Claims per Provider
Arthur Rabinowitz, MD's 59 claims are below the specialty average of 693.
Nearby Hematology (Internal Medicine) Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Rabinowitz.
Dr. Burt Alan Adelman
M.D.
Cambridge, MA
Dr. Joseph Antin
MD
Boston, MA
Dr. Hussein Assi
M.D
Boston, MA
Dr. Joseph Aziz
M.D
Boston, MA
Dr. Amira Barkal
MD
Boston, MA
Compare Hematology (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 Massachusetts medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hematology (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 Arthur Rabinowitz, MD's specialty? ▼
Arthur Rabinowitz, MD specializes in Hematology (Internal Medicine) Physician and practices in Burlington, Massachusetts. Credentials: MD.
How much does Arthur Rabinowitz, MD prescribe under Medicare Part D? ▼
In 2023, Arthur Rabinowitz, MD wrote 59 Medicare Part D claims totaling $192K in drug costs for 30 beneficiaries.
What is Arthur Rabinowitz, MD's Medicare quality score? ▼
Arthur Rabinowitz, MD has a CMS MIPS Final Score of 91.4/100 (Quality: 76.9). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Arthur Rabinowitz, MD located? ▼
Arthur Rabinowitz, MD is located at LAHEY CLINIC, Burlington, MA, 01805. Phone: (781) 744-8400.
What is Arthur Rabinowitz, MD's NPI number? ▼
Arthur Rabinowitz, MD's National Provider Identifier (NPI) is 1043308570, issued on 10/10/2006.
Does Arthur Rabinowitz, MD prescribe more brand-name or generic drugs? ▼
Arthur Rabinowitz, MD's prescribing is 24% brand-name and 76% generic drugs by claim count, with $162K in brand drug costs.
How many Hematology (Internal Medicine) Physician providers are there in the US? ▼
There are 1,451 Hematology (Internal Medicine) Physician providers across 50 states in the US. The average Hematology (Internal Medicine) Physician provider writes 693 Medicare Part D claims per year.
Does Arthur Rabinowitz, MD accept Medicare? ▼
Arthur Rabinowitz, MD appears in CMS Medicare data with 59 Part D claims and 30 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Arthur Rabinowitz, MD's credentials? ▼
Arthur Rabinowitz, MD's NPI is 1043308570 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.