NPI registry status
Active
2026 NPPES data Medical Oncology Physician NPI 1568755296 MD, PHD
Verify on CMS → Jennifer Rosenbluth, MD, PHD
Medical Oncology Physician in Boston, 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 3,815 in Medical Oncology 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
42
Medicare Part D claims · Medical Oncology Physician avg: 689
MIPS score
74.5/100
▼ 9 pts below national avg 83.1 · Mid-tier
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Jennifer Rosenbluth, MD, PHD reported a CMS MIPS final score of 74.5/100 - below the 83.1 national average - and filed 42 Medicare Part D claims in 2023.
- 74.5/100
- MIPS score · -9 vs avg
- 42
- Part D claims, 2023
- 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.
Jennifer Rosenbluth, MD, PHD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
75 12th percentile higher than 12% 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 Jennifer Rosenbluth, MD, PHD sits
This provider among medical oncology physician peers
Across the 1,527 medical oncology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Jennifer Rosenbluth, MD, PHD writes more Part D claims than 6% of them and scores higher on MIPS quality than 9% - 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 medical oncology physician peer from a representative sample of 60; the gold marker is Jennifer Rosenbluth, MD, PHD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Jennifer Rosenbluth, MD, PHD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 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 Jennifer Rosenbluth, MD, PHD?
Below national averagePrimary specialty
Medical Oncology Physician
Medicare Part D claims
42 94% vs specialty avg
MIPS final score
74.5/100 8.6 pts vs avg
Specialty distribution in Massachusetts
How Medical Oncology Physician compares to other specialties among Massachusetts providers
Medicare quality performance, MIPS
Jennifer Rosenbluth, MD, PHD's 2023 MIPS final score plotted against the Medical Oncology Physician national average
- MIPS Final Score
- 74.5/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Medical Oncology Physician) - 74.5/100 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).
Jennifer Rosenbluth, MD, PHD appears in the CMS NPPES registry as a Medical Oncology Physician provider holding MD, PHD credentials at MASSACHUSETTS GENERAL HOSPITAL, Boston, MA, 02114, with a listed phone of (617) 726-2865. NPI 1568755296 was issued on 05/27/2011.
Medicare Part D records for calendar year 2023 show 42 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $2K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 74.5/100 for the 2023 performance year, compared with the national average of 83.1.
Medical Oncology Physician is a narrow specialty nationwide, with 3,815 enrolled providers across 53 states and an average of 689 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 | 1568755296 |
|---|---|
| Specialty | Medical Oncology Physician |
| Credentials | MD, PHD |
| Gender | Female |
| NPI Issued | 05/27/2011 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
74.4657
Final Score
Avg: 83.1
46.6814
Cost
76
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Jennifer Rosenbluth, MD, PHD 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.
Ucsf Medical Group Business Services
Berkeley, CA
University OF California San Francisco
San Francisco, CA
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 - 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 Jennifer Rosenbluth, MD, PHD. To verify Jennifer Rosenbluth, MD, PHD'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
42
Total Claims
$2K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 92
- Total Day Supply
- 2,590
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 72.6 years
- Avg HCC Risk Score
- 1.16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Tamoxifen Citrate | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Medical Oncology Physician Overview
How Jennifer Rosenbluth, MD, PHD fits within the Medical Oncology Physician landscape nationally.
3,815
Medical Oncology Physician Providers in US
53
States with Medical Oncology Physician
689
Avg Claims per Provider
Jennifer Rosenbluth, MD, PHD's 42 claims are below the specialty average of 689.
Nearby Medical Oncology Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Rosenbluth.
Dr. Janet Abrahm
MD
Boston, MA
Dr. Thomas Abrams
M.D.
Boston, MA
Dr. Jeremy Abramson
MD
Boston, MA
Dr. Adeboye Adewoye
M.D.
Boston, MA
Dr. Andrew Aguirre
MD, PHD
Boston, MA
Compare Medical Oncology 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 Medical Oncology 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 Jennifer Rosenbluth, MD, PHD's specialty? ▼
Jennifer Rosenbluth, MD, PHD specializes in Medical Oncology Physician and practices in Boston, Massachusetts. Credentials: MD, PHD.
How much does Jennifer Rosenbluth, MD, PHD prescribe under Medicare Part D? ▼
In 2023, Jennifer Rosenbluth, MD, PHD wrote 42 Medicare Part D claims totaling $2K in drug costs for N/A beneficiaries.
What is Jennifer Rosenbluth, MD, PHD's Medicare quality score? ▼
Jennifer Rosenbluth, MD, PHD has a CMS MIPS Final Score of 74.5/100, Cost: 46.7. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Jennifer Rosenbluth, MD, PHD located? ▼
Jennifer Rosenbluth, MD, PHD is located at MASSACHUSETTS GENERAL HOSPITAL, Boston, MA, 02114. Phone: (617) 726-2865.
What is Jennifer Rosenbluth, MD, PHD's NPI number? ▼
Jennifer Rosenbluth, MD, PHD's National Provider Identifier (NPI) is 1568755296, issued on 05/27/2011.
How many Medical Oncology Physician providers are there in the US? ▼
There are 3,815 Medical Oncology Physician providers across 53 states in the US. The average Medical Oncology Physician provider writes 689 Medicare Part D claims per year.
What drugs does Jennifer Rosenbluth, MD, PHD prescribe most often? ▼
Based on 2023 Medicare Part D data, Jennifer Rosenbluth, MD, PHD's most frequently prescribed drugs include Tamoxifen Citrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jennifer Rosenbluth, MD, PHD accept Medicare? ▼
Jennifer Rosenbluth, MD, PHD appears in CMS Medicare data with 42 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jennifer Rosenbluth, MD, PHD's credentials? ▼
Jennifer Rosenbluth, MD, PHD's NPI is 1568755296 with credentials MD, PHD. 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.