NPI registry status
Active
2026 NPPES data Medical Oncology Physician NPI 1659337038 M.D.
Verify on CMS → Christopher Sweeney, M.D.
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
166
Medicare Part D claims · 51 beneficiaries · Medical Oncology Physician avg: 689
Generic prescribing
36%
generic claims · 64% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
86.3/100
▲ 3 pts above national avg 83.1 · Above neutral
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
Christopher Sweeney, M.D. reported a CMS MIPS final score of 86.3/100 - above the 83.1 national average - and filed 166 Medicare Part D claims in 2023.
- 86.3/100
- MIPS score · +3 vs avg
- 166
- Part D claims, 2023
- 36%
- 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.
Christopher Sweeney, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
86 Top 48% higher than 52% 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 Christopher Sweeney, M.D. 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, Christopher Sweeney, M.D. writes more Part D claims than 22% of them and scores higher on MIPS quality than 50% - 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 medical oncology physician peer from a representative sample of 60; the gold marker is Christopher Sweeney, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Christopher Sweeney, M.D. 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 Christopher Sweeney, M.D.?
High performer (top quartile)Primary specialty
Medical Oncology Physician
Medicare Part D claims
166 76% vs specialty avg
MIPS final score
86.3/100 3.2 pts vs avg
Specialty distribution in Massachusetts
How Medical Oncology Physician compares to other specialties among Massachusetts providers
Medicare quality performance, MIPS
Christopher Sweeney, M.D.'s 2023 MIPS final score plotted against the Medical Oncology Physician national average
- MIPS Final Score
- 86.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Medical Oncology Physician) - 86.3/100 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).
Christopher Sweeney, M.D. appears in the CMS NPPES registry as a Medical Oncology Physician provider holding M.D. credentials at 44 BINNEY ST, Boston, MA, 02115, with a listed phone of (617) 632-4524. NPI 1659337038 was issued on 04/25/2006.
Medicare Part D records for calendar year 2023 show 166 prescription claims written by this provider, covering 51 Medicare beneficiaries and totaling roughly $1.3 million in drug spend, split 64% brand-name and 36% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 86.3/100 for the 2023 performance year (Quality 69.4), 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 | 1659337038 |
|---|---|
| Specialty | Medical Oncology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 04/25/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
86.2826
Final Score
Avg: 83.1
69.3633
Quality
100
Promoting Interoperability
Reporting: Group practice
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 Christopher Sweeney, M.D.. To verify Christopher Sweeney, M.D.'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 · Brand-heavy
Christopher Sweeney, M.D. - brand share 64.0%
Medical Oncology Physician average
64% brand-name claims vs 36% generic, on 166 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.
166
Total Claims
$1.3M
Total Drug Cost
51
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 195
- Total Day Supply
- 5,681
- Brand vs Generic
- 64% brand / 36% generic
- Brand Drug Cost
- $1.2M
- Generic Drug Cost
- $32K
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 2.18
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Christopher Sweeney, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Abiraterone Acetate
Abiraterone Acetate
33 claims
- Nubeqa
Nubeqa
26 claims
- Xtandi
Xtandi
26 claims
- Orgovyx
Orgovyx
21 claims
- Erleada
Erleada
19 claims
- Prednisone
Prednisone
17 claims
- Cabometyx 11
Cabometyx
11 claims
| Drug | Claims |
|---|---|
| Abiraterone Acetate | 33 |
| Nubeqa Darolutamide | 26 |
| Xtandi Enzalutamide | 26 |
| Orgovyx Relugolix | 21 |
| Erleada Apalutamide | 19 |
| Prednisone | 17 |
| Cabometyx Cabozantinib S-Malate | 11 |
* 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 Christopher Sweeney, M.D. 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
Christopher Sweeney, M.D.'s 166 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 Sweeney.
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 Christopher Sweeney, M.D.'s specialty? ▼
Christopher Sweeney, M.D. specializes in Medical Oncology Physician and practices in Boston, Massachusetts. Credentials: M.D..
How much does Christopher Sweeney, M.D. prescribe under Medicare Part D? ▼
In 2023, Christopher Sweeney, M.D. wrote 166 Medicare Part D claims totaling $1.3M in drug costs for 51 beneficiaries.
What is Christopher Sweeney, M.D.'s Medicare quality score? ▼
Christopher Sweeney, M.D. has a CMS MIPS Final Score of 86.3/100 (Quality: 69.4). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Christopher Sweeney, M.D. located? ▼
Christopher Sweeney, M.D. is located at 44 BINNEY ST, Boston, MA, 02115. Phone: (617) 632-4524.
What is Christopher Sweeney, M.D.'s NPI number? ▼
Christopher Sweeney, M.D.'s National Provider Identifier (NPI) is 1659337038, issued on 04/25/2006.
Does Christopher Sweeney, M.D. prescribe more brand-name or generic drugs? ▼
Christopher Sweeney, M.D.'s prescribing is 64% brand-name and 36% generic drugs by claim count, with $1.2M in brand drug costs.
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 Christopher Sweeney, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Christopher Sweeney, M.D.'s most frequently prescribed drugs include Abiraterone Acetate, Nubeqa, Xtandi. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Christopher Sweeney, M.D. accept Medicare? ▼
Christopher Sweeney, M.D. appears in CMS Medicare data with 166 Part D claims and 51 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christopher Sweeney, M.D.'s credentials? ▼
Christopher Sweeney, M.D.'s NPI is 1659337038 with credentials M.D.. 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.