NPI registry status
Active
2026 NPPES data Radiation Oncology Physician NPI 1588869366 MD
Verify on CMS → Patrick Gagnon, MD
Radiation Oncology Physician in Fairhaven, 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 6,141 in Radiation 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
203
Medicare Part D claims · 91 beneficiaries · Radiation Oncology Physician avg: 135
What the federal data shows
Patrick Gagnon, MD filed 203 Medicare Part D claims in 2024 as a Radiation Oncology Physician in Fairhaven, Massachusetts.
- 203
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥48th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Patrick Gagnon, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1588869366), first enumerated 06/20/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 203 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Massachusetts statewide board action statistics are published annually — these figures describe aggregate state activity, not Patrick Gagnon, MD's individual license status. Verify directly with the state medical board.
Source: BORIM annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1588869366 · Radiation Oncology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1588869366
- ENUM-MID 2007
- TAX-MID 6K Radiation Oncology
- RX-LIGHT 203
- BOOK-THIN 203 in Massachusetts
- PHOTO-ENUM Evan Wuthrick · 2007
Patrick Gagnon, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
203 ≥ 48th percentile 48% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. 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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Patrick Gagnon, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Patrick Gagnon, MD?
Quality data not reportedPrimary specialty
Radiation Oncology Physician
Medicare Part D claims
203 50% vs specialty avg
Specialty distribution in Massachusetts
How Radiation Oncology Physician compares to other specialties among Massachusetts providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Radiation Oncology Physician. Verify directly:
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).
Practice Address
Provider Details
| NPI | 1588869366 |
|---|---|
| Specialty | Radiation Oncology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/20/2007 |
Hospital and facility affiliations
Facilities where Patrick Gagnon, MD 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.
Southcoast Physicians Group Inc
Fall River, MA
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 Patrick Gagnon, MD. To verify Patrick Gagnon, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
203
Total Claims
$4K
Total Drug Cost
91
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 303
- Total Day Supply
- 7,241
- Generic Drug Cost
- $4K
- Opioid Claims
- 33 (16.3% rate)
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 1.83
- Gender Split
- 42% female / 58% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Patrick Gagnon, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Tamsulosin Hcl
Tamsulosin Hcl
56 claims
- Lidocaine Hcl Visc…
Lidocaine Hcl Viscous
45 claims
- Fentanyl 18
Fentanyl
18 claims
- Memantine Hcl 11
Memantine Hcl
11 claims
- Oxycodone Hcl 11
Oxycodone Hcl
11 claims
| Drug | Claims |
|---|---|
| Tamsulosin Hcl | 56 |
| Lidocaine Hcl Viscous Lidocaine Hcl | 45 |
| Fentanyl | 18 |
| Memantine Hcl | 11 |
| Oxycodone Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Radiation Oncology Physician Overview
How Patrick Gagnon, MD fits within the Radiation Oncology Physician landscape nationally.
6,141
Radiation Oncology Physician Providers in US
53
States with Radiation Oncology Physician
135
Avg Claims per Provider
Patrick Gagnon, MD's 203 claims are above the specialty average of 135.
Nationwide Radiation Oncology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Gagnon, both outside Massachusetts so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Radiation Oncology Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Gagnon.
One of 203 Radiation Oncology Physician providers enrolled in Massachusetts, 5 are shown here.
Dr. Anthony Abner
MD
Cambridge, MA
Dr. Matthew Abrams
M.D.
Boston, MA
Dr. Todd Adams
M.D.
Medford, MA
Dr. Jenna Adleman
MD
Boston, MA
Dr. Nima Aghdam
M.D.
Boston, MA
Compare Radiation Oncology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Patrick Gagnon, MD's specialty? ▼
Patrick Gagnon, MD specializes in Radiation Oncology Physician and practices in Fairhaven, Massachusetts. Credentials: MD.
How much does Patrick Gagnon, MD prescribe under Medicare Part D? ▼
In 2024, Patrick Gagnon, MD wrote 203 Medicare Part D claims totaling $4K in drug costs for 91 beneficiaries.
Where is Patrick Gagnon, MD located? ▼
Patrick Gagnon, MD is located at 206 MILL RD, Fairhaven, MA, 02719. Phone: (508) 973-3000.
What is Patrick Gagnon, MD's NPI number? ▼
Patrick Gagnon, MD's National Provider Identifier (NPI) is 1588869366, issued on 06/20/2007.
Does Patrick Gagnon, MD prescribe opioids? ▼
Yes, Patrick Gagnon, MD had 33 opioid claims in 2024 with an opioid prescribing rate of 16.3%.
How many Radiation Oncology Physician providers are there in the US? ▼
There are 6,141 Radiation Oncology Physician providers across 53 states in the US. The average Radiation Oncology Physician provider writes 135 Medicare Part D claims per year.
What drugs does Patrick Gagnon, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Patrick Gagnon, MD's most frequently prescribed drugs include Tamsulosin Hcl, Lidocaine Hcl Viscous, Fentanyl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Patrick Gagnon, MD accept Medicare? ▼
Patrick Gagnon, MD appears in CMS Medicare data with 203 Part D claims and 91 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Patrick Gagnon, MD's credentials? ▼
Patrick Gagnon, MD's NPI is 1588869366 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 (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- 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 August 2026 (NPPES) / 2024 (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
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 August 2026.