NPI registry status
Active
2026 NPPES data Pain Medicine (Physical Medicine & Rehabilitation) Physician NPI 1558441949 DO
Verify on CMS → Barry Gendron, DO
Pain Medicine (Physical Medicine & Rehabilitation) Physician in Portsmouth, New Hampshire.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,630 in Pain Medicine (Physical Medicine & Rehabilitation) 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
19
Medicare Part D claims · Pain Medicine (Physical Medicine & Rehabilitation) Physician avg: 1K
MIPS score
57/100
▼ 26 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
Barry Gendron, DO reported a CMS MIPS final score of 57/100 - below the 83.1 national average - and filed 19 Medicare Part D claims in 2023.
- 57/100
- MIPS score · -26 vs avg
- 19
- 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.
Barry Gendron, DO's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
57 5th percentile higher than 5% 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 Barry Gendron, DO sits
This provider among pain medicine (physical medicine & rehabilitation) physician peers
Across the 526 pain medicine (physical medicine & rehabilitation) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Barry Gendron, DO writes more Part D claims than 1% of them and scores higher on MIPS quality than 19% - 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 pain medicine (physical medicine & rehabilitation) physician peer from a representative sample of 60; the gold marker is Barry Gendron, DO. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Barry Gendron, DO 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 Barry Gendron, DO?
Below national averagePrimary specialty
Pain Medicine (Physical Medicine & Rehabilitation) Physician
Medicare Part D claims
19 99% vs specialty avg
MIPS final score
57/100 26.1 pts vs avg
Specialty distribution in New Hampshire
How Pain Medicine (Physical Medicine & Rehabilitation) Physician compares to other specialties among New Hampshire providers
Medicare quality performance, MIPS
Barry Gendron, DO's 2023 MIPS final score plotted against the Pain Medicine (Physical Medicine & Rehabilitation) Physician national average
- MIPS Final Score
- 57/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Pain Medicine (Physical Medicine & Rehabilitation) Physician) - 57/100 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).
Barry Gendron, DO appears in the CMS NPPES registry as a Pain Medicine (Physical Medicine & Rehabilitation) Physician provider holding DO credentials at 875 GREENLAND RD, Portsmouth, NH, 03801, with a listed phone of (603) 431-5529. NPI 1558441949 was issued on 10/17/2006.
Medicare Part D records for calendar year 2023 show 19 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $978 in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 57/100 for the 2023 performance year (Quality 51.9, Cost 44.8), compared with the national average of 83.1.
Pain Medicine (Physical Medicine & Rehabilitation) Physician is a narrow specialty nationwide, with 1,630 enrolled providers across 50 states and an average of 1,401 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 | 1558441949 |
|---|---|
| Specialty | Pain Medicine (Physical Medicine & Rehabilitation) Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 10/17/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
56.9989
Final Score
Avg: 83.1
51.9209
Quality
44.808
Cost
Reporting: Group practice
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
19
Total Claims
$978
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 37
- Total Day Supply
- 957
- Brand Drug Cost
- $0
- Generic Drug Cost
- $978
Patient Demographics
- Average Patient Age
- 72.2 years
- Avg HCC Risk Score
- 0.89
More Pain Medicine (Physical Medicine & Rehabilitation) Physician in NH →
All providers in New Hampshire →
Compare specialties →
Pain Medicine (Physical Medicine & Rehabilitation) Physician Overview
How Barry Gendron, DO fits within the Pain Medicine (Physical Medicine & Rehabilitation) Physician landscape nationally.
1,630
Pain Medicine (Physical Medicine & Rehabilitation) Physician Providers in US
50
States with Pain Medicine (Physical Medicine & Rehabilitation) Physician
1,401
Avg Claims per Provider
Barry Gendron, DO's 19 claims are below the specialty average of 1,401.
Nearby Pain Medicine (Physical Medicine & Rehabilitation) Physician Providers in New Hampshire
Other clinicians with the same primary specialty enrolled in New Hampshire, drawn from the same CMS NPPES roster as Gendron.
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 New Hampshire medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pain Medicine (Physical Medicine & Rehabilitation) 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.
Healthcare Guides
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Explore New Hampshire
Frequently Asked Questions
What is Barry Gendron, DO's specialty? ▼
Barry Gendron, DO specializes in Pain Medicine (Physical Medicine & Rehabilitation) Physician and practices in Portsmouth, New Hampshire. Credentials: DO.
How much does Barry Gendron, DO prescribe under Medicare Part D? ▼
In 2023, Barry Gendron, DO wrote 19 Medicare Part D claims totaling $978 in drug costs for N/A beneficiaries.
What is Barry Gendron, DO's Medicare quality score? ▼
Barry Gendron, DO has a CMS MIPS Final Score of 57/100 (Quality: 51.9, Cost: 44.8). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Barry Gendron, DO located? ▼
Barry Gendron, DO is located at 875 GREENLAND RD, Portsmouth, NH, 03801. Phone: (603) 431-5529.
What is Barry Gendron, DO's NPI number? ▼
Barry Gendron, DO's National Provider Identifier (NPI) is 1558441949, issued on 10/17/2006.
How many Pain Medicine (Physical Medicine & Rehabilitation) Physician providers are there in the US? ▼
There are 1,630 Pain Medicine (Physical Medicine & Rehabilitation) Physician providers across 50 states in the US. The average Pain Medicine (Physical Medicine & Rehabilitation) Physician provider writes 1,401 Medicare Part D claims per year.
Does Barry Gendron, DO accept Medicare? ▼
Barry Gendron, DO appears in CMS Medicare data with 19 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 Barry Gendron, DO's credentials? ▼
Barry Gendron, DO's NPI is 1558441949 with credentials DO. 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.