NPI registry status
Active
2026 NPPES data Cardiovascular Disease Physician NPI 1598994261 M.D.
Verify on CMS → John Duell, M.D.
Cardiovascular Disease Physician in Dartmouth, 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 24,810 in Cardiovascular Disease 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
4K
Medicare Part D claims · 595 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$554
23 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
John Duell, M.D. filed 3,952 Medicare Part D claims in 2023 as a Cardiovascular Disease Physician in Dartmouth, Massachusetts, prescribing 75% generic.
- 4K
- Part D claims, 2023
- 75%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥91st
- 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 John Duell, M.D.
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 1598994261), first enumerated 07/02/2009.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 3,952 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
- Reported
Industry payment transparency
$554 in reported industry payments (23 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Massachusetts statewide board action statistics are published annually — these figures describe aggregate state activity, not John Duell, M.D.'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 1598994261 · Cardiovascular Disease Physician
NPI-10 · ENUM-MID · TAX-MID · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1598994261
- ENUM-MID 2009
- TAX-MID 25K Cardiovascular Disease
- RX-MID 3,952
- BOOK-LIGHT 903 in Massachusetts
- PHOTO-ENUM Riteshkumar Patel · 2009
John Duell, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,952 ≥ 91st percentile 91% of 1,370,886 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 · 2023
✓
Board certification likely (heuristic, not verified)
John Duell, M.D. 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 John Duell, M.D.?
Quality data not reportedPrimary specialty
Cardiovascular Disease Physician
Medicare Part D claims
3,952 30% vs specialty avg
Specialty distribution in Massachusetts
How Cardiovascular Disease 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 Cardiovascular Disease 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 | 1598994261 |
|---|---|
| Specialty | Cardiovascular Disease Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/02/2009 |
Hospital and facility affiliations
Facilities where John Duell, M.D. 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.
Lifespan Physician Group OF Massachusetts Inc
Dartmouth, 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).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for John Duell, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$554
Largest payer
E.R. Squibb & Sons, L.L.C.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 John Duell, M.D.. To verify John Duell, 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 · Above average
John Duell, M.D. - brand share 25.0%
Cardiovascular Disease Physician average
25% brand-name claims vs 75% generic, on 3,952 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.
3,952
Total Claims
$1.0M
Total Drug Cost
595
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 8,779
- Total Day Supply
- 261,736
- Brand vs Generic
- 25% brand / 75% generic
- Brand Drug Cost
- $941K
- Generic Drug Cost
- $84K
Patient Demographics
- Average Patient Age
- 76.6 years
- Avg HCC Risk Score
- 1.62
- Gender Split
- 50% female / 50% male
- Age Distribution
- <65: 39, 65-74: 188, 75-84: 266, 85+: 102
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Duell, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Eliquis
Eliquis
647 claims
- Metoprolol Succinate
Metoprolol Succinate
564 claims
- Furosemide
Furosemide
315 claims
- Amiodarone Hcl 221
Amiodarone Hcl
221 claims
- Amlodipine Besylate 213
Amlodipine Besylate
213 claims
- Xarelto 195
Xarelto
195 claims
- Atorvastatin Calcium 182
Atorvastatin Calcium
182 claims
- Diltiazem 24hr Er … 137
Diltiazem 24hr Er (Cd)
137 claims
| Drug | Claims |
|---|---|
| Eliquis Apixaban | 647 |
| Metoprolol Succinate | 564 |
| Furosemide | 315 |
| Amiodarone Hcl | 221 |
| Amlodipine Besylate | 213 |
| Xarelto Rivaroxaban | 195 |
| Atorvastatin Calcium | 182 |
| Diltiazem 24hr Er (Cd) Diltiazem Hcl | 137 |
| Metoprolol Tartrate | 129 |
| Lisinopril | 126 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Cardiovascular Disease Physician in MA →
All providers in Massachusetts →
Compare specialties →
Cardiovascular Disease Physician Overview
How John Duell, M.D. fits within the Cardiovascular Disease Physician landscape nationally.
24,810
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider
John Duell, M.D.'s 3,952 claims are above the specialty average of 3,033.
Nationwide Cardiovascular Disease Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Duell, both outside Massachusetts so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2009)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Cardiovascular Disease Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Duell.
One of 903 Cardiovascular Disease Physician providers enrolled in Massachusetts, 5 are shown here.
Dr. Omar Abdel-Razek
MD
Boston, MA
Abdelrhman Abumoawad
Boston, MA
Dr. Kenneth Adams
M.D.
Haverhill, MA
Dr. Dale Adler
M.D.
Boston, MA
Dr. Nadeem Afridi
MD
Newburyport, MA
Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Duell, M.D.'s specialty? ▼
John Duell, M.D. specializes in Cardiovascular Disease Physician and practices in Dartmouth, Massachusetts. Credentials: M.D..
How much does John Duell, M.D. prescribe under Medicare Part D? ▼
In 2023, John Duell, M.D. wrote 3,952 Medicare Part D claims totaling $1.0M in drug costs for 595 beneficiaries.
Where is John Duell, M.D. located? ▼
John Duell, M.D. is located at 535 FAUNCE CORNER RD, Dartmouth, MA, 02747. Phone: (508) 996-3991.
What is John Duell, M.D.'s NPI number? ▼
John Duell, M.D.'s National Provider Identifier (NPI) is 1598994261, issued on 07/02/2009.
Does John Duell, M.D. prescribe more brand-name or generic drugs? ▼
John Duell, M.D.'s prescribing is 25% brand-name and 75% generic drugs by claim count, with $941K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US? ▼
There are 24,810 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does John Duell, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, John Duell, M.D.'s most frequently prescribed drugs include Eliquis, Metoprolol Succinate, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Duell, M.D. accept Medicare? ▼
John Duell, M.D. appears in CMS Medicare data with 3,952 Part D claims and 595 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Duell, M.D.'s credentials? ▼
John Duell, M.D.'s NPI is 1598994261 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.
- 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
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.