NPI registry status
Active
2026 NPPES data Orthopaedic Surgery Physician NPI 1912905621 M.D.
Verify on CMS → Patrick Duffy, M.D.
Orthopaedic Surgery Physician in Prospect, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 25,775 in Orthopaedic Surgery 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
25
Medicare Part D claims · Orthopaedic Surgery Physician avg: 324
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Patrick Duffy, M.D. filed 25 Medicare Part D claims in 2023 as a Orthopaedic Surgery Physician in Prospect, Connecticut.
- 25
- Part D claims, 2023
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.
Patrick Duffy, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
25 0th percentile higher than 0% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Patrick Duffy, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Patrick Duffy, M.D.?
Quality data not reportedPrimary specialty
Orthopaedic Surgery Physician
Medicare Part D claims
25 92% vs specialty avg
Specialty distribution in Connecticut
How Orthopaedic Surgery Physician compares to other specialties among Connecticut 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 Orthopaedic Surgery 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).
Patrick Duffy, M.D. appears in the CMS NPPES registry as a Orthopaedic Surgery Physician provider holding M.D. credentials at 166 WATERBURY RD, Prospect, CT, 06712, with a listed phone of (203) 758-3163. NPI 1912905621 was issued on 07/07/2005.
Medicare Part D records for calendar year 2023 show 25 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $605 in drug spend.
Orthopaedic Surgery Physician is a mid-sized specialty nationwide, with 25,775 enrolled providers across 56 states and an average of 324 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 | 1912905621 |
|---|---|
| Specialty | Orthopaedic Surgery Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/07/2005 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
25
Total Claims
$605
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 39
- Total Day Supply
- 1,002
- Generic Drug Cost
- $495
Patient Demographics
- Average Patient Age
- 72.1 years
- Avg HCC Risk Score
- 0.51
Orthopaedic Surgery Physician Overview
How Patrick Duffy, M.D. fits within the Orthopaedic Surgery Physician landscape nationally.
25,775
Orthopaedic Surgery Physician Providers in US
56
States with Orthopaedic Surgery Physician
324
Avg Claims per Provider
Patrick Duffy, M.D.'s 25 claims are below the specialty average of 324.
Nearby Orthopaedic Surgery Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Duffy.
Dr. Christina Allen
MD
New Haven, CT
Dr. Kenneth Alleyne
MD
South Windsor, CT
Dr. Ammar Anbari
MD
North Franklin, CT
Dr. Nicole Arcand
MD
North Franklin, CT
Dr. Robert Arciero
MD
Farmington, CT
Compare Orthopaedic Surgery 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 Connecticut medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Orthopaedic Surgery 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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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
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How insurance networks affect your costs
Telehealth Guide
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Frequently Asked Questions
What is Patrick Duffy, M.D.'s specialty? ▼
Patrick Duffy, M.D. specializes in Orthopaedic Surgery Physician and practices in Prospect, Connecticut. Credentials: M.D..
How much does Patrick Duffy, M.D. prescribe under Medicare Part D? ▼
In 2023, Patrick Duffy, M.D. wrote 25 Medicare Part D claims totaling $605 in drug costs for N/A beneficiaries.
Where is Patrick Duffy, M.D. located? ▼
Patrick Duffy, M.D. is located at 166 WATERBURY RD, Prospect, CT, 06712. Phone: (203) 758-3163.
What is Patrick Duffy, M.D.'s NPI number? ▼
Patrick Duffy, M.D.'s National Provider Identifier (NPI) is 1912905621, issued on 07/07/2005.
How many Orthopaedic Surgery Physician providers are there in the US? ▼
There are 25,775 Orthopaedic Surgery Physician providers across 56 states in the US. The average Orthopaedic Surgery Physician provider writes 324 Medicare Part D claims per year.
Does Patrick Duffy, M.D. accept Medicare? ▼
Patrick Duffy, M.D. appears in CMS Medicare data with 25 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 Patrick Duffy, M.D.'s credentials? ▼
Patrick Duffy, M.D.'s NPI is 1912905621 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
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.