Dr. Patrick R. Duffy III, MD
- Medicare services, 2024
- 3,299
- Medicare patients, 2024
- 1,482
- Hospital affiliations
- 5
- Industry payments
- $438
- Medical groups
- 7
- Practice address
- 130 Division St, Derby, CT 06418
- Practice phone
- Call (203) 732-7500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Duffy's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Patrick R. Duffy III is a diagnostic radiologist in Derby, Connecticut
Dr. Duffy practices at Griffin Hospital in Derby, Connecticut, part of Griffin Hospital.
Dr. Duffy's NPI, 1922258532, was assigned on September 19, 2008. Dr. Duffy graduated from George Washington University School of Medicine in 2008. Dr. Duffy holds Connecticut license 52599.
- NPI
- 1922258532NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234352246
- NPI enumeration date
- September 19, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 732-7500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Patrick R. Duffy III practices at 2 locations in Derby, Connecticut
Dr. Duffy's primary practice is Griffin Hospital, at 130 Division St, Derby, CT 06418 in New Haven County. The practice phone is (203) 732-7500. Dr. Duffy also practices at Griffin Hospital, 144 Division St, Derby, CT 06418.
- Griffin HospitalPrimary130 Division St, Derby, CT 06418 · New Haven CountyPhone(203) 732-7500
- Griffin Hospital144 Division St, Derby, CT 06418 · Naugatuck Vly CountyPhone(203) 732-7360
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Patrick R. Duffy III is affiliated with 12 sites of care and 7 medical groups
Dr. Duffy's primary practice is Griffin Hospital in Derby, Connecticut, part of Griffin Hospital. Dr. Duffy is also affiliated with Yale New Haven Hospital. The medical group on file is Jefferson Radiology. Dmand AI also links Dr. Duffy to 3 more hospitals, 7 group practices and clinics and 6 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Patrick R. Duffy III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Duffy practices, 12 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Griffin Hospital | Available with a free account |
| +11 more sites and 6 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Griffin Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Patrick R. Duffy III is one of 472 diagnostic radiologists in Connecticut
Diagnostic radiology is Dr. Duffy's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dmand AI has Dr. Duffy's licenses on file in 2 states: Connecticut and Massachusetts.
Specialties and state licenses
- Diagnostic radiology, ConnecticutPrimary
- Massachusetts license
Diagnostic radiologists near Dr. Duffy
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Patrick R. Duffy III billed Medicare for 3,299 services in 2024
CMS data shows 3,299 Medicare services from Dr. Duffy across 34 procedure codes in 2024, for 1,482 Medicare patients. Medicare paid $46,630 for them.
Dr. Duffy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,9782024: 1,8128%
- Other services
- 2023: 2,3502024: 1,40240%
- Tests and treatments
- 2023: 692024: 724%
- Surgery
- 2023: 152024: 1313%
Where Dr. Duffy's Medicare services took place, 2024
- In an office1,42143%
- In a facility1,87857%
Dr. Duffy compared with the Connecticut median for diagnostic radiologists, 2024
- Dr. Duffy
- Connecticut median
- Medicare services
- 3,299vs 2,06360% above
- Medicare patients
- 1,482vs 1,26217% above
Medians across 462 diagnostic radiologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Duffy's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Duffy and other diagnostic radiologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Patrick R. Duffy III treated 1,482 Medicare patients in 2024, average age 75
CMS counts 1,482 Medicare patients who saw Dr. Duffy in 2024. The largest group is 75 to 84, with 519 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 31% are also on Medicaid. Their average risk score is 1.87, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Duffy's median patient age at 70, with 57% women.
Dr. Duffy's Medicare patients by age, 2024
Dr. Duffy's Medicare patients by sex, 2024
- Women80554%
- Men67746%
Chronic conditions among Dr. Duffy's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Ischemic heart disease40%
- Anxiety37%
- COPD36%
- Diabetes35%
- Mood disorders35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Duffy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women57%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Patrick R. Duffy III takes part in Medicare
Dr. Duffy accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Patrick R. Duffy III received $438 in industry payments from 2016 to 2019
CMS Open Payments shows 7 general payments to Dr. Duffy from 5 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Merit Medical Systems Inc paid the most, $122.
General payments to Dr. Duffy by program year, 2016 to 2019
Companies that paid Dr. Duffy the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Patrick R. Duffy III graduated from George Washington University School of Medicine
Dr. Duffy graduated from George Washington University School of Medicine in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Patrick R. Duffy III's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Patrick R. Duffy III
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Patrick R. Duffy III's NPI number?
Dr. Patrick R. Duffy III's NPI number is 1922258532. It was assigned on September 19, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Patrick R. Duffy III?
Dr. Patrick R. Duffy III is a diagnostic radiologist in Derby, Connecticut. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Patrick R. Duffy III practice?
Dr. Duffy practices at 130 Division St, Derby, CT 06418. Dr. Duffy also practices at 144 Division St, Derby, CT 06418. Dr. Duffy's primary practice is Griffin Hospital in Derby, Connecticut, part of Griffin Hospital. Dmand AI also links Dr. Duffy to 3 hospitals, 7 group practices and clinics and 6 medical groups.
What is Dr. Patrick R. Duffy III's office phone number?
The practice phone on file for Dr. Duffy is (203) 732-7500.
What is Dr. Patrick R. Duffy III's medical license number?
Dr. Duffy holds Connecticut license 52599, one of the licenses on file in 2 states.
Which states has Dr. Patrick R. Duffy III been licensed in?
Dmand AI has state licenses on file for Dr. Duffy in Connecticut and Massachusetts.
Which hospitals is Dr. Patrick R. Duffy III affiliated with?
Dr. Duffy practices at Griffin Hospital in Derby, Connecticut. Dr. Duffy is also affiliated with Yale New Haven Hospital. Dmand AI links Dr. Duffy to 3 more hospitals.
What medical group is Dr. Patrick R. Duffy III part of?
Dr. Duffy is linked to Jefferson Radiology. Dmand AI links Dr. Duffy to 6 more medical groups.
Does Dr. Patrick R. Duffy III accept Medicare?
Yes. CMS data shows Dr. Duffy billed Medicare for 3,299 services in 2024, and Dr. Duffy accepts Medicare assignment.
How many Medicare patients does Dr. Patrick R. Duffy III see?
CMS counts 1,482 Medicare patients who saw Dr. Duffy in 2024, with an average age of 75.
Show 4 more questionsShow fewer questions
What services does Dr. Patrick R. Duffy III bill to Medicare?
In 2024, Dr. Duffy's most billed Medicare services were medicare temporary code (Q9967), diagnostic imaging (71045) and diagnostic imaging (71046).
Where did Dr. Patrick R. Duffy III go to medical school?
Dr. Duffy graduated from George Washington University School of Medicine in 2008.
Has Dr. Patrick R. Duffy III received payments from drug or device companies?
CMS Open Payments shows $438 in general payments to Dr. Duffy from 5 companies from 2016 to 2019. The largest total came from Merit Medical Systems Inc.
How long has Dr. Patrick R. Duffy III been practicing?
Dr. Duffy graduated from medical school in 2008, 18 years ago.
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