Dr. Jillian Britt Duffy, MD
- Medicare services, 2024
- 150
- Medicare patients, 2024
- 121
- Part D claims, 2024
- 31
- MIPS score, 2024
- 93
- Hospital affiliations
- 2
- Practice address
- 2701 W 68th Street, Chicago, IL 60629
- Practice phone
- Call (773) 884-9000
- 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
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Dr. Jillian Britt Duffy is an emergency medicine physician in Chicago, Illinois
Dr. Duffy practices at Holy Cross Hospital in Chicago, Illinois, part of Sinai Health System.
Dr. Duffy's NPI, 1942705884, was assigned on March 23, 2018. Dr. Duffy graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2018. Dr. Duffy holds Illinois license 036163109.
- NPI
- 1942705884NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092064576
- NPI enumeration date
- March 23, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (773) 884-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jillian Britt Duffy practices at Holy Cross Hospital in Chicago, Illinois
Dr. Duffy's primary practice is Holy Cross Hospital, at 2701 W 68th Street, Chicago, IL 60629 in Cook County. The practice phone is (773) 884-9000.
- Holy Cross Hospital2701 W 68th Street, Chicago, IL 60629 · Cook CountyPhone(773) 884-9000
Source: Dmand AI Affiliation Data
Dr. Jillian Britt Duffy is affiliated with 2 sites of care and 1 medical group
Dr. Duffy's primary practice is Holy Cross Hospital in Chicago, Illinois, part of Sinai Health System. Dr. Duffy is also affiliated with Mount Sinai Hospital. The medical group on file is CEP America.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jillian Britt Duffy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Duffy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Holy Cross Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jillian Britt Duffy is one of 2,385 emergency medicine physicians in Illinois
Emergency medicine is Dr. Duffy's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Duffy's licenses on file in 2 states: Illinois and Massachusetts.
Specialties and state licenses
- Emergency medicine, IllinoisPrimary
- Massachusetts license
Emergency medicine physicians near Dr. Duffy
Counts of emergency medicine physicians 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. Jillian Britt Duffy billed Medicare for 150 services in 2024
CMS data shows 150 Medicare services from Dr. Duffy across 3 procedure codes in 2024, for 121 Medicare patients. Medicare paid $15,555 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Duffy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 582024: 10174%
- Tests and treatments
- 2023: 212024: 49133%
Dr. Duffy compared with the Illinois median for emergency medicine physicians, 2024
- Dr. Duffy
- Illinois median
- Medicare services
- 150vs 27445% below
- Medicare patients
- 121vs 27356% below
Medians across 2,281 emergency medicine physicians in Illinois 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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jillian Britt Duffy treated 121 Medicare patients in 2024, average age 70
CMS counts 121 Medicare patients who saw Dr. Duffy in 2024. The largest group is 65 to 74, with 44 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 85% are also on Medicaid. Their average risk score is 2.71, 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 48, with 47% women.
Dr. Duffy's Medicare patients by age, 2024
Dr. Duffy's Medicare patients by sex, 2024
- Women6352%
- Men5848%
Chronic conditions among Dr. Duffy's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Diabetes60%
- Arthritis58%
- Ischemic heart disease45%
- Chronic kidney disease43%
- Heart failure43%
- COPD33%
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 48
Patient panel by sex, all payers
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jillian Britt Duffy wrote 31 Medicare Part D claims in 2024
In 2024, Dr. Duffy wrote 31 Medicare Part D claims for 24 patients. 97% of them were for generic drugs.
Dr. Duffy's Part D claims by kind of drug, 2024
- Generic30 claims97%
- Brand-name and other1 claims3%
Drug classes CMS tracks in Dr. Duffy's Part D claims, 2024
- Antibiotics35%11 of 31 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Jillian Britt Duffy scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Duffy for performance year 2024, reported as part of a group. Dr. Duffy accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Duffy's MIPS scores, performance year 2024
- 93of 100Final score
- 86.8of 100Quality
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Jillian Britt Duffy received $17 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Duffy from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $17.
Companies that paid Dr. Duffy the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jillian Britt Duffy graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Dr. Duffy graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jillian Britt Duffy'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 | Dmand AI Affiliation 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) |
| Part D prescribing | Medicare Part D Prescribers - 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)Clinician Public Reporting: Overall MIPS Performance (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. Jillian Britt Duffy
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. Jillian Britt Duffy's NPI number?
Dr. Jillian Britt Duffy's NPI number is 1942705884. It was assigned on March 23, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Jillian Britt Duffy?
Dr. Jillian Britt Duffy is an emergency medicine physician in Chicago, Illinois. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Jillian Britt Duffy practice?
Dr. Duffy practices at 2701 W 68th Street, Chicago, IL 60629. Dr. Duffy's primary practice is Holy Cross Hospital in Chicago, Illinois, part of Sinai Health System.
What is Dr. Jillian Britt Duffy's office phone number?
The practice phone on file for Dr. Duffy is (773) 884-9000.
What is Dr. Jillian Britt Duffy's medical license number?
Dr. Duffy holds Illinois license 036163109, one of the licenses on file in 2 states.
Which states has Dr. Jillian Britt Duffy been licensed in?
Dmand AI has state licenses on file for Dr. Duffy in Illinois and Massachusetts.
Which hospitals is Dr. Jillian Britt Duffy affiliated with?
Dr. Duffy practices at Holy Cross Hospital in Chicago, Illinois. Dr. Duffy is also affiliated with Mount Sinai Hospital.
What medical group is Dr. Jillian Britt Duffy part of?
Dr. Duffy is linked to CEP America.
Does Dr. Jillian Britt Duffy accept Medicare?
Yes. CMS data shows Dr. Duffy billed Medicare for 150 services in 2024, and Dr. Duffy accepts Medicare assignment.
What is Dr. Jillian Britt Duffy's MIPS score?
Dr. Duffy's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Jillian Britt Duffy see?
CMS counts 121 Medicare patients who saw Dr. Duffy in 2024, with an average age of 70.
What services does Dr. Jillian Britt Duffy bill to Medicare?
In 2024, Dr. Duffy's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and critical care (99291).
Where did Dr. Jillian Britt Duffy go to medical school?
Dr. Duffy graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2018.
Has Dr. Jillian Britt Duffy received payments from drug or device companies?
CMS Open Payments shows $17 in general payments to Dr. Duffy from 1 company from 2017 to 2017. The largest total came from Genentech, Inc.
How long has Dr. Jillian Britt Duffy been practicing?
Dr. Duffy graduated from medical school in 2018, 8 years ago.
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