Dr. Joseph M. Bresnahan, MD
- Medicare services, 2024
- 637
- Medicare patients, 2024
- 373
- Part D claims, 2024
- 908
- Hospital affiliations
- 2
- Industry payments
- $6,946
- Practice address
- 3249 South Oak Park Avenue, Berwyn, IL 60402
- Practice phone
- Call (708) 783-9100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Bresnahan'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. Joseph M. Bresnahan is a gastroenterologist in Berwyn, Illinois
Dr. Bresnahan practices at MacNeal Hospital in Berwyn, Illinois, part of Trinity Health.
Dr. Bresnahan's NPI, 1710925532, was assigned on June 3, 2006. Dr. Bresnahan graduated from Creighton University School of Medicine - Omaha in 1987. Dr. Bresnahan holds Illinois license 036079271.
- NPI
- 1710925532NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4284623760
- NPI enumeration date
- June 3, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (708) 783-9100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joseph M. Bresnahan practices at MacNeal Hospital in Berwyn, Illinois
Dr. Bresnahan's primary practice is MacNeal Hospital, at 3249 South Oak Park Avenue, Berwyn, IL 60402 in Cook County. The practice phone is (708) 783-9100.
- MacNeal Hospital3249 South Oak Park Avenue, Berwyn, IL 60402 · Cook CountyPhone(708) 783-9100
Source: Dmand AI Affiliation Data
Dr. Joseph M. Bresnahan is affiliated with 5 sites of care and 3 medical groups
Dr. Bresnahan's primary practice is MacNeal Hospital in Berwyn, Illinois, part of Trinity Health. Dr. Bresnahan is also affiliated with Loyola University Medical Center. The medical group on file is Loyola University Medical Center. Dmand AI also links Dr. Bresnahan to 3 more group practices and clinics and 2 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. Joseph M. Bresnahan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bresnahan practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MacNeal Hospital | Available with a free account |
| +4 more sites and 2 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 Trinity Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Joseph M. Bresnahan is one of 771 gastroenterologists in Illinois
Gastroenterology is Dr. Bresnahan's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Bresnahan is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Bresnahan is licensed in Illinois.
Specialties and state licenses
- Gastroenterology, IllinoisPrimary
Clinical focus
Dmand AI lists acid reflux, chronic indigestion, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy, gastroduodenitis, gastrointestinal bleeding and hemorrhoids among the conditions Dr. Bresnahan treats.
Gastroenterologists near Dr. Bresnahan
Counts of gastroenterologists 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. Joseph M. Bresnahan billed Medicare for 637 services in 2024
CMS data shows 637 Medicare services from Dr. Bresnahan across 12 procedure codes in 2024, for 373 Medicare patients. Medicare paid $69,059 for them.
Dr. Bresnahan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2852024: 3026%
- Surgery
- 2023: 2952024: 2911%
- Other services
- 2023: 322024: 4438%
Where Dr. Bresnahan's Medicare services took place, 2024
- In an office16225%
- In a facility47575%
Dr. Bresnahan compared with the Illinois median for gastroenterologists, 2024
- Dr. Bresnahan
- Illinois median
- Medicare services
- 637vs 49828% above
- Medicare patients
- 373vs 30721% above
- Part D claims
- 767vs 3702.1 times
Medians across 757 gastroenterologists in Illinois with Dmand AI profiles that report each measure.
Dr. Bresnahan'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. Bresnahan and other gastroenterologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joseph M. Bresnahan treated 373 Medicare patients in 2024, average age 74
CMS counts 373 Medicare patients who saw Dr. Bresnahan in 2024. The largest group is 65 to 74, with 176 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 1.50, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Bresnahan's median patient age at 70, with 54% women.
Dr. Bresnahan's Medicare patients by age, 2024
Dr. Bresnahan's Medicare patients by sex, 2024
- Women21357%
- Men16043%
Chronic conditions among Dr. Bresnahan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Diabetes45%
- Ischemic heart disease34%
- Chronic kidney disease30%
- Anxiety25%
- Heart failure24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Bresnahan'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
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joseph M. Bresnahan wrote 908 Medicare Part D claims in 2024
In 2024, Dr. Bresnahan wrote 908 Medicare Part D claims for 448 patients. 86% of them were for generic drugs. CMS names the drug for 767 of them, across 14 drugs with 11 or more claims each, at $35,110 in total drug cost. In 2023, CMS named 729 claims across 12 drugs.
Dr. Bresnahan's Part D claims by kind of drug, 2024
- Generic778 claims86%
- Brand-name130 claims14%
Dr. Bresnahan's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Bresnahan's Part D claims, 2024
- Antibiotics3%29 of 908 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7292024: 7675%
Drugs named by CMS: 14 in 2024, 12 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Joseph M. Bresnahan ranks in the 87th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Bresnahan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 169 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Bresnahan, more than 87% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Bresnahan ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 87th percentile169 procedures
- Colonoscopy
- 80th percentile100 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Joseph M. Bresnahan received $6,946 in industry payments from 2016 to 2025
CMS Open Payments shows 255 general payments to Dr. Bresnahan from 24 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $1,495.
General payments to Dr. Bresnahan by program year, 2016 to 2025
Companies that paid Dr. Bresnahan the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Joseph M. Bresnahan has 1 award and honors on record
Dmand AI lists 1 award for Dr. Bresnahan, most recently West Suburban Living Magazine in 2014.
Awards and honors for Dr. Bresnahan
- 2014
- West Suburban Living Magazine
Source: Dmand AI Professional Profile Data
Dr. Joseph M. Bresnahan graduated from Creighton University School of Medicine - Omaha
Dr. Bresnahan graduated from Creighton University School of Medicine - Omaha in 1987.
- Medical school
- Board certified in gastroenterology
Source: Dmand AI Professional Profile Data
Dr. Joseph M. Bresnahan accepts plans from 18 insurance carriers
Dr. Bresnahan is in network with 18 carriers, including Aetna, HCSC and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- HCSC
- Blue Cross Blue Shield of Michigan
- Cigna
- United Healthcare
- Elevance
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- +10 more carriersWith a free account
Plan types Dr. Bresnahan accepts, by number of carriers
- PPO11
- HMO9
- Medicare9
- POS6
- EPO4
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Joseph M. Bresnahan'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 and Drug (CMS) (opens in a new tab)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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Joseph M. Bresnahan
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. Joseph M. Bresnahan's NPI number?
Dr. Joseph M. Bresnahan's NPI number is 1710925532. It was assigned on June 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Joseph M. Bresnahan?
Dr. Joseph M. Bresnahan is a gastroenterologist in Berwyn, Illinois. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Joseph M. Bresnahan practice?
Dr. Bresnahan practices at 3249 South Oak Park Avenue, Berwyn, IL 60402. Dr. Bresnahan's primary practice is MacNeal Hospital in Berwyn, Illinois, part of Trinity Health. Dmand AI also links Dr. Bresnahan to 3 group practices and clinics and 2 medical groups.
What is Dr. Joseph M. Bresnahan's office phone number?
The practice phone on file for Dr. Bresnahan is (708) 783-9100.
What is Dr. Joseph M. Bresnahan's medical license number?
Dr. Bresnahan holds Illinois license 036079271.
Which hospitals is Dr. Joseph M. Bresnahan affiliated with?
Dr. Bresnahan practices at MacNeal Hospital in Berwyn, Illinois. Dr. Bresnahan is also affiliated with Loyola University Medical Center.
What medical group is Dr. Joseph M. Bresnahan part of?
Dr. Bresnahan is linked to Loyola University Medical Center. Dmand AI links Dr. Bresnahan to 2 more medical groups.
Does Dr. Joseph M. Bresnahan accept Medicare?
Yes. CMS data shows Dr. Bresnahan billed Medicare for 637 services in 2024, and Dr. Bresnahan accepts Medicare assignment.
How many Medicare patients does Dr. Joseph M. Bresnahan see?
CMS counts 373 Medicare patients who saw Dr. Bresnahan in 2024, with an average age of 74.
Is Dr. Joseph M. Bresnahan board certified?
Yes. Dr. Bresnahan is board certified in gastroenterology by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Joseph M. Bresnahan bill to Medicare?
In 2024, Dr. Bresnahan's most billed Medicare services were surgery: digestive system (45380), surgery: digestive system (43239) and office visit, established patient (99214).
Where did Dr. Joseph M. Bresnahan go to medical school?
Dr. Bresnahan graduated from Creighton University School of Medicine - Omaha in 1987.
What drugs does Dr. Joseph M. Bresnahan prescribe most?
In 2024 Medicare Part D data, Dr. Bresnahan's most prescribed drugs by claims were Gavilyte-G, Omeprazole and Pantoprazole Sodium.
Has Dr. Joseph M. Bresnahan received payments from drug or device companies?
CMS Open Payments shows $6,946 in general payments to Dr. Bresnahan from 24 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Joseph M. Bresnahan been practicing?
Dr. Bresnahan graduated from medical school in 1987, 39 years ago.
What insurance does Dr. Joseph M. Bresnahan accept?
Dr. Bresnahan is in network with 18 carriers, including Aetna, HCSC and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
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