ApoptosisCells, CulturedDown-Regulation
Dr. John J. Brems, MD
NPI1437139094
- Medicare services, 2024
- 42
- Medicare patients, 2024
- 46
- Part D claims, 2024
- 143
- Publications
- 19
- Industry payments
- $874
- Practice address
- 2025 Windsor Dr, Oak Brook, IL 60523-1586
- Practice phone
- Call (847) 390-5900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advocate Medical Group
Multi-specialty group site · Oak Brook, Illinois
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Dr. John J. Brems is a general surgeon in Elgin, Illinois
Dr. Brems practices at Advocate Medical Group in Oak Brook, Illinois.
Dr. Brems' NPI, 1437139094, was assigned on January 19, 2006. Dr. Brems graduated from Saint Louis University School Of Medicine in 1981. Dr. Brems holds Illinois license 036078342.
NPI and contact details
- NPI
- 1437139094NPI Registry (opens in a new tab)
- NPI enumeration date
- January 19, 2006
- NPI status
- Active
- Practice phone
- (847) 390-5900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John J. Brems practices in Oak Brook and Elgin
Dr. Brems' primary practice is Advocate Medical Group, at 2025 Windsor Dr, Oak Brook, IL 60523-1586. The practice phone is (847) 390-5900. The NPI Registry lists Dr. Brems' practice address as 1425 N Randall Rd, Elgin, IL 60123.
- Advocate Medical GroupPrimary2025 Windsor Dr, Oak Brook, IL 60523-1586Phone(847) 390-5900
- NPI Registry address1425 N Randall Rd, Elgin, IL 60123 · Kane CountyPhone(224) 359-0100
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. John J. Brems is affiliated with 1 site of care and 1 medical group
Dr. Brems' primary practice is Advocate Medical Group in Oak Brook, Illinois. Dmand AI also links Dr. Brems to 1 medical group, named with a free account.
Advocate Medical GroupPrimary
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. John J. Brems' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Brems practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advocate Medical Group | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John J. Brems is one of 1,217 general surgeons in Illinois
Surgery is Dr. Brems' primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Brems is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Brems' licenses on file in 3 states: Illinois, California and Arkansas.
Specialties and state licenses
- Surgery, IllinoisPrimary
- California license
- Arkansas license
Clinical focus
Dmand AI lists abdominal adhesion surgery, acute gallbladder or bile duct inflammation, colon removal, esophagus, stomach, or upper small intestine surgery, gallbladder removal and groin hernia surgery among the conditions Dr. Brems treats.
General surgeons near Dr. Brems
Counts of general surgeons 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. John J. Brems billed Medicare for 42 services in 2024
CMS data shows 42 Medicare services from Dr. Brems across 2 procedure codes in 2024, for 46 Medicare patients. Medicare paid $2,387 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202442
Medicare patients46
Paid by Medicare$2,387
Procedure codes2
Dr. Brems' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2132024: 4280%
Dr. Brems compared with the Illinois median for general surgeons, 2024
- Dr. Brems
- Illinois median
- Medicare services
- 42vs 19478% below
- Medicare patients
- 46vs 14468% below
- Part D claims
- 81vs 282.9 times
Medians across 1,031 general surgeons in Illinois with Dmand AI profiles that report each measure.
Dr. Brems' 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.
Need commercial claims for Dr. Brems?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Brems and other general surgeons in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John J. Brems treated 46 Medicare patients in 2024, average age 73
CMS counts 46 Medicare patients who saw Dr. Brems in 2024. The largest group is 65 to 74, with 24 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.12, 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. Brems' median patient age at 74, with 50% women.
Medicare patients, 202446
Average age73
Average risk score2.12
Dr. Brems' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Brems' Medicare patients by sex, 2024
- Women2657%
- Men2043%
Chronic conditions among Dr. Brems' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Chronic kidney disease43%
- Cancer41%
- Diabetes41%
- Anxiety33%
- Ischemic heart disease30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Brems' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John J. Brems wrote 143 Medicare Part D claims in 2024
In 2024, Dr. Brems wrote 143 Medicare Part D claims for 38 patients. 76% of them were for generic drugs. CMS names the drug for 81 of them, across 4 drugs with 11 or more claims each, at $75,634 in total drug cost. In 2023, CMS named 193 claims across 6 drugs.
Part D claims, 2024143
Drugs named by CMS4
Total drug cost$75,634
Part D patients38
Dr. Brems' Part D claims by kind of drug, 2024
- Generic109 claims76%
- Brand-name34 claims24%
Dr. Brems' 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. Brems' Part D claims, 2024
- Opioids23%33 of 143 claims
- Antibiotics8%12 of 143 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: 1932024: 8158%
Drugs named by CMS: 4 in 2024, 6 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
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Dr. John J. Brems has 19 publications on record
Dmand AI links 19 papers to Dr. Brems, published from 2005 to 2012. 2010 was the busiest year, with 2. The most frequent topics are Apoptosis, Liver Transplantation and Rats, Sprague-Dawley. Dr. Brems has published most often in Cell Signal. Dr. Brems' most frequent co-authors are Paul J. Pockros, MD, Ryan Michael Thomas, MD and Max L. Elliott, MD.
Papers19
Years published2005 to 2012
Dr. Brems' papers by year, 2005 to 2012
Topics Dr. Brems writes about most
- Apoptosis
- Liver Transplantation
- Rats, Sprague-Dawley
- Hepatocytes
- Liver
- Signal Transduction
- Glycochenodeoxycholic Acid
- Survivin
Dr. Brems' most frequent co-authors
- Paul J. Pockros, MD3 shared papers
- Ryan Michael Thomas, MD2 shared papers
- Max L. Elliott, MD1 shared paper
Recent publications by Dr. Brems
AmidinesApoptosisBenzylamines
Biochim Biophys Acta
ApoptosisGlycochenodeoxycholic AcidMicrotubule-Associated Proteins
Amino Acid Chloromethyl KetonesApoptosisBase Sequence
See who Dr. Brems researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Brems works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John J. Brems received $874 in industry payments from 2016 to 2025
CMS Open Payments shows 10 general payments to Dr. Brems from 3 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 80% of the total. Intuitive Surgical, Inc. paid the most, $794.
General payments to Dr. Brems by program year, 2016 to 2025
General payments to Dr. Brems by kind, 2016 to 2025
$874in total
- Travel and lodging$69680%
- Food and beverage$13215%
- Education$465%
Companies that paid Dr. Brems 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. John J. Brems has 1 award and honors on record
Dmand AI lists 1 award for Dr. Brems. Dr. Brems serves on Chicago institute of medicine.
Awards and honors for Dr. Brems
- Undated
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. John J. Brems graduated from Saint Louis University School Of Medicine
Dr. Brems graduated from Saint Louis University School Of Medicine in 1981. Dr. Brems is a member of ACS.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. John J. Brems accepts plans from 8 insurance carriers
Dr. Brems is in network with 8 carriers, including Elevance, Aetna and HCSC. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Elevance
- Aetna
- HCSC
- Blue Cross Blue Shield of Michigan
- Cigna
- Blue Cross Blue Shield of Massachusetts
- Humana
- Regence Health Plans
Plan types Dr. Brems accepts, by number of carriers
- Medicare8
- PPO8
- HMO5
- POS5
- EPO2
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. John J. Brems'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. John J. Brems
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. John J. Brems' NPI number?
Dr. John J. Brems' NPI number is 1437139094. It was assigned on January 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John J. Brems?
Dr. John J. Brems is a general surgeon in Elgin, Illinois. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. John J. Brems practice?
Dr. Brems practices at 2025 Windsor Dr, Oak Brook, IL 60523-1586. Dr. Brems also practices at 1425 N Randall Rd, Elgin, IL 60123. Dr. Brems' primary practice is Advocate Medical Group in Oak Brook, Illinois. Dmand AI also links Dr. Brems to 1 medical group.
What is Dr. John J. Brems' office phone number?
The practice phone on file for Dr. Brems is (847) 390-5900.
What is Dr. John J. Brems' medical license number?
Dr. Brems holds Illinois license 036078342, one of the licenses on file in 3 states.
Which states has Dr. John J. Brems been licensed in?
Dmand AI has state licenses on file for Dr. Brems in Illinois (1989 to 2026), California (since 1986) and Arkansas (1989 to 1991).
Does Dr. John J. Brems accept Medicare?
Yes. CMS data shows Dr. Brems billed Medicare for 42 services in 2024.
How many Medicare patients does Dr. John J. Brems see?
CMS counts 46 Medicare patients who saw Dr. Brems in 2024, with an average age of 73.
Is Dr. John J. Brems board certified?
Yes. Dr. Brems is board certified in surgery by the American Board of Surgery.
What services does Dr. John J. Brems bill to Medicare?
In 2024, Dr. Brems' most billed Medicare services were hospital inpatient care (99232) and hospital inpatient care (99221).
Show 7 more questionsShow fewer questions
Where did Dr. John J. Brems go to medical school?
Dr. Brems graduated from Saint Louis University School Of Medicine in 1981.
What drugs does Dr. John J. Brems prescribe most?
In 2024 Medicare Part D data, Dr. Brems' most prescribed drugs by claims were Pantoprazole Sodium, Creon and Hydrocodone-Acetaminophen.
Has Dr. John J. Brems received payments from drug or device companies?
CMS Open Payments shows $874 in general payments to Dr. Brems from 3 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. John J. Brems been practicing?
Dr. Brems graduated from medical school in 1981, 45 years ago.
Does Dr. John J. Brems do research?
Dmand AI links 19 publications to Dr. Brems, published from 2005 to 2012.
Who does Dr. John J. Brems publish with?
Dr. Brems' most frequent co-authors are Paul J. Pockros, MD (3 shared papers), Ryan Michael Thomas, MD (2 shared papers) and Max L. Elliott, MD (1 shared paper).
What insurance does Dr. John J. Brems accept?
Dr. Brems is in network with 8 carriers, including Elevance, Aetna and HCSC. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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