Dr. Christopher P. Brenner, MD
- Medicare services, 2024
- 928
- Medicare patients, 2024
- 315
- Part D claims, 2024
- 5,263
- Hospital affiliations
- 5
- Industry payments
- $776
- Practice address
- 120 W 22nd St, Oak Brook, IL 60523
- Practice phone
- Call (708) 352-5222
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Nani Internal Med
Oak Brook, Illinois
Find Dr. Brenner'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. Christopher P. Brenner is a family medicine physician in Oak Brook, Illinois
Dr. Brenner practices at Nani Internal Med in Oak Brook, Illinois.
Dr. Brenner's NPI, 1629020102, was assigned on May 16, 2006. Dr. Brenner graduated from University of Colorado School of Medicine, Denver in 1985. Dr. Brenner holds Illinois license 036073572.
- NPI
- 1629020102NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810986874
- NPI enumeration date
- May 16, 2006
- NPI status
- Active
- Practice phone
- (708) 352-5222
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Christopher P. Brenner practices at Nani Internal Med in Oak Brook, Illinois
Dr. Brenner's primary practice is Nani Internal Med, at 120 W 22nd St, Oak Brook, IL 60523 in Dupage County. The practice phone is (708) 352-5222.
- Nani Internal Med120 W 22nd St, Oak Brook, IL 60523 · Dupage CountyPhone(708) 352-5222
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Christopher P. Brenner is affiliated with 10 sites of care and 2 medical groups
Dr. Brenner's primary practice is Nani Internal Med in Oak Brook, Illinois. Dr. Brenner is also affiliated with Loyola University Medical Center. The medical group on file is NANI - Nephrology Associates of Northern Illinois & Indiana. Dmand AI also links Dr. Brenner to 4 more hospitals, 2 home health agencies, 1 physician office, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Christopher P. Brenner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Brenner practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Nani Internal Med | Available with a free account |
| +9 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christopher P. Brenner is one of 5,105 family medicine physicians in Illinois
Family medicine is Dr. Brenner's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Brenner is licensed in Illinois.
Specialties and state licenses
- Family medicine, IllinoisPrimary
Family medicine physicians near Dr. Brenner
Counts of family 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. Christopher P. Brenner billed Medicare for 928 services in 2024
CMS data shows 928 Medicare services from Dr. Brenner across 6 procedure codes in 2024, for 315 Medicare patients. Medicare paid $64,622 for them. Every service was in an office.
Dr. Brenner's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5552024: 5896%
- Other services
- 2023: 2522024: 32730%
- Tests and treatments
- 2023: 402024: 1270%
Dr. Brenner compared with the Illinois median for family medicine physicians, 2024
- Dr. Brenner
- Illinois median
- Medicare services
- 928vs 3562.6 times
- Medicare patients
- 315vs 16097% above
- Part D claims
- 4,586vs 6187.4 times
Medians across 5,015 family medicine physicians in Illinois with Dmand AI profiles that report each measure.
Dr. Brenner'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. Christopher P. Brenner treated 315 Medicare patients in 2024, average age 76
CMS counts 315 Medicare patients who saw Dr. Brenner in 2024. The largest group is 75 to 84, with 140 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.18, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Brenner's median patient age at 72, with 44% women.
Dr. Brenner's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Brenner's Medicare patients by sex, 2024
- Women14646%
- Men16954%
Chronic conditions among Dr. Brenner's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Ischemic heart disease36%
- Diabetes24%
- Chronic kidney disease21%
- Atrial fibrillation17%
- Mood disorders17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Brenner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women44%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Christopher P. Brenner wrote 5,263 Medicare Part D claims in 2024
In 2024, Dr. Brenner wrote 5,263 Medicare Part D claims for 506 patients. 90% of them were for generic drugs. CMS names the drug for 4,586 of them, across 91 drugs with 11 or more claims each, at $197,409 in total drug cost. In 2023, CMS named 3,312 claims across 82 drugs.
Dr. Brenner's Part D claims by kind of drug, 2024
- Generic4,740 claims90%
- Brand-name482 claims9%
- Other41 claims1%
Dr. Brenner'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. Brenner's Part D claims, 2024
- Opioids3%171 of 5,263 claims
- Antibiotics3%155 of 5,263 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: 3,3122024: 4,58638%
Drugs named by CMS: 91 in 2024, 82 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. Christopher P. Brenner received $776 in industry payments from 2018 to 2025
CMS Open Payments shows 40 general payments to Dr. Brenner from 16 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $125.
General payments to Dr. Brenner by program year, 2018 to 2025
Companies that paid Dr. Brenner the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Christopher P. Brenner graduated from University of Colorado School of Medicine, Denver
Dr. Brenner graduated from University of Colorado School of Medicine, Denver in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Christopher P. Brenner'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Christopher P. Brenner
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. Christopher P. Brenner's NPI number?
Dr. Christopher P. Brenner's NPI number is 1629020102. It was assigned on May 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher P. Brenner?
Dr. Christopher P. Brenner is a family medicine physician in Oak Brook, Illinois. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Christopher P. Brenner practice?
Dr. Brenner practices at 120 W 22nd St, Oak Brook, IL 60523. Dr. Brenner's primary practice is Nani Internal Med in Oak Brook, Illinois. Dmand AI also links Dr. Brenner to 4 hospitals, 2 home health agencies, 1 physician office, 1 group practice or clinic and 1 medical group.
What is Dr. Christopher P. Brenner's office phone number?
The practice phone on file for Dr. Brenner is (708) 352-5222.
What is Dr. Christopher P. Brenner's medical license number?
Dr. Brenner holds Illinois license 036073572.
Which hospitals is Dr. Christopher P. Brenner affiliated with?
Dr. Brenner is affiliated with Loyola University Medical Center. Dmand AI links Dr. Brenner to 4 more hospitals.
What medical group is Dr. Christopher P. Brenner part of?
Dr. Brenner is linked to NANI - Nephrology Associates of Northern Illinois & Indiana. Dmand AI links Dr. Brenner to 1 more medical group.
Does Dr. Christopher P. Brenner accept Medicare?
Yes. CMS data shows Dr. Brenner billed Medicare for 928 services in 2024.
How many Medicare patients does Dr. Christopher P. Brenner see?
CMS counts 315 Medicare patients who saw Dr. Brenner in 2024, with an average age of 76.
What services does Dr. Christopher P. Brenner bill to Medicare?
In 2024, Dr. Brenner's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G2211).
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Where did Dr. Christopher P. Brenner go to medical school?
Dr. Brenner graduated from University of Colorado School of Medicine, Denver in 1985.
What drugs does Dr. Christopher P. Brenner prescribe most?
In 2024 Medicare Part D data, Dr. Brenner's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.
Has Dr. Christopher P. Brenner received payments from drug or device companies?
CMS Open Payments shows $776 in general payments to Dr. Brenner from 16 companies from 2018 to 2025. The largest total came from Amgen Inc.
How long has Dr. Christopher P. Brenner been practicing?
Dr. Brenner graduated from medical school in 1985, 41 years ago.
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