Dr. Brian Mikulan Maxfield, DO
- Medicare services, 2024
- 1,412
- Medicare patients, 2024
- 377
- Part D claims, 2024
- 2,982
- MIPS score, 2024
- 92
- Hospital affiliations
- 3
- Practice address
- 1s224 Summit Avenue Ste 201, Oakbrook Terrace, IL 60181
- Practice phone
- Call (630) 916-7088
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Loyola Ambulatory Surgery Center at Oakbrook Terrace
Surgery Center - Medicare-Certified · Oakbrook Terrace, Illinois
Find Dr. Maxfield's professional email, personal email and mobile number
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Dr. Brian Mikulan Maxfield is an anesthesiologist in Oakbrook Terrace, Illinois
Dr. Maxfield practices at Loyola Ambulatory Surgery Center at Oakbrook Terrace in Oakbrook Terrace, Illinois.
Dr. Maxfield's NPI, 1184042533, was assigned on April 2, 2014. Dr. Maxfield holds Illinois license 036141740.
- NPI
- 1184042533NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496057788
- NPI enumeration date
- April 2, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (630) 916-7088
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Brian Mikulan Maxfield practices at Loyola Ambulatory Surgery Center at Oakbrook Terrace in Oakbrook Terrace, Illinois
Dr. Maxfield's primary practice is Loyola Ambulatory Surgery Center at Oakbrook Terrace, at 1s224 Summit Avenue Ste 201, Oakbrook Terrace, IL 60181. The practice phone is (630) 916-7088.
- Loyola Ambulatory Surgery Center at Oakbrook Terrace1s224 Summit Avenue Ste 201, Oakbrook Terrace, IL 60181Phone(630) 916-7088
Source: Dmand AI Affiliation Data
Dr. Brian Mikulan Maxfield is affiliated with 4 sites of care and 1 medical group
Dr. Maxfield's primary practice is Loyola Ambulatory Surgery Center at Oakbrook Terrace in Oakbrook Terrace, Illinois. Dr. Maxfield is also affiliated with Loyola University Medical Center. The medical group on file is Loyola University Medical Center. Dmand AI also links Dr. Maxfield to 2 more hospitals, 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. Brian Mikulan Maxfield's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maxfield practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Loyola Ambulatory Surgery Center at Oakbrook Terrace | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brian Mikulan Maxfield is one of 1,887 anesthesiologists in Illinois
Anesthesiology is Dr. Maxfield's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dmand AI has Dr. Maxfield's licenses on file in 3 states: Illinois, Indiana and New Jersey.
Specialties and state licenses
- Anesthesiology, IllinoisPrimary
- Pain medicine (anesthesiology), Indiana
- New Jersey license
Anesthesiologists near Dr. Maxfield
Counts of anesthesiologists 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. Brian Mikulan Maxfield billed Medicare for 1,412 services in 2024
CMS data shows 1,412 Medicare services from Dr. Maxfield across 23 procedure codes in 2024, for 377 Medicare patients. Medicare paid $97,724 for them.
Dr. Maxfield's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 5092024: 56812%
- Office and hospital visits
- 2023: 6612024: 42536%
- Drugs given in the office
- 2023: 1602024: 1488%
- Lab and pathology
- 2023: 2112024: 12043%
- Other services
- 2023: 1452024: 10031%
- Imaging
- 2023: 522024: 512%
Where Dr. Maxfield's Medicare services took place, 2024
- In an office82759%
- In a facility58541%
Dr. Maxfield compared with the Illinois median for anesthesiologists, 2024
- Dr. Maxfield
- Illinois median
- Medicare services
- 1,412vs 9115.5 times
- Medicare patients
- 377vs 1572.4 times
- Part D claims
- 2,911vs 26112.0 times
Medians across 1,742 anesthesiologists in Illinois with Dmand AI profiles that report each measure.
Dr. Maxfield'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. Maxfield and other anesthesiologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brian Mikulan Maxfield treated 377 Medicare patients in 2024, average age 66
CMS counts 377 Medicare patients who saw Dr. Maxfield in 2024. The largest group is 65 to 74, with 149 patients. 75% of them have arthritis, and 75% have high blood pressure. 43% are also on Medicaid. Their average risk score is 1.43, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Maxfield's median patient age at 71, with 67% women.
Dr. Maxfield's Medicare patients by age, 2024
Dr. Maxfield's Medicare patients by sex, 2024
- Women24164%
- Men13636%
Chronic conditions among Dr. Maxfield's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Mood disorders42%
- Anxiety40%
- Depression39%
- Diabetes35%
- COPD31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Maxfield's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women67%
- Men32%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Brian Mikulan Maxfield wrote 2,982 Medicare Part D claims in 2024
In 2024, Dr. Maxfield wrote 2,982 Medicare Part D claims for 619 patients. 99% of them were for generic drugs. CMS names the drug for 2,911 of them, across 17 drugs with 11 or more claims each, at $66,774 in total drug cost. In 2023, CMS named 3,955 claims across 21 drugs.
Dr. Maxfield's Part D claims by kind of drug, 2024
- Generic2,947 claims99%
- Brand-name35 claims1%
Dr. Maxfield'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. Maxfield's Part D claims, 2024
- Opioids66%1,981 of 2,982 claims
- Antibiotics0%11 of 2,982 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: 3,9552024: 2,91126%
Drugs named by CMS: 17 in 2024, 21 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. Brian Mikulan Maxfield scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Maxfield for performance year 2024, reported individually. Dr. Maxfield accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Maxfield's MIPS scores, performance year 2024
- 92of 100Final score
- 71of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 79of 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. Brian Mikulan Maxfield received $6,002 in industry payments from 2018 to 2024
CMS Open Payments shows 107 general payments to Dr. Maxfield from 7 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 87% of the total. Abbott Laboratories paid the most, $3,645.
General payments to Dr. Maxfield by program year, 2018 to 2024
General payments to Dr. Maxfield by kind, 2018 to 2024
- Food and beverage$5,23687%
- Travel and lodging$76513%
Companies that paid Dr. Maxfield the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Brian Mikulan Maxfield'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Brian Mikulan Maxfield
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. Brian Mikulan Maxfield's NPI number?
Dr. Brian Mikulan Maxfield's NPI number is 1184042533. It was assigned on April 2, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian Mikulan Maxfield?
Dr. Brian Mikulan Maxfield is an anesthesiologist in Oakbrook Terrace, Illinois. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Brian Mikulan Maxfield practice?
Dr. Maxfield practices at 1s224 Summit Avenue Ste 201, Oakbrook Terrace, IL 60181. Dr. Maxfield's primary practice is Loyola Ambulatory Surgery Center at Oakbrook Terrace in Oakbrook Terrace, Illinois. Dmand AI also links Dr. Maxfield to 2 hospitals.
What is Dr. Brian Mikulan Maxfield's office phone number?
The practice phone on file for Dr. Maxfield is (630) 916-7088.
What is Dr. Brian Mikulan Maxfield's medical license number?
Dr. Maxfield holds Illinois license 036141740, one of the licenses on file in 3 states.
Which states has Dr. Brian Mikulan Maxfield been licensed in?
Dmand AI has state licenses on file for Dr. Maxfield in Illinois, Indiana and New Jersey.
Which hospitals is Dr. Brian Mikulan Maxfield affiliated with?
Dr. Maxfield is affiliated with Loyola University Medical Center. Dmand AI links Dr. Maxfield to 2 more hospitals.
What medical group is Dr. Brian Mikulan Maxfield part of?
Dr. Maxfield is linked to Loyola University Medical Center.
Does Dr. Brian Mikulan Maxfield accept Medicare?
Yes. CMS data shows Dr. Maxfield billed Medicare for 1,412 services in 2024, and Dr. Maxfield accepts Medicare assignment.
What is Dr. Brian Mikulan Maxfield's MIPS score?
Dr. Maxfield's MIPS final score for performance year 2024 is 92 out of 100, reported individually.
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How many Medicare patients does Dr. Brian Mikulan Maxfield see?
CMS counts 377 Medicare patients who saw Dr. Maxfield in 2024, with an average age of 66.
What services does Dr. Brian Mikulan Maxfield bill to Medicare?
In 2024, Dr. Maxfield's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and injected or infused drug (J3301).
What drugs does Dr. Brian Mikulan Maxfield prescribe most?
In 2024 Medicare Part D data, Dr. Maxfield's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Oxycodone-Acetaminophen and Gabapentin.
Has Dr. Brian Mikulan Maxfield received payments from drug or device companies?
CMS Open Payments shows $6,002 in general payments to Dr. Maxfield from 7 companies from 2018 to 2024. The largest total came from Abbott Laboratories.
How long has Dr. Brian Mikulan Maxfield been practicing?
Dr. Maxfield graduated from medical school in 2014, 12 years ago.
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