Dr. Michael F. Marzec, MD
- Medicare services, 2020
- 1,012
- Part D claims, 2022
- 18
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 2285 Sequoia Dr, Aurora, IL 60506-6209
- Practice phone
- Call (630) 859-6910
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
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Dr. Michael F. Marzec is an internist in Aurora, Illinois
Dr. Marzec practices in Aurora, Illinois.
Dr. Marzec's NPI, 1205847613, was assigned on August 10, 2006. Dr. Marzec holds Illinois license 036-064617.
- NPI
- 1205847613NPI Registry (opens in a new tab)
- NPI enumeration date
- August 10, 2006
- NPI status
- Active
- Practice phone
- (630) 859-6910
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Michael F. Marzec's practice address is in Aurora, Illinois
Dr. Marzec's practice address in the NPI Registry is 2285 Sequoia Dr, Aurora, IL 60506-6209. The practice phone is (630) 859-6910.
- NPI Registry address2285 Sequoia Dr, Aurora, IL 60506-6209Phone(630) 859-6910
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Michael F. Marzec's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marzec practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Marzec's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael F. Marzec is one of 5,652 internists in Illinois
Internal medicine is Dr. Marzec's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Marzec is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Marzec
Counts of internists 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. Michael F. Marzec billed Medicare for 1,012 services in 2020
CMS data shows 1,012 Medicare services from Dr. Marzec across 12 procedure codes in 2020. Medicare paid $48,939 for them. Every service was in an office.
Dr. Marzec's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 9122020: 43652%
- Other services
- 2019: 3572020: 20941%
- Tests and treatments
- 2019: 5632020: 19665%
- Lab and pathology
- 2019: 3812020: 17155%
Dr. Marzec compared with the Illinois median for internists, 2020
- Dr. Marzec
- Illinois median
- Medicare services
- 1,012vs 56679% above
- Part D claims
- 18vs 28494% below
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Marzec's most billed Medicare procedure codes, 2020
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. Marzec and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael F. Marzec's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Marzec's median patient age at 73, with 34% women.
Dr. Marzec's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women34%
- Men66%
Source: Dmand AI Patient Panel Data
Dr. Michael F. Marzec wrote 18 Medicare Part D claims in 2022
In 2022, Dr. Marzec wrote 18 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $97 in total drug cost. In 2021, CMS named 403 claims across 16 drugs.
Dr. Marzec's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 4032022: 1896%
Drugs named by CMS: 1 in 2022, 16 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Sources for Dr. Michael F. Marzec'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 |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. Michael F. Marzec
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. Michael F. Marzec's NPI number?
Dr. Michael F. Marzec's NPI number is 1205847613. It was assigned on August 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael F. Marzec?
Dr. Michael F. Marzec is an internist in Aurora, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Michael F. Marzec practice?
Dr. Marzec practices at 2285 Sequoia Dr, Aurora, IL 60506-6209.
What is Dr. Michael F. Marzec's office phone number?
The practice phone on file for Dr. Marzec is (630) 859-6910.
What is Dr. Michael F. Marzec's medical license number?
Dr. Marzec holds Illinois license 036-064617.
Does Dr. Michael F. Marzec accept Medicare?
Yes. CMS data shows Dr. Marzec billed Medicare for 1,012 services in 2020.
What services does Dr. Michael F. Marzec bill to Medicare?
In 2020, Dr. Marzec's most billed Medicare services were office visit, established patient (99214), lab and pathology test (85610) and heart test or procedure (93793).
What drugs does Dr. Michael F. Marzec prescribe most?
In 2022 Medicare Part D data, Dr. Marzec's most prescribed drugs by claims were Omeprazole.
How long has Dr. Michael F. Marzec been practicing?
Dr. Marzec's NPI was assigned in 2006.
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