Michael Z. Grzeskowiak
- Medicare services, 2024
- 895
- Medicare patients, 2024
- 743
- Part D claims, 2024
- 740
- Hospital affiliations
- 5
- Industry payments
- $3,448
- Practice address
- 530 NE Glen Oak Ave, Peoria, IL 61603
- Practice phone
- Call (309) 655-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
OSF St Francis Medical Center & Children's Hospital of Illinois
Peoria, Illinois
Find Michael Grzeskowiak'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.
Michael Z. Grzeskowiak is a cardiologist in Peoria, Illinois
Michael Grzeskowiak practices at OSF St Francis Medical Center & Children's Hospital of Illinois in Peoria, Illinois.
Michael Grzeskowiak's NPI, 1215469218, was assigned on March 29, 2017. Michael Grzeskowiak graduated from Loyola University of Chicago, Stritch School of Medicine in 2017. Michael Grzeskowiak holds Illinois license 036171425.
- NPI
- 1215469218NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961895370
- NPI enumeration date
- March 29, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (309) 655-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Michael Z. Grzeskowiak practices at OSF St Francis Medical Center & Children's Hospital of Illinois in Peoria, Illinois
Michael Grzeskowiak's primary practice is OSF St Francis Medical Center & Children's Hospital of Illinois, at 530 NE Glen Oak Ave, Peoria, IL 61603 in Peoria County. The practice phone is (309) 655-2000.
- OSF St Francis Medical Center & Children's Hospital of Illinois530 NE Glen Oak Ave, Peoria, IL 61603 · Peoria CountyPhone(309) 655-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Michael Z. Grzeskowiak is affiliated with 8 sites of care and 4 medical groups
Michael Grzeskowiak's primary practice is OSF St Francis Medical Center & Children's Hospital of Illinois in Peoria, Illinois. Michael Grzeskowiak is also affiliated with OSF Saint Francis Medical Center. The medical group on file is OSF Multi-Specialty Group. Dmand AI also links Michael Grzeskowiak to 4 more hospitals, 3 medical groups and 2 group practices and clinics, 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 Michael Z. Grzeskowiak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Michael Grzeskowiak practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OSF St Francis Medical Center & Children's Hospital of Illinois | Available with a free account |
| +7 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Michael Z. Grzeskowiak is one of 908 cardiologists in Illinois
Cardiovascular disease is Michael Grzeskowiak's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Michael Grzeskowiak is licensed in Illinois.
Specialties and state licenses
- Cardiovascular disease, IllinoisPrimary
Cardiologists near Michael Grzeskowiak
Counts of cardiologists 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
Michael Z. Grzeskowiak billed Medicare for 895 services in 2024
CMS data shows 895 Medicare services from Michael Grzeskowiak across 16 procedure codes in 2024, for 743 Medicare patients. Medicare paid $26,426 for them.
Michael Grzeskowiak's Medicare services by type, 2022 to 2024
- 2022
- 2024
- Tests and treatments
- 2022: 02024: 769
- Office and hospital visits
- 2022: 1242024: 1262%
Where Michael Grzeskowiak's Medicare services took place, 2024
- In an office31135%
- In a facility58465%
Michael Grzeskowiak compared with the Illinois median for cardiologists, 2024
- Michael Grzeskowiak
- Illinois median
- Medicare services
- 895vs 1,93654% below
- Medicare patients
- 743vs 1,02327% below
- Part D claims
- 656vs 1,50256% below
Medians across 906 cardiologists in Illinois with Dmand AI profiles that report each measure.
Michael Grzeskowiak'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.
Need commercial claims for Michael Grzeskowiak?
Medicare shows one payer. Book a meeting to get commercial claims data for Michael Grzeskowiak and other cardiologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Michael Z. Grzeskowiak treated 743 Medicare patients in 2024, average age 74
CMS counts 743 Medicare patients who saw Michael Grzeskowiak in 2024. The largest group is 65 to 74, with 305 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 1.76, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Michael Grzeskowiak's median patient age at 73, with 51% women.
Michael Grzeskowiak's Medicare patients by age, 2024
Michael Grzeskowiak's Medicare patients by sex, 2024
- Women37150%
- Men37250%
Chronic conditions among Michael Grzeskowiak's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Ischemic heart disease40%
- Diabetes39%
- Chronic kidney disease38%
- Heart failure35%
- Atrial fibrillation31%
Share of Medicare patients with each condition. A patient can have several.
Michael Grzeskowiak'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
- Women51%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Michael Z. Grzeskowiak wrote 740 Medicare Part D claims in 2024
In 2024, Michael Grzeskowiak wrote 740 Medicare Part D claims for 224 patients. 81% of them were for generic drugs. CMS names the drug for 656 of them, across 16 drugs with 11 or more claims each, at $77,557 in total drug cost. In 2023, CMS named 55 claims across 4 drugs.
Michael Grzeskowiak's Part D claims by kind of drug, 2024
- Generic603 claims81%
- Brand-name137 claims19%
Michael Grzeskowiak'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 552024: 6561093%
Drugs named by CMS: 16 in 2024, 4 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
Michael Z. Grzeskowiak offers telehealth to Medicare patients
Michael Grzeskowiak accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Michael Grzeskowiak as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Michael Z. Grzeskowiak received $3,448 in industry payments from 2022 to 2025
CMS Open Payments shows 16 general payments to Michael Grzeskowiak from 3 drug and device companies from 2022 to 2025. Grants make up the largest share, 48% of the total. Abbott Laboratories paid the most, $3,334.
General payments to Michael Grzeskowiak by program year, 2022 to 2025
General payments to Michael Grzeskowiak by kind, 2022 to 2025
- Grants$1,66748%
- Travel and lodging$1,17734%
- Food and beverage$60418%
Companies that paid Michael Grzeskowiak the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Michael Z. Grzeskowiak graduated from Loyola University of Chicago, Stritch School of Medicine
Michael Grzeskowiak graduated from Loyola University of Chicago, Stritch School of Medicine in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Michael Z. Grzeskowiak'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 Michael Z. Grzeskowiak
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Michael Z. Grzeskowiak's NPI number?
Michael Z. Grzeskowiak's NPI number is 1215469218. It was assigned on March 29, 2017, and it is active in the NPI Registry.
What does Michael Z. Grzeskowiak specialize in?
Michael Z. Grzeskowiak is a cardiologist in Peoria, Illinois. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Michael Z. Grzeskowiak practice?
Michael Grzeskowiak practices at 530 NE Glen Oak Ave, Peoria, IL 61603. Michael Grzeskowiak's primary practice is OSF St Francis Medical Center & Children's Hospital of Illinois in Peoria, Illinois. Dmand AI also links Michael Grzeskowiak to 4 hospitals, 3 medical groups and 2 group practices and clinics.
What is Michael Z. Grzeskowiak's office phone number?
The practice phone on file for Michael Grzeskowiak is (309) 655-2000.
What is Michael Z. Grzeskowiak's medical license number?
Michael Grzeskowiak holds Illinois license 036171425.
Which hospitals is Michael Z. Grzeskowiak affiliated with?
Michael Grzeskowiak is affiliated with OSF Saint Francis Medical Center. Dmand AI links Michael Grzeskowiak to 4 more hospitals.
What medical group is Michael Z. Grzeskowiak part of?
Michael Grzeskowiak is linked to OSF Multi-Specialty Group. Dmand AI links Michael Grzeskowiak to 3 more medical groups.
Does Michael Z. Grzeskowiak accept Medicare?
Yes. CMS data shows Michael Grzeskowiak billed Medicare for 895 services in 2024, and Michael Grzeskowiak accepts Medicare assignment.
Does Michael Z. Grzeskowiak offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Michael Grzeskowiak as offering telehealth services.
How many Medicare patients does Michael Z. Grzeskowiak see?
CMS counts 743 Medicare patients who saw Michael Grzeskowiak in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Michael Z. Grzeskowiak bill to Medicare?
In 2024, Michael Grzeskowiak's most billed Medicare services were heart test or procedure (93010), heart test or procedure (93306) and heart test or procedure (93000).
Where did Michael Z. Grzeskowiak go to medical school?
Michael Grzeskowiak graduated from Loyola University of Chicago, Stritch School of Medicine in 2017.
What drugs does Michael Z. Grzeskowiak prescribe most?
In 2024 Medicare Part D data, Michael Grzeskowiak's most prescribed drugs by claims were Metoprolol Tartrate, Atorvastatin Calcium and Furosemide.
Has Michael Z. Grzeskowiak received payments from drug or device companies?
CMS Open Payments shows $3,448 in general payments to Michael Grzeskowiak from 3 companies from 2022 to 2025. The largest total came from Abbott Laboratories.
How long has Michael Z. Grzeskowiak been practicing?
Michael Grzeskowiak graduated from medical school in 2017, 9 years ago.
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