Dr. Mark John Piotrowski, MD
- Medicare services, 2024
- 4,717
- Medicare patients, 2024
- 1,908
- Part D claims, 2024
- 1,791
- MIPS score, 2024
- 91
- Hospital affiliations
- 2
- Practice address
- 1555 N Barrington Rd, Hoffman Estates, IL 60169
- Practice phone
- Call (847) 843-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Piotrowski'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. Mark John Piotrowski is an ophthalmologist in Hoffman Estates, Illinois
Dr. Piotrowski practices at Ascension Saint Alexius in Hoffman Estates, Illinois, part of Ascension Health Alliance.
Dr. Piotrowski's NPI, 1417059114, was assigned on September 2, 2006. Dr. Piotrowski graduated from Rush Medical College of Rush University in 1999. Dr. Piotrowski holds Illinois license 036108737.
- NPI
- 1417059114NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698954600
- NPI enumeration date
- September 2, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (847) 843-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark John Piotrowski practices at Ascension Saint Alexius in Hoffman Estates, Illinois
Dr. Piotrowski's primary practice is Ascension Saint Alexius, at 1555 N Barrington Rd, Hoffman Estates, IL 60169 in Cook County. The practice phone is (847) 843-2000.
- Ascension Saint Alexius1555 N Barrington Rd, Hoffman Estates, IL 60169 · Cook CountyPhone(847) 843-2000
Source: Dmand AI Affiliation Data
Dr. Mark John Piotrowski is affiliated with 4 sites of care and 1 medical group
Dr. Piotrowski's primary practice is Ascension Saint Alexius in Hoffman Estates, Illinois, part of Ascension Health Alliance. Dr. Piotrowski is also affiliated with Ascension Alexian Brothers. Dmand AI also links Dr. Piotrowski to 1 more breast imaging center, 1 group practice or clinic and 1 medical group, 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. Mark John Piotrowski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Piotrowski practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ascension Saint Alexius | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Ascension Health Alliance and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark John Piotrowski is one of 692 ophthalmologists in Illinois
Ophthalmology is Dr. Piotrowski's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Piotrowski is licensed in Illinois.
Specialties and state licenses
- Ophthalmology, IllinoisPrimary
Ophthalmologists near Dr. Piotrowski
Counts of ophthalmologists 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. Mark John Piotrowski billed Medicare for 4,717 services in 2024
CMS data shows 4,717 Medicare services from Dr. Piotrowski across 17 procedure codes in 2024, for 1,908 Medicare patients. Medicare paid $451,001 for them.
Dr. Piotrowski's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 2,9702024: 2,7747%
- Office and hospital visits
- 2023: 1,3602024: 1,3943%
- Surgery
- 2023: 5762024: 50912%
- Imaging
- 2023: 712024: 4044%
Where Dr. Piotrowski's Medicare services took place, 2024
- In an office4,41694%
- In a facility3016%
Dr. Piotrowski compared with the Illinois median for ophthalmologists, 2024
- Dr. Piotrowski
- Illinois median
- Medicare services
- 4,717vs 1,5443.1 times
- Medicare patients
- 1,908vs 5773.3 times
- Part D claims
- 1,677vs 5822.9 times
Medians across 710 ophthalmologists in Illinois with Dmand AI profiles that report each measure.
Dr. Piotrowski'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 Dr. Piotrowski?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Piotrowski and other ophthalmologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark John Piotrowski treated 1,908 Medicare patients in 2024, average age 76
CMS counts 1,908 Medicare patients who saw Dr. Piotrowski in 2024. The largest group is 65 to 74, with 825 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 3% are also on Medicaid. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Piotrowski's median patient age at 73, with 56% women.
Dr. Piotrowski's Medicare patients by age, 2024
Dr. Piotrowski's Medicare patients by sex, 2024
- Women1,17061%
- Men73839%
Chronic conditions among Dr. Piotrowski's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- Diabetes30%
- Ischemic heart disease29%
- Anxiety19%
- Chronic kidney disease19%
- Atrial fibrillation16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Piotrowski'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
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark John Piotrowski wrote 1,791 Medicare Part D claims in 2024
In 2024, Dr. Piotrowski wrote 1,791 Medicare Part D claims for 606 patients. 60% of them were for generic drugs. CMS names the drug for 1,677 of them, across 21 drugs with 11 or more claims each, at $170,262 in total drug cost. In 2023, CMS named 1,568 claims across 22 drugs.
Dr. Piotrowski's Part D claims by kind of drug, 2024
- Generic1,080 claims60%
- Brand-name711 claims40%
Dr. Piotrowski'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. Piotrowski's Part D claims, 2024
- Antibiotics4%68 of 1,791 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: 1,5682024: 1,6777%
Drugs named by CMS: 21 in 2024, 22 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. Mark John Piotrowski scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Piotrowski for performance year 2024, reported as part of a group. Dr. Piotrowski accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 505 procedures of cataract surgery by Dr. Piotrowski, more than 95% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Piotrowski's MIPS scores, performance year 2024
- 91of 100Final score
- 90.1of 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.
Where Dr. Piotrowski ranks in Medicare procedure volume
- Cataract surgery
- 95th percentile505 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Mark John Piotrowski received $11,403 in industry payments from 2016 to 2025
CMS Open Payments shows 258 general payments to Dr. Piotrowski from 30 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 83% of the total. Alcon Laboratories Inc paid the most, $2,640.
General payments to Dr. Piotrowski by program year, 2016 to 2025
General payments to Dr. Piotrowski by kind, 2016 to 2025
- Food and beverage$9,52183%
- Consulting fees$1,73215%
- Speaker and faculty fees$1501%
Companies that paid Dr. Piotrowski 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. Mark John Piotrowski graduated from Rush Medical College of Rush University
Dr. Piotrowski graduated from Rush Medical College of Rush University in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark John Piotrowski'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)Doctors and Clinicians Utilization Data (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. Mark John Piotrowski
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. Mark John Piotrowski's NPI number?
Dr. Mark John Piotrowski's NPI number is 1417059114. It was assigned on September 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark John Piotrowski?
Dr. Mark John Piotrowski is an ophthalmologist in Hoffman Estates, Illinois. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Mark John Piotrowski practice?
Dr. Piotrowski practices at 1555 N Barrington Rd, Hoffman Estates, IL 60169. Dr. Piotrowski's primary practice is Ascension Saint Alexius in Hoffman Estates, Illinois, part of Ascension Health Alliance. Dmand AI also links Dr. Piotrowski to 1 breast imaging center, 1 group practice or clinic and 1 medical group.
What is Dr. Mark John Piotrowski's office phone number?
The practice phone on file for Dr. Piotrowski is (847) 843-2000.
What is Dr. Mark John Piotrowski's medical license number?
Dr. Piotrowski holds Illinois license 036108737.
Which hospitals is Dr. Mark John Piotrowski affiliated with?
Dr. Piotrowski practices at Ascension Saint Alexius in Hoffman Estates, Illinois. Dr. Piotrowski is also affiliated with Ascension Alexian Brothers.
Does Dr. Mark John Piotrowski accept Medicare?
Yes. CMS data shows Dr. Piotrowski billed Medicare for 4,717 services in 2024, and Dr. Piotrowski accepts Medicare assignment.
What is Dr. Mark John Piotrowski's MIPS score?
Dr. Piotrowski's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mark John Piotrowski see?
CMS counts 1,908 Medicare patients who saw Dr. Piotrowski in 2024, with an average age of 76.
What services does Dr. Mark John Piotrowski bill to Medicare?
In 2024, Dr. Piotrowski's most billed Medicare services were eye exam or test (92014), office visit, established patient (99214) and eye exam or test (92134).
Show 4 more questionsShow fewer questions
Where did Dr. Mark John Piotrowski go to medical school?
Dr. Piotrowski graduated from Rush Medical College of Rush University in 1999.
What drugs does Dr. Mark John Piotrowski prescribe most?
In 2024 Medicare Part D data, Dr. Piotrowski's most prescribed drugs by claims were Latanoprost, Erythromycin and Dorzolamide-Timolol.
Has Dr. Mark John Piotrowski received payments from drug or device companies?
CMS Open Payments shows $11,403 in general payments to Dr. Piotrowski from 30 companies from 2016 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Dr. Mark John Piotrowski been practicing?
Dr. Piotrowski graduated from medical school in 1999, 27 years ago.
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