Dr. Leszek J. Ballarin, MD
- Medicare services, 2024
- 2,755
- Medicare patients, 2024
- 219
- Part D claims, 2024
- 7,192
- MIPS score, 2024
- 27
- Hospital affiliations
- 4
- Practice address
- 7045 W Belmont Ave, Chicago, IL 60634
- Practice phone
- Call (773) 745-7377
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Leszek J Ballarin MD, SC
Chicago, Illinois
Find Dr. Ballarin'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. Leszek J. Ballarin is an internist in Chicago, Illinois
Dr. Ballarin practices at Leszek J Ballarin MD, SC in Chicago, Illinois.
Dr. Ballarin's NPI, 1720088107, was assigned on July 27, 2005. Dr. Ballarin holds Illinois license 036103966.
- NPI
- 1720088107NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618150459
- NPI enumeration date
- July 27, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (773) 745-7377
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Leszek J. Ballarin practices at Leszek J Ballarin MD, SC in Chicago, Illinois
Dr. Ballarin's primary practice is Leszek J Ballarin MD, SC, at 7045 W Belmont Ave, Chicago, IL 60634 in Cook County. The practice phone is (773) 745-7377.
- Leszek J Ballarin MD, SC7045 W Belmont Ave, Chicago, IL 60634 · Cook CountyPhone(773) 745-7377
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Leszek J. Ballarin is affiliated with 7 sites of care and 1 medical group
Dr. Ballarin's primary practice is Leszek J Ballarin MD, SC in Chicago, Illinois. Dr. Ballarin is also affiliated with Resurrection Medical Center. The medical group on file is Leszek J Ballarin MD, SC. Dmand AI also links Dr. Ballarin to 3 more hospitals, 1 group practice or clinic and 1 home health agency, 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. Leszek J. Ballarin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ballarin practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Leszek J Ballarin MD, SC | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Leszek J. Ballarin is one of 5,652 internists in Illinois
Internal medicine is Dr. Ballarin's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Ballarin is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Ballarin
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. Leszek J. Ballarin billed Medicare for 2,755 services in 2024
CMS data shows 2,755 Medicare services from Dr. Ballarin across 7 procedure codes in 2024, for 219 Medicare patients. Medicare paid $125,201 for them. Every service was in an office.
Dr. Ballarin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,3012024: 1,2236%
- Other services
- 2023: 02024: 1,163
- Surgery
- 2023: 3382024: 29612%
- Tests and treatments
- 2023: 1292024: 7343%
Dr. Ballarin compared with the Illinois median for internists, 2024
- Dr. Ballarin
- Illinois median
- Medicare services
- 2,755vs 5664.9 times
- Medicare patients
- 219vs 2085% above
- Part D claims
- 6,641vs 28423.4 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Ballarin'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. Leszek J. Ballarin treated 219 Medicare patients in 2024, average age 77
CMS counts 219 Medicare patients who saw Dr. Ballarin in 2024. The largest group is 75 to 84, with 90 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 57% are also on Medicaid. Their average risk score is 1.25, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ballarin's median patient age at 73, with 48% women.
Dr. Ballarin's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ballarin's Medicare patients by sex, 2024
- Women14365%
- Men7635%
Chronic conditions among Dr. Ballarin's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis69%
- Ischemic heart disease47%
- Heart failure33%
- COPD31%
- Diabetes30%
- Mood disorders21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ballarin'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
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Leszek J. Ballarin wrote 7,192 Medicare Part D claims in 2024
In 2024, Dr. Ballarin wrote 7,192 Medicare Part D claims for 532 patients. 87% of them were for generic drugs. CMS names the drug for 6,641 of them, across 88 drugs with 11 or more claims each, at $530,257 in total drug cost. In 2023, CMS named 6,722 claims across 91 drugs.
Dr. Ballarin's Part D claims by kind of drug, 2024
- Generic6,253 claims87%
- Brand-name821 claims11%
- Other118 claims2%
Dr. Ballarin'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. Ballarin's Part D claims, 2024
- Opioids0%32 of 7,192 claims
- Antibiotics4%298 of 7,192 claims
- Antipsychotics, patients 65 and over0%15 of 7,192 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: 6,7222024: 6,6411%
Drugs named by CMS: 88 in 2024, 91 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. Leszek J. Ballarin scored 27 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 27 out of 100 for Dr. Ballarin for performance year 2024, reported individually. Dr. Ballarin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ballarin as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Ballarin's MIPS scores, performance year 2024
- 27of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 89of 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. Leszek J. Ballarin received $1,374 in industry payments from 2016 to 2023
CMS Open Payments shows 78 general payments to Dr. Ballarin from 18 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 94% of the total. Novo Nordisk Inc paid the most, $239.
General payments to Dr. Ballarin by program year, 2016 to 2023
General payments to Dr. Ballarin by kind, 2016 to 2023
- Food and beverage$1,29894%
- Education$766%
Companies that paid Dr. Ballarin the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Leszek J. Ballarin's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Leszek J. Ballarin
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. Leszek J. Ballarin's NPI number?
Dr. Leszek J. Ballarin's NPI number is 1720088107. It was assigned on July 27, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Leszek J. Ballarin?
Dr. Leszek J. Ballarin is an internist in Chicago, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Leszek J. Ballarin practice?
Dr. Ballarin practices at 7045 W Belmont Ave, Chicago, IL 60634. Dr. Ballarin's primary practice is Leszek J Ballarin MD, SC in Chicago, Illinois. Dmand AI also links Dr. Ballarin to 3 hospitals, 1 group practice or clinic and 1 home health agency.
What is Dr. Leszek J. Ballarin's office phone number?
The practice phone on file for Dr. Ballarin is (773) 745-7377.
What is Dr. Leszek J. Ballarin's medical license number?
Dr. Ballarin holds Illinois license 036103966.
Which hospitals is Dr. Leszek J. Ballarin affiliated with?
Dr. Ballarin is affiliated with Resurrection Medical Center. Dmand AI links Dr. Ballarin to 3 more hospitals.
What medical group is Dr. Leszek J. Ballarin part of?
Dr. Ballarin is linked to Leszek J Ballarin MD, SC.
Does Dr. Leszek J. Ballarin accept Medicare?
Yes. CMS data shows Dr. Ballarin billed Medicare for 2,755 services in 2024, and Dr. Ballarin accepts Medicare assignment.
Does Dr. Leszek J. Ballarin offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ballarin as offering telehealth services.
What is Dr. Leszek J. Ballarin's MIPS score?
Dr. Ballarin's MIPS final score for performance year 2024 is 27 out of 100, reported individually.
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How many Medicare patients does Dr. Leszek J. Ballarin see?
CMS counts 219 Medicare patients who saw Dr. Ballarin in 2024, with an average age of 77.
What services does Dr. Leszek J. Ballarin bill to Medicare?
In 2024, Dr. Ballarin's most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and surgery: heart and blood vessels (36415).
What drugs does Dr. Leszek J. Ballarin prescribe most?
In 2024 Medicare Part D data, Dr. Ballarin's most prescribed drugs by claims were Lisinopril, Rosuvastatin Calcium and Metoprolol Succinate.
Has Dr. Leszek J. Ballarin received payments from drug or device companies?
CMS Open Payments shows $1,374 in general payments to Dr. Ballarin from 18 companies from 2016 to 2023. The largest total came from Novo Nordisk Inc.
How long has Dr. Leszek J. Ballarin been practicing?
Dr. Ballarin graduated from medical school in 1997, 29 years ago.
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