Dr. Mark Paul Leischner, MD
- Medicare services, 2024
- 10,734
- Medicare patients, 2024
- 427
- Part D claims, 2024
- 1,356
- Hospital affiliations
- 5
- Industry payments
- $1,995
- Practice address
- 2608 W Addison St, Chicago, IL 60618
- Practice phone
- Call (773) 756-3333
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Vascular Access Centers of Illinois at North Center LLC
Chicago, Illinois
Find Dr. Leischner'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 Paul Leischner is a nephrologist in Chicago, Illinois
Dr. Leischner practices at Vascular Access Centers of Illinois at North Center LLC in Chicago, Illinois.
Dr. Leischner's NPI, 1598708877, was assigned on June 14, 2006. Dr. Leischner graduated from Loyola University of Chicago, Stritch School of Medicine in 2001. Dr. Leischner holds Illinois license 036110702.
- NPI
- 1598708877NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547272288
- NPI enumeration date
- June 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (773) 756-3333
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Paul Leischner practices at Vascular Access Centers of Illinois at North Center LLC in Chicago, Illinois
Dr. Leischner's primary practice is Vascular Access Centers of Illinois at North Center LLC, at 2608 W Addison St, Chicago, IL 60618 in Cook County. The practice phone is (773) 756-3333.
- Vascular Access Centers of Illinois at North Center LLC2608 W Addison St, Chicago, IL 60618 · Cook CountyPhone(773) 756-3333
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark Paul Leischner is affiliated with 8 sites of care and 1 medical group
Dr. Leischner's primary practice is Vascular Access Centers of Illinois at North Center LLC in Chicago, Illinois. Dr. Leischner is also affiliated with Swedish Hospital. The medical group on file is Associates in Nephrology. Dmand AI also links Dr. Leischner to 4 more hospitals, 1 dialysis center and 1 group practice or clinic, 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. Mark Paul Leischner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leischner practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vascular Access Centers of Illinois at North Center LLC | Available with a free account |
| +7 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Paul Leischner is one of 534 nephrologists in Illinois
Nephrology is Dr. Leischner's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Leischner is licensed in Illinois.
Specialties and state licenses
- Nephrology, IllinoisPrimary
Nephrologists near Dr. Leischner
Counts of nephrologists 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 Paul Leischner billed Medicare for 10,734 services in 2024
CMS data shows 10,734 Medicare services from Dr. Leischner across 14 procedure codes in 2024, for 427 Medicare patients. Medicare paid $204,565 for them.
Dr. Leischner's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 4,6502024: 8,97193%
- Drugs given in the office
- 2023: 2642024: 710169%
- Office and hospital visits
- 2023: 9022024: 59934%
- Tests and treatments
- 2023: 3322024: 3058%
- Surgery
- 2023: 1372024: 1499%
Where Dr. Leischner's Medicare services took place, 2024
- In an office10,49998%
- In a facility2352%
Dr. Leischner compared with the Illinois median for nephrologists, 2024
- Dr. Leischner
- Illinois median
- Medicare services
- 10,734vs 1,2848.4 times
- Medicare patients
- 427vs 35720% above
- Part D claims
- 1,150vs 57899% above
Medians across 526 nephrologists in Illinois with Dmand AI profiles that report each measure.
Dr. Leischner'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. Leischner?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leischner and other nephrologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Paul Leischner treated 427 Medicare patients in 2024, average age 72
CMS counts 427 Medicare patients who saw Dr. Leischner in 2024. The largest group is 65 to 74, with 149 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 41% are also on Medicaid. Their average risk score is 4.84, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Leischner's median patient age at 70, with 42% women.
Dr. Leischner's Medicare patients by age, 2024
Dr. Leischner's Medicare patients by sex, 2024
- Women19345%
- Men23455%
Chronic conditions among Dr. Leischner's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes64%
- Ischemic heart disease51%
- Heart failure48%
- Arthritis44%
- Atrial fibrillation28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leischner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women42%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Paul Leischner wrote 1,356 Medicare Part D claims in 2024
In 2024, Dr. Leischner wrote 1,356 Medicare Part D claims for 217 patients. 84% of them were for generic drugs. CMS names the drug for 1,150 of them, across 27 drugs with 11 or more claims each, at $273,245 in total drug cost. In 2023, CMS named 1,148 claims across 30 drugs.
Dr. Leischner's Part D claims by kind of drug, 2024
- Generic1,140 claims84%
- Brand-name216 claims16%
Dr. Leischner'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: 1,1482024: 1,150No change
Drugs named by CMS: 27 in 2024, 30 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 Paul Leischner offers telehealth to Medicare patients
Dr. Leischner accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Leischner as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mark Paul Leischner received $1,995 in industry payments from 2016 to 2025
CMS Open Payments shows 54 general payments to Dr. Leischner from 19 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 93% of the total. Fresenius USA Marketing, Inc. paid the most, $387.
General payments to Dr. Leischner by program year, 2016 to 2025
General payments to Dr. Leischner by kind, 2016 to 2025
- Food and beverage$1,84893%
- Education$1377%
- Travel and lodging$100%
Companies that paid Dr. Leischner 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 Paul Leischner graduated from Loyola University of Chicago, Stritch School of Medicine
Dr. Leischner graduated from Loyola University of Chicago, Stritch School of Medicine in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Paul Leischner'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 Dr. Mark Paul Leischner
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 Paul Leischner's NPI number?
Dr. Mark Paul Leischner's NPI number is 1598708877. It was assigned on June 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Paul Leischner?
Dr. Mark Paul Leischner is a nephrologist in Chicago, Illinois. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Mark Paul Leischner practice?
Dr. Leischner practices at 2608 W Addison St, Chicago, IL 60618. Dr. Leischner's primary practice is Vascular Access Centers of Illinois at North Center LLC in Chicago, Illinois. Dmand AI also links Dr. Leischner to 4 hospitals, 1 dialysis center and 1 group practice or clinic.
What is Dr. Mark Paul Leischner's office phone number?
The practice phone on file for Dr. Leischner is (773) 756-3333.
What is Dr. Mark Paul Leischner's medical license number?
Dr. Leischner holds Illinois license 036110702.
Which hospitals is Dr. Mark Paul Leischner affiliated with?
Dr. Leischner is affiliated with Swedish Hospital. Dmand AI links Dr. Leischner to 4 more hospitals.
What medical group is Dr. Mark Paul Leischner part of?
Dr. Leischner is linked to Associates in Nephrology.
Does Dr. Mark Paul Leischner accept Medicare?
Yes. CMS data shows Dr. Leischner billed Medicare for 10,734 services in 2024, and Dr. Leischner accepts Medicare assignment.
Does Dr. Mark Paul Leischner offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Leischner as offering telehealth services.
How many Medicare patients does Dr. Mark Paul Leischner see?
CMS counts 427 Medicare patients who saw Dr. Leischner in 2024, with an average age of 72.
Show 5 more questionsShow fewer questions
What services does Dr. Mark Paul Leischner bill to Medicare?
In 2024, Dr. Leischner's most billed Medicare services were medicare temporary code (Q9967), injected or infused drug (J3010) and office visit, established patient (99214).
Where did Dr. Mark Paul Leischner go to medical school?
Dr. Leischner graduated from Loyola University of Chicago, Stritch School of Medicine in 2001.
What drugs does Dr. Mark Paul Leischner prescribe most?
In 2024 Medicare Part D data, Dr. Leischner's most prescribed drugs by claims were Calcitriol, Furosemide and Amlodipine Besylate.
Has Dr. Mark Paul Leischner received payments from drug or device companies?
CMS Open Payments shows $1,995 in general payments to Dr. Leischner from 19 companies from 2016 to 2025. The largest total came from Fresenius USA Marketing, Inc.
How long has Dr. Mark Paul Leischner been practicing?
Dr. Leischner graduated from medical school in 2001, 25 years ago.
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