Dr. Mark Aaron Wille , MD
Urology • Chicago, IL
1900 W Polk St Ste 465
Chicago, IL 606123723
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on May 6, 2009; this date does not establish years in practice.
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Published CMS data list 54 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 33 service units.
- 99213 — Established patient outpatient office visit: 21 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Published CMS data list 60 Medicare Part D prescriptions, including refills, in 2019.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2019. Published rows only; this is not a quality measure.
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Published Part D records, 2019:
- Ciprofloxacin Hcl — 21 prescription fills, including refills.
- Finasteride — 20 prescription fills, including refills.
- Tamsulosin Hcl — 19 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2019. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 90% of clinicians listed under Urology in Chicago, IL (2024, 66 clinicians with data). Median for this group: 573. Middle half: 187 to 1,871.
Fewer Medicare Part B services than 95% of clinicians listed under Urology in Illinois (2024, 313 clinicians with data). Median for this group: 1,869. Middle half: 703 to 4,858.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 18 in 2020 to 54 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1900 W Polk St Ste 465
Chicago, IL 606123723
CMS Doctors and Clinicians lists 2 distinct group names: Cook County; Osf Multi-Specialty Group. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
University Of Chicago, Pritzker School Of Medicine
2005
What Public CMS Data Show
Urology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
85 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $4,803 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $3,431 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
117 standardized 30-day fills in 2019
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$302 in 2019
The total cost of these prescriptions in 2019, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2019.
Open Payments general payments, program year 2025
All general payments: $159.76 across 3 records.
By nature of payment
- Food and Beverage: $159.76 across 3 records.
Reporting-company totals
- Boston Scientific Corporation: $141.70 across 2 records.
- Calyxo, Inc.: $18.06 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
21 years (graduated 2005)
CMS Doctors and Clinicians data list 2005 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2009
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Wille has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Wille as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Chicago and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 90% of clinicians listed under Urology in Chicago, IL (2024, 66 clinicians with data). Median for this group: 573. Middle half: 187 to 1,871.
Fewer Medicare Part B services than 95% of clinicians listed under Urology in Illinois (2024, 313 clinicians with data). Median for this group: 1,869. Middle half: 703 to 4,858.
Medicare-allowed amount
A lower Medicare-allowed amount than 90% of clinicians listed under Urology in Chicago, IL (2024, 66 clinicians with data). Median for this group: $62,507. Middle half: $17,593 to $147,521.
A lower Medicare-allowed amount than 95% of clinicians listed under Urology in Illinois (2024, 313 clinicians with data). Median for this group: $150,002. Middle half: $69,734 to $268,150.
Paid by Medicare
A lower Medicare payment amount than 95% of clinicians listed under Urology in Chicago, IL (2024, 66 clinicians with data). Median for this group: $47,277. Middle half: $13,074 to $104,973.
A lower Medicare payment amount than 95% of clinicians listed under Urology in Illinois (2024, 313 clinicians with data). Median for this group: $113,671. Middle half: $51,216 to $199,881.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Wille are from 2019.
193 active clinicians are listed under Urology with a practice address in Chicago, IL (629 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Chicago
29.5% of these 193 clinicians have the CMS telehealth indicator.
40.4% of these 193 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services went from 18 in 2020 to 54 in 2024.
- 2020: 18
- 2021: 15
- 2022: 23
- 2023: 36
- 2024: 54
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Medicare-allowed amount
Medicare-allowed amount increased 233% from $1,443 in 2020 to $4,803 in 2024.
- 2020: $1,443
- 2021: $1,479
- 2022: $1,812
- 2023: $3,162
- 2024: $4,803
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Paid by Medicare
Paid by Medicare increased 227% from $1,048 in 2020 to $3,431 in 2024.
- 2020: $1,048
- 2021: $1,185
- 2022: $1,274
- 2023: $2,213
- 2024: $3,431
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 11 in 2013 to 60 in 2019.
- 2013: 11
- 2017: 27
- 2018: 31
- 2019: 60
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30-day fills
30-day fills increased 333% from 27 in 2013 to 117 in 2019.
- 2013: 27
- 2017: 63
- 2018: 61
- 2019: 117
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Part D drug cost
Part D drug cost went from $322 in 2013 to $302 in 2019.
- 2013: $322
- 2017: $614
- 2018: $239
- 2019: $302
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $18.75 in 2019 to $159.76 in 2025.
- 2019: $18.75
- 2023: $22.57
- 2024: $98.30
- 2025: $159.76
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2019), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $159.76.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
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General - Kidney Stone Disease | General | $130.63 |
| Calyxo, Inc. |
Food and Beverage
In-kind items and services
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CVAC ASPIRATION SYSTEM | General | $18.06 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
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General - Kidney Stone Disease | General | $11.07 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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33 | 27 | $251.12 | $101.08 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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21 | 16 | $171.19 | $69.87 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2019.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 21 | 30 | $22.62 | 19 |
| Finasteride | Finasteride | 20 | 1,380 | $128.21 | — |
| Tamsulosin Hcl | Tamsulosin Hcl | 19 | 1,500 | $150.94 | — |
Source: CMS Part D by Provider and Drug, 2019; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-05-04NUCC Taxonomy Code: 208800000X
A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - UROLOGY
I20120128000015
IL
4981861200
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Osf Multi-Specialty Group
8600 State Route 91, Peoria, IL 616157829
Phone: 3096835050
Cook County
2020 W Harrison St, Chicago, IL 606123741
Phone: 3125724500
Career & Practice History
NPI enumerated May 06, 2009.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Urology Specialists in Chicago
- Dr. Hiten Patel, MD, MPH
- Dr. Adarsh Manjunath, MD
- Dr. Edward Kirsh, MD
- Dr. Brandon Piyevsky, MD
- Dr. Joshua Cabral, MD
- Dr. Nicholas Dean, MD
Mailing Address
1900 W Polk St Ste 465
Chicago, IL 606123723
Phone: 3128640342