Dr. Ithaar Derweesh , MD
Urology โข Chicago, IL
1725 W Harrison St Ste 970
Chicago, IL 606123828
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 April 27, 2006; this date does not establish years in practice.
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Published CMS data list 661 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99213 โ Established patient outpatient office visit: 198 service units.
- 99214 โ Established patient outpatient office visit: 125 service units.
- 99213 โ Established patient outpatient office visit: 77 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 11 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 123 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Tamsulosin Hcl โ 76 prescription fills, including refills.
- Finasteride โ 47 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among 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 75% 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 โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 550 in 2020 to 661 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
1725 W Harrison St Ste 970
Chicago, IL 606123828
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 2 distinct group names: Mercy Clinic Joplin Llc; Rush University Medical 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
1995
What Public CMS Data Show
Urology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
455 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 โ by Provider, 2024.
Medicare-allowed amount
About $80,572 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 โ by Provider and Service, 2024.
Paid by Medicare
About $62,134 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 โ by Provider and Service, 2024.
30-day fills
303 standardized 30-day fills in 2024
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
$1,931 in 2024
The total cost of these prescriptions in 2024, 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 โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $731.36 across 6 records.
By nature of payment
- Travel and Lodging: $518.10 across 2 records.
- Food and Beverage: $213.26 across 4 records.
Reporting-company totals (3 largest of 4)
- INTUITIVE SURGICAL, INC.: $518.10 across 2 records.
- UROGEN PHARMA, INC.: $130.47 across 1 record.
- Integra LifeSciences Corporation: $59.86 across 2 records.
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
31 years (graduated 1995)
CMS Doctors and Clinicians data list 1995 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
2006
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, โDoes your provider accept Medicare as full payment?โ
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Derweesh 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. Derweesh 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
Close to the middle for 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 75% 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
Close to the middle for 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 70% 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
Close to the middle for 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 70% 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 prescriptions
Close to the middle for clinicians listed under Urology in Chicago, IL (2024, 97 clinicians with data). Median for this group: 95. Middle half: 44 to 460.
Fewer Part D prescriptions than 75% of clinicians listed under Urology in Illinois (2024, 381 clinicians with data). Median for this group: 813. Middle half: 123 to 1,932.
Part D drug cost
Close to the middle for clinicians listed under Urology in Chicago, IL (2024, 97 clinicians with data). Median for this group: $4,095. Middle half: $289 to $55,751.
A lower Part D drug cost than 75% of clinicians listed under Urology in Illinois (2024, 381 clinicians with data). Median for this group: $79,867. Middle half: $8,053 to $301,934.
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 increased 20% from 550 in 2020 to 661 in 2024.
- 2020: 550
- 2021: 611
- 2022: 644
- 2023: 661
- 2024: 661
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Medicare-allowed amount
Medicare-allowed amount decreased 16% from $95,911 in 2020 to $80,572 in 2024.
- 2020: $95,911
- 2021: $100,452
- 2022: $79,476
- 2023: $60,405
- 2024: $80,572
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Paid by Medicare
Paid by Medicare decreased 14% from $72,095 in 2020 to $62,134 in 2024.
- 2020: $72,095
- 2021: $77,338
- 2022: $60,610
- 2023: $44,925
- 2024: $62,134
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 24% from 99 in 2020 to 123 in 2024.
- 2020: 99
- 2021: 107
- 2022: 58
- 2023: 75
- 2024: 123
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30-day fills
30-day fills increased 34% from 226 in 2020 to 303 in 2024.
- 2020: 226
- 2021: 196
- 2022: 148
- 2023: 212
- 2024: 303
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Part D drug cost
Part D drug cost varied from year to year: $1,837 in 2020 and $1,931 in 2024.
- 2020: $1,837
- 2021: $1,671
- 2022: $931
- 2023: $1,695
- 2024: $1,931
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $11.19 in 2021 to $731.36 in 2025.
- 2021: $11.19
- 2022: $18.31
- 2023: $1,279.74
- 2024: $638.05
- 2025: $731.36
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท 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 โ December 31, 2025): fewer than 11 records totaling $731.36.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| INTUITIVE SURGICAL, INC. |
Travel and Lodging
In-kind items and services
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Da Vinci Surgical System | General | $499.10 |
| UROGEN PHARMA, INC. |
Food and Beverage
In-kind items and services
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ZUSDURI | General | $130.47 |
| Integra LifeSciences Corporation |
Food and Beverage
In-kind items and services
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Integra | General | $38.46 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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โ | General | $22.93 |
| Integra LifeSciences Corporation |
Food and Beverage
In-kind items and services
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Integra | General | $21.40 |
| INTUITIVE SURGICAL, INC. |
Travel and Lodging
In-kind items and services
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Da Vinci Surgical System | General | $19.00 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 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 โ by Provider and Service data, 2017โ2024; 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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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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198 | 176 | $344.47 | $67.37 |
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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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125 | 103 | $388.32 | $98.88 |
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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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77 | 69 | $344.47 | $97.37 |
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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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56 | 53 | $388.50 | $136.86 |
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52000
Diagnostic exam of bladder and urethra using an endoscope
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55 | 47 | $849.27 | $80.76 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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40 | 40 | $587.00 | $135.68 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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36 | 36 | $387.94 | $83.35 |
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99443
Telephone medical discussion with physician, 21-30 minutes
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23 | 23 | $339.26 | $99.42 |
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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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20 | 20 | $735.90 | $185.14 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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19 | 19 | $518.00 | $147.56 |
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50543
Partial removal of kidney using an endoscope
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12 | 12 | $6499.75 | $1504.06 |
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 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Tamsulosin Hcl | Tamsulosin Hcl | 76 | 6,120 | $1,093.70 | 28 |
| Finasteride | Finasteride | 47 | 2,944 | $837.07 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-02-16NUCC 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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - UROLOGY
I20250918003274
IL
1759310691
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
Mercy Clinic Joplin Llc
100 Mercy Way, Joplin, MO 648044524
Rush University Medical Group
1725 W Harrison St, Chicago, IL 606123828
Phone: 3125633447
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Urology - Female Pelvic Medicine and Reconstructive Surgery
Doctor of Medicine (M.D.)
Psychiatry & Neurology - Epilepsy
Doctor of Osteopathic Medicine (D.O.)
Internal Medicine - Infectious Disease
Doctor of Medicine (M.D.)
Urology
Urology
Doctor of Medicine (M.D.)
Urology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1725 W HARRISON ST STE 970, CHICAGO, IL 606123828 (Tel: 3125633447)
Registered at 1620 W HARRISON ST, CHICAGO, IL 606123801
Urology (license number reported to NPPES: IL 036.176621)
Registered at 200 W ARBOR DR, SAN DIEGO, CA 921039000 (Tel: 8009268273)
Registered at PO BOX 232410, SAN DIEGO, CA 921932410
Urology (license number reported to NPPES: CA C53383)
NPI status registered as active in NPPES database
Registered at 3855 HEALTH SCIENCES DRIVE, MAIL CODE 0987, LA JOLLA, CA 920930987 (Tel: 8588227874)
Registered at 200 W ARBOR DRIVE, MAIL CODE 8897, SAN DIEGO, CA 921038897 (Tel: 8588226187)
Recorded as ITHAAR DERWEESH, MD
Urology (license number reported to NPPES: TN 40071)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Urology Specialists in Chicago
- Dr. Omer Acar, MD
- Dr. Peter Reisz, MD
- Dr. William Catalona, MD
- Dr. Mark Wille, MD
- Dr. Jerome Hoeksema, MD
- Dr. Roohallah Sharifi, MD
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Directory navigation, in NPI number order.
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Mailing Address
1620 W Harrison St
Chicago, IL 606123801