Dr. Marc Shi-Jey Chuang , MD
Urology β’ Chicago, IL
5841 S Maryland Ave, Mc 6038
Chicago, IL 606371443
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 July 9, 2006; this date does not establish years in practice.
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Published CMS data list 388 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β 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 β 112 prescription fills, including refills.
- Finasteride β 51 prescription fills, including refills.
- Ciprofloxacin Hcl β 43 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 11 records in the table Β· Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 70% of clinicians listed under Urology in Chicago, IL (2024, 95 clinicians with data). Median for this group: 99. Middle half: 46 to 468.
Fewer Part D prescriptions than 60% of clinicians listed under Urology in Illinois (2024, 380 clinicians with data). Median for this group: 812. Middle half: 123 to 1,910.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 790 in 2020 to 388 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2020β2024.
Practice Location & Contact Primary Location
5841 S Maryland Ave
Mc 6038
Chicago, IL 606371443
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 1 group name: Southern California Permanente Medical Group. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
2000
What Public CMS Data Show
Urology: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
861 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
$15,456 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 β by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $347.31 across 4 records.
By nature of payment
- Food and Beverage: $347.31 across 4 records.
Reporting-company totals
- Boston Scientific Corporation: $166.67 across 2 records.
- Photocure Inc: $130.64 across 1 record.
- Myriad Genetic Laboratories, Inc.: $50.00 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
26 years (graduated 2000)
CMS Doctors and Clinicians data list 2000 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, CMS release of October 2, 2026.
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, CMS release of October 2, 2026; Medicare.gov, βDoes your provider accept Medicare as full payment?β
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, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Chuang 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. Chuang 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 D prescriptions
More Part D prescriptions than 70% of clinicians listed under Urology in Chicago, IL (2024, 95 clinicians with data). Median for this group: 99. Middle half: 46 to 468.
Fewer Part D prescriptions than 60% of clinicians listed under Urology in Illinois (2024, 380 clinicians with data). Median for this group: 812. Middle half: 123 to 1,910.
Part D drug cost
Close to the middle for clinicians listed under Urology in Chicago, IL (2024, 95 clinicians with data). Median for this group: $7,098. Middle half: $347 to $58,294.
A lower Part D drug cost than 65% of clinicians listed under Urology in Illinois (2024, 380 clinicians with data). Median for this group: $79,863. Middle half: $7,672 to $302,869.
193 active clinicians are listed under Urology with a practice address in Chicago, IL (628 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.
42% 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 D prescriptions
Medicare Part D prescriptions decreased 51% from 790 in 2020 to 388 in 2024.
- 2020: 790
- 2021: 581
- 2022: 496
- 2023: 406
- 2024: 388
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30-day fills
30-day fills decreased 58% from 2,059 in 2020 to 861 in 2024.
- 2020: 2,059
- 2021: 1,584
- 2022: 1,188
- 2023: 968
- 2024: 861
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Part D drug cost
Part D drug cost decreased 51% from $31,654 in 2020 to $15,456 in 2024.
- 2020: $31,654
- 2021: $16,324
- 2022: $22,168
- 2023: $22,146
- 2024: $15,456
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $123.57 in 2021 to $347.31 in 2025.
- 2021: $123.57
- 2022: $73.18
- 2023: $126.88
- 2024: $260.60
- 2025: $347.31
Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· 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 β December 31, 2025): fewer than 11 records totaling $347.31.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
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General - Kidney Stone Disease | General | $138.89 |
| Photocure Inc |
Food and Beverage
In-kind items and services
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CYSVIEW | General | $130.64 |
| Myriad Genetic Laboratories, Inc. |
Food and Beverage
In-kind items and services
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PROLARIS | General | $50.00 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
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General - Kidney Stone Disease | General | $27.78 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
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 | 112 | 11,130 | $2,220.21 | 50 |
| Finasteride | Finasteride | 51 | 5,100 | $798.69 | 20 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 43 | 211 | $324.76 | 36 |
| Tadalafil | Tadalafil | 42 | 3,510 | $894.83 | 18 |
| Cephalexin | Cephalexin | 35 | 206 | $341.98 | 23 |
| Trospium Chloride | Trospium Chloride | 26 | 1,097 | $771.39 | 11 |
| Oxycodone Hcl | Oxycodone Hcl | 22 | 102 | $166.05 | 21 |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 21 | 181 | $141.24 | 14 |
| Myrbetriq | Mirabegron | 13 | 570 | $8,826.68 | β |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 12 | 127 | $138.20 | β |
| Fosfomycin Tromethamine | Fosfomycin Tromethamine | 11 | 59 | $832.42 | β |
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
NUCC 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
I20080602000572
CA
9133126394
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, CMS release of October 2, 2026
Southern California Permanente Medical Group
6041 Cadillac Ave, Los Angeles, CA 900341702
Phone: 8009548000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Internal Medicine - Sleep Medicine
Doctor of Medicine (M.D.)
Internal Medicine - Endocrinology, Diabetes & Metabolism
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Radiology - Diagnostic Radiology
Internal Medicine
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 5841 S MARYLAND AVE, MC 6038, CHICAGO, IL 606371443 (Tel: 7737026105)
Registered at 4922 S CORNELL AVE, UNIT J, CHICAGO, IL 606153079 (Tel: 3128020221)
Urology (license number reported to NPPES: IL 036-113418)
NPI status registered as active in NPPES database
Registered at 5841 S MARYLAND AVE, MC 6038, CHICAGO, IL 606371447 (Tel: 7737026105)
Registered at 4922 S CORNELL AVE, UNIT J, CHICAGO, IL 606153014 (Tel: 3128020221)
Recorded as MARC CHUANG, M.D.
Urology
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Urology Specialists in Chicago
All Urology Specialists in ChicagoMailing Address
4922 S Cornell Ave, Unit J
Chicago, IL 606153079
Phone: 3128020221