Dr. Mark B Irwin , MD
Urology • Brooklyn, NY
359 Clinton St
Brooklyn, NY 112313701
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 June 10, 2005; this date does not establish years in practice.
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Published CMS data list 1,476 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:
- 99213 — Established patient outpatient office visit: 297 service units.
- 51741 — Electronic assessment of bladder emptying: 230 service units.
- 51798 — Ultrasound measurement of bladder capacity after voiding: 230 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 all 11 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 329 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – 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 — 183 prescription fills, including refills.
- Finasteride — 62 prescription fills, including refills.
- Dutasteride — 39 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 6 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 65% of clinicians listed under Urology in Brooklyn, NY (2024, 56 clinicians with data). Median for this group: 768. Middle half: 383 to 3,343.
Close to the middle for Medicare Part B services among clinicians listed under Urology in New York (2024, 677 clinicians with data). Median for this group: 1,005. Middle half: 436 to 3,529.
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 1,592 in 2020 to 1,476 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
359 Clinton St
Brooklyn, NY 112313701
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
1982
What Public CMS Data Show
Urology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
188 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 $103,324 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 $75,481 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
875 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
$6,873 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 – by Provider and Drug, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $325.00 in 2020
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2020.
Years since graduation
44 years (graduated 1982)
CMS Doctors and Clinicians data list 1982 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
2005
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?”
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. Irwin 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. Irwin 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 Brooklyn and New York
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 65% of clinicians listed under Urology in Brooklyn, NY (2024, 56 clinicians with data). Median for this group: 768. Middle half: 383 to 3,343.
Close to the middle for clinicians listed under Urology in New York (2024, 677 clinicians with data). Median for this group: 1,005. Middle half: 436 to 3,529.
Medicare-allowed amount
A higher Medicare-allowed amount than 60% of clinicians listed under Urology in Brooklyn, NY (2024, 56 clinicians with data). Median for this group: $82,587. Middle half: $37,456 to $223,250.
Close to the middle for clinicians listed under Urology in New York (2024, 677 clinicians with data). Median for this group: $101,180. Middle half: $38,168 to $249,781.
Paid by Medicare
Close to the middle for clinicians listed under Urology in Brooklyn, NY (2024, 56 clinicians with data). Median for this group: $62,134. Middle half: $27,272 to $172,396.
Close to the middle for clinicians listed under Urology in New York (2024, 677 clinicians with data). Median for this group: $75,481. Middle half: $28,363 to $187,263.
Medicare Part D prescriptions
Fewer Part D prescriptions than 80% of clinicians listed under Urology in Brooklyn, NY (2024, 62 clinicians with data). Median for this group: 976. Middle half: 452 to 1,962.
Fewer Part D prescriptions than 70% of clinicians listed under Urology in New York (2024, 745 clinicians with data). Median for this group: 913. Middle half: 216 to 1,942.
Part D drug cost
A lower Part D drug cost than 85% of clinicians listed under Urology in Brooklyn, NY (2024, 62 clinicians with data). Median for this group: $91,602. Middle half: $18,874 to $282,255.
A lower Part D drug cost than 75% of clinicians listed under Urology in New York (2024, 745 clinicians with data). Median for this group: $79,790. Middle half: $12,830 to $271,371.
81 active clinicians are listed under Urology with a practice address in Brooklyn, NY (1,091 in New York).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Brooklyn
37% of these 81 clinicians have the CMS telehealth indicator.
72.8% of these 81 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 stayed about the same: 1,592 in 2020 and 1,476 in 2024.
- 2020: 1,592
- 2021: 1,613
- 2022: 1,611
- 2023: 1,445
- 2024: 1,476
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Medicare-allowed amount
Medicare-allowed amount stayed about the same: $108,472 in 2020 and $103,324 in 2024.
- 2020: $108,472
- 2021: $129,257
- 2022: $120,986
- 2023: $109,872
- 2024: $103,324
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Paid by Medicare
Paid by Medicare stayed about the same: $81,807 in 2020 and $75,481 in 2024.
- 2020: $81,807
- 2021: $98,475
- 2022: $91,288
- 2023: $84,415
- 2024: $75,481
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Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 331 in 2020 and 329 in 2024.
- 2020: 331
- 2021: 302
- 2022: 352
- 2023: 285
- 2024: 329
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30-day fills
30-day fills increased 13% from 775 in 2020 to 875 in 2024.
- 2020: 775
- 2021: 810
- 2022: 920
- 2023: 803
- 2024: 875
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Part D drug cost
Part D drug cost decreased 40% from $11,477 in 2020 to $6,873 in 2024.
- 2020: $11,477
- 2021: $7,137
- 2022: $7,803
- 2023: $10,620
- 2024: $6,873
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $35.83 in 2019 to $325.00 in 2020.
- 2019: $35.83
- 2020: $325.00
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2020), 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 2020 (payments made January 1 – December 31, 2020): fewer than 11 records totaling $325.00.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Sanofi and Genzyme US Companies |
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program
Cash or cash equivalent
|
JEVTANA | General | $325.00 |
Source: CMS Open Payments, program year 2020, 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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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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297 | 90 | $330.00 | $96.75 |
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51741
Electronic assessment of bladder emptying
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230 | 112 | $55.00 | $15.62 |
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51798
Ultrasound measurement of bladder capacity after voiding
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230 | 112 | $40.00 | $12.65 |
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99443
Telephone medical discussion with physician, 21-30 minutes
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181 | 79 | $460.00 | $135.74 |
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99308
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
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154 | 37 | $245.00 | $77.57 |
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36415
Insertion of needle into vein for collection of blood sample
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128 | 68 | $15.00 | $8.65 |
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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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128 | 75 | $460.00 | $136.99 |
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51702
Simple insertion of temporary bladder tube
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50 | 16 | $100.00 | $26.53 |
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99305
Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes
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37 | 34 | $450.00 | $138.31 |
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76872
Ultrasound scan of pelvic region through rectum
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29 | 26 | $520.00 | $150.46 |
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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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12 | 12 | $610.00 | $176.96 |
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 | 183 | 15,239 | $3,143.67 | 62 |
| Finasteride | Finasteride | 62 | 5,465 | $846.25 | 23 |
| Dutasteride | Dutasteride | 39 | 3,450 | $1,273.83 | 15 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 19 | 182 | $87.78 | 13 |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 14 | 112 | $68.57 | — |
| Silodosin | Silodosin | 12 | 1,080 | $1,453.17 | — |
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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - UROLOGY
I20091201000204
NY
1456490622
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
NPI status registered as active in NPPES database
Registered at 359 CLINTON ST, BROOKLYN, NY 112313701 (Tel: 6464601479)
Registered at 359 CLINTON ST, BROOKLYN, NY 112313701 (Tel: 6464601479)
Recorded as MARK IRWIN, M.D.
Urology (license number reported to NPPES: NY 1685650)
NPI status registered as active in NPPES database
Registered at 339 HICKS ST, BROOKLYN, NY 112015509 (Tel: 5165690696)
Registered at 339 HICKS ST, BROOKLYN, NY 112015509 (Tel: 5165690696)
Recorded as MARK IRWIN, M.D.
Urology (license number reported to NPPES: NY 1685650)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Urology Specialists in Brooklyn
- Dr. Robert Calciano, MD
- Dr. Richard Macchia, MD
- Lauren Fink
- Dr. Stephen Baumgarten, MD
- Dr. Ervin Teper, MD
- Dr. Fatima Husain, MD
Mailing Address
359 Clinton St
Brooklyn, NY 112313701
Phone: 6464601479