Mark Irwin, M.D.
NPI 1508860263 · Urology Physician · Brooklyn, NY
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Irwin, M.D. is a Urology Physician provider in Brooklyn, NY (NPI 1508860263).
Provider details
- NPI number
- 1508860263
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 1685650 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,476 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 297 | $97 |
| Electronic Assessment of Bladder Emptying51741 | 230 | $16 |
| Ultrasound Measurement of Bladder Capacity After Voiding51798 | 230 | $13 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 181 | $136 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 154 | $78 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 128 | $9 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 183 | 62 |
| Finasteride | 62 | 23 |
| Dutasteride | 39 | 15 |
| Ciprofloxacin Hcl | 19 | 13 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 14 | — |
| Silodosin | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-10
- Last updated
- 2017-04-19
Frequently asked questions
- What is Mark Irwin's NPI number?
- Mark Irwin's National Provider Identifier (NPI) is 1508860263, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Irwin's specialty?
- Mark Irwin is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Irwin located?
- Mark Irwin's practice location on file with NPPES is 359 Clinton St, Brooklyn, NY 11231-3701.
- What is Mark Irwin's phone number?
- The practice phone number listed in the NPPES registry for Mark Irwin is (646) 460-1479.
- Does Mark Irwin accept Medicare?
- Mark Irwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Irwin's NPI active?
- Yes — Mark Irwin's NPI (1508860263) is active in the NPPES registry as of the last update on 2017-04-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.