Dr. Mark B. Irwin, MD
- Medicare services, 2024
- 1,476
- Medicare patients, 2024
- 188
- Part D claims, 2024
- 376
- Hospital affiliations
- 1
- Industry payments
- $1,111
- Practice address
- 4802 Tenth Avenue, Brooklyn, NY 11219
- Practice phone
- Call (718) 283-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Irwin's professional email, personal email and mobile number
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Dr. Mark B. Irwin is a urologist in Brooklyn, New York
Dr. Irwin practices at Maimonides Medical Center in Brooklyn, New York, part of Maimonides Medical Center.
Dr. Irwin's NPI, 1508860263, was assigned on June 10, 2005. Dr. Irwin holds New York license 1685650.
- NPI
- 1508860263NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456490622
- NPI enumeration date
- June 10, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (718) 283-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark B. Irwin practices at Maimonides Medical Center in Brooklyn, New York
Dr. Irwin's primary practice is Maimonides Medical Center, at 4802 Tenth Avenue, Brooklyn, NY 11219 in Kings County. The practice phone is (718) 283-6000.
- Maimonides Medical Center4802 Tenth Avenue, Brooklyn, NY 11219 · Kings CountyPhone(718) 283-6000
Source: Dmand AI Affiliation Data
Dr. Mark B. Irwin is affiliated with 1 site of care and 1 medical group
Dr. Irwin's primary practice is Maimonides Medical Center in Brooklyn, New York, part of Maimonides Medical Center. Dmand AI also links Dr. Irwin to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark B. Irwin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Irwin practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Maimonides Medical Center | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Maimonides Medical Center and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark B. Irwin is one of 919 urologists in New York
Urology is Dr. Irwin's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Irwin is licensed in New York.
Specialties and state licenses
- Urology, New YorkPrimary
Urologists near Dr. Irwin
Counts of urologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mark B. Irwin billed Medicare for 1,476 services in 2024
CMS data shows 1,476 Medicare services from Dr. Irwin across 11 procedure codes in 2024, for 188 Medicare patients. Medicare paid $75,482 for them.
Dr. Irwin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7522024: 8098%
- Surgery
- 2023: 6612024: 6383%
- Imaging
- 2023: 322024: 299%
Where Dr. Irwin's Medicare services took place, 2024
- In an office1,23584%
- In a facility24116%
Dr. Irwin compared with the New York median for urologists, 2024
- Dr. Irwin
- New York median
- Medicare services
- 1,476vs 84974% above
- Medicare patients
- 188vs 36048% below
- Part D claims
- 329vs 58944% below
Medians across 885 urologists in New York with Dmand AI profiles that report each measure.
Dr. Irwin's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Irwin and other urologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark B. Irwin treated 188 Medicare patients in 2024, average age 76
CMS counts 188 Medicare patients who saw Dr. Irwin in 2024. The largest group is 65 to 74, with 67 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 1.43, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Irwin's median patient age at 53, with 13% women.
Dr. Irwin's Medicare patients by age, 2024
Dr. Irwin's Medicare patients by sex, 2024
- Women3519%
- Men15381%
Chronic conditions among Dr. Irwin's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Diabetes51%
- Ischemic heart disease37%
- Chronic kidney disease30%
- Mood disorders29%
- Depression23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Irwin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women13%
- Men86%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark B. Irwin wrote 376 Medicare Part D claims in 2024
In 2024, Dr. Irwin wrote 376 Medicare Part D claims for 92 patients. 97% of them were for generic drugs. CMS names the drug for 329 of them, across 6 drugs with 11 or more claims each, at $6,873 in total drug cost. In 2023, CMS named 285 claims across 5 drugs.
Dr. Irwin's Part D claims by kind of drug, 2024
- Generic365 claims97%
- Brand-name11 claims3%
Dr. Irwin's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Irwin's Part D claims, 2024
- Antibiotics12%44 of 376 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2852024: 32915%
Drugs named by CMS: 6 in 2024, 5 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Mark B. Irwin offers telehealth to Medicare patients
Dr. Irwin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Irwin as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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Dr. Mark B. Irwin received $1,111 in industry payments from 2016 to 2020
CMS Open Payments shows 9 general payments to Dr. Irwin from 6 drug and device companies from 2016 to 2020. Speaker and faculty fees make up the largest share, 83% of the total. Sanofi and Genzyme US Companies paid the most, $925.
General payments to Dr. Irwin by program year, 2016 to 2020
General payments to Dr. Irwin by kind, 2016 to 2020
- Speaker and faculty fees$92583%
- Food and beverage$18617%
Companies that paid Dr. Irwin the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark B. Irwin's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mark B. Irwin
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mark B. Irwin's NPI number?
Dr. Mark B. Irwin's NPI number is 1508860263. It was assigned on June 10, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark B. Irwin?
Dr. Mark B. Irwin is a urologist in Brooklyn, New York. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. Mark B. Irwin practice?
Dr. Irwin practices at 4802 Tenth Avenue, Brooklyn, NY 11219. Dr. Irwin's primary practice is Maimonides Medical Center in Brooklyn, New York, part of Maimonides Medical Center. Dmand AI also links Dr. Irwin to 1 medical group.
What is Dr. Mark B. Irwin's office phone number?
The practice phone on file for Dr. Irwin is (718) 283-6000.
What is Dr. Mark B. Irwin's medical license number?
Dr. Irwin holds New York license 1685650.
Which hospitals is Dr. Mark B. Irwin affiliated with?
Dr. Irwin practices at Maimonides Medical Center in Brooklyn, New York.
Does Dr. Mark B. Irwin accept Medicare?
Yes. CMS data shows Dr. Irwin billed Medicare for 1,476 services in 2024, and Dr. Irwin accepts Medicare assignment.
Does Dr. Mark B. Irwin offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Irwin as offering telehealth services.
How many Medicare patients does Dr. Mark B. Irwin see?
CMS counts 188 Medicare patients who saw Dr. Irwin in 2024, with an average age of 76.
What services does Dr. Mark B. Irwin bill to Medicare?
In 2024, Dr. Irwin's most billed Medicare services were office visit, established patient (99213), surgery: urinary system (51741) and surgery: urinary system (51798).
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What drugs does Dr. Mark B. Irwin prescribe most?
In 2024 Medicare Part D data, Dr. Irwin's most prescribed drugs by claims were Tamsulosin HCl, Finasteride and Dutasteride.
Has Dr. Mark B. Irwin received payments from drug or device companies?
CMS Open Payments shows $1,111 in general payments to Dr. Irwin from 6 companies from 2016 to 2020. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Mark B. Irwin been practicing?
Dr. Irwin graduated from medical school in 1982, 44 years ago.
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