NPI registry status
Active
2026 NPPES data Urology Physician NPI 1518931989 M.D.
Verify on CMS → Mark Chazen, M.D.
Urology Physician in Cheektowaga, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 13,350 in Urology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
1K
Medicare Part D claims · 527 beneficiaries · Urology Physician avg: 1K
MIPS score
75.8/100
▼ 7 pts below national avg 83.1 · Above neutral
Industry payments
$428.25
20 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Mark Chazen, M.D. reported a CMS MIPS final score of 75.8/100 - below the 83.1 national average - and filed 1,414 Medicare Part D claims in 2023.
- 75.8/100
- MIPS score · -7 vs avg
- 1K
- Part D claims, 2023
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Mark Chazen, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
76 15th percentile higher than 15% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Mark Chazen, M.D. sits
This provider among urology physician peers
Across the 4,623 urology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Mark Chazen, M.D. writes more Part D claims than 53% of them and scores higher on MIPS quality than 25% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one urology physician peer from a representative sample of 60; the gold marker is Mark Chazen, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Mark Chazen, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Mark Chazen, M.D.?
Below national averagePrimary specialty
Urology Physician
Medicare Part D claims
1,414 10% vs specialty avg
MIPS final score
75.8/100 7.3 pts vs avg
Specialty distribution in New York
How Urology Physician compares to other specialties among New York providers
Medicare quality performance, MIPS
Mark Chazen, M.D.'s 2023 MIPS final score plotted against the Urology Physician national average
- MIPS Final Score
- 75.8/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Urology Physician) - 75.8/100 vs national avg 83.1
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Mark Chazen, M.D. appears in the CMS NPPES registry as a Urology Physician provider holding M.D. credentials at 3085 HARLEM ROAD, Cheektowaga, NY, 14225, with a listed phone of (716) 844-5000. NPI 1518931989 was issued on 02/14/2006.
Medicare Part D records for calendar year 2023 show 1,414 prescription claims written by this provider, covering 527 Medicare beneficiaries and totaling roughly $254K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 75.8/100 for the 2023 performance year (Quality 59.7, Cost 73.5), compared with the national average of 83.1.
Urology Physician is a mid-sized specialty nationwide, with 13,350 enrolled providers across 54 states and an average of 1,280 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1518931989 |
|---|---|
| Specialty | Urology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 02/14/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75.7628
Final Score
Avg: 83.1
59.66
Quality
73.4563
Cost
77
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Mark Chazen, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Erie County Medical Center Corporation
Buffalo, NY
Great Lakes Physician PC
Cheektowaga, NY
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Mark Chazen, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$428
Largest payer
ABBVIE INC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - New York NYSBPMC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~100K New York medical licensees in 2023 - they are NOT specific to Mark Chazen, M.D.. To verify Mark Chazen, M.D.'s current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,414
Total Claims
$254K
Total Drug Cost
527
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,548
- Total Day Supply
- 70,838
- Generic Drug Cost
- $38K
- Antibiotic Claims
- 255
Patient Demographics
- Average Patient Age
- 74.2 years
- Avg HCC Risk Score
- 1.49
- Gender Split
- 30% female / 70% male
- Age Distribution
- <65: 45, 65-74: 224, 75-84: 195, 85+: 63
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mark Chazen, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Tamsulosin Hcl
Tamsulosin Hcl
447 claims
- Myrbetriq 155
Myrbetriq
155 claims
- Finasteride 132
Finasteride
132 claims
- Gemtesa 58
Gemtesa
58 claims
- Nitrofurantoin Mon… 56
Nitrofurantoin Mono-Macro
56 claims
- Sulfamethoxazole-T… 55
Sulfamethoxazole-Trimethoprim
55 claims
- Silodosin 50
Silodosin
50 claims
- Dutasteride 48
Dutasteride
48 claims
| Drug | Claims |
|---|---|
| Tamsulosin Hcl | 447 |
| Myrbetriq Mirabegron | 155 |
| Finasteride | 132 |
| Gemtesa Vibegron | 58 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 56 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 55 |
| Silodosin | 50 |
| Dutasteride | 48 |
| Trospium Chloride | 45 |
| Ciprofloxacin Hcl | 35 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Urology Physician Overview
How Mark Chazen, M.D. fits within the Urology Physician landscape nationally.
13,350
Urology Physician Providers in US
54
States with Urology Physician
1,280
Avg Claims per Provider
Mark Chazen, M.D.'s 1,414 claims are above the specialty average of 1,280.
Nearby Urology Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Chazen.
Dr. Paul Aaronson
MD
Forest Hills, NY
Dr. Samuel Abourbih
MD,CM
Middletown, NY
Dr. Henry Abrams
M.D.
Dix Hills, NY
Dr. Nagui Adeeb
M.D.
Medina, NY
Dr. Howard Adler
M.D.
East Setauket, NY
Compare Urology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the New York medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Urology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Mark Chazen, M.D.'s specialty? ▼
Mark Chazen, M.D. specializes in Urology Physician and practices in Cheektowaga, New York. Credentials: M.D..
How much does Mark Chazen, M.D. prescribe under Medicare Part D? ▼
In 2023, Mark Chazen, M.D. wrote 1,414 Medicare Part D claims totaling $254K in drug costs for 527 beneficiaries.
What is Mark Chazen, M.D.'s Medicare quality score? ▼
Mark Chazen, M.D. has a CMS MIPS Final Score of 75.8/100 (Quality: 59.7, Cost: 73.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mark Chazen, M.D. located? ▼
Mark Chazen, M.D. is located at 3085 HARLEM ROAD, Cheektowaga, NY, 14225. Phone: (716) 844-5000.
What is Mark Chazen, M.D.'s NPI number? ▼
Mark Chazen, M.D.'s National Provider Identifier (NPI) is 1518931989, issued on 02/14/2006.
How many Urology Physician providers are there in the US? ▼
There are 13,350 Urology Physician providers across 54 states in the US. The average Urology Physician provider writes 1,280 Medicare Part D claims per year.
What drugs does Mark Chazen, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Mark Chazen, M.D.'s most frequently prescribed drugs include Tamsulosin Hcl, Myrbetriq, Finasteride. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Chazen, M.D. accept Medicare? ▼
Mark Chazen, M.D. appears in CMS Medicare data with 1,414 Part D claims and 527 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Chazen, M.D.'s credentials? ▼
Mark Chazen, M.D.'s NPI is 1518931989 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.