Dr. Mark Chazen, M.D.
What this data tells you about Dr. Chazen
Dr. Mark Chazen is an urology physician in Cheektowaga, NY, with 20 years of NPI registration. Based on federal Medicare data, Dr. Chazen performed 2,613 Medicare services across 1,808 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chazen received a total of $4,116 from 28 pharmaceutical and/or device companies across 239 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in urology physician. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Chazen is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Automated urinalysis An automated laboratory test performed on a urine sample to analyze its chemical and physical properties. The procedure uses machinery to detect various substances and cells within the urine. |
843 | $2 | $15 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
494 | $83 | $160 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
405 | $59 | $115 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
206 | $8 | $8 |
| Bladder ultrasound after voiding An ultrasound scan performed after urination to measure the amount of urine remaining in the bladder. |
154 | $7 | $85 |
| PSA test (prostate cancer screening) | 152 | $18 | $41 |
| Leuprolide acetate (for depot suspension), 7.5 mg | 88 | $138 | $650 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
61 | $106 | $252 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
42 | $11 | $50 |
| Free PSA test A blood test that measures the amount of unbound prostate-specific antigen in the blood. |
29 | $18 | $40 |
| Complex urodynamic pressure flow study A test that measures the pressure of urine flow in the bladder during voiding to evaluate how well the bladder and urethra are functioning. |
20 | $267 | $500 |
| Non-needle muscle activity measurement of bladder and bowel openings This procedure measures and records the electrical activity of muscles at the bladder and bowel openings without using needles. |
20 | $22 | $500 |
| Simple insertion of temporary bladder tube A procedure to place a temporary tube into the bladder. This allows for the drainage of urine from the bladder. |
17 | $39 | $200 |
| Abdominal device insertion with pressure and urine flow study A procedure involving the placement of a device into the abdomen, accompanied by a study to measure pressure and urine flow rate. |
17 | $127 | $600 |
| Ureteral stone crushing with stent insertion An endoscope is used to break up a stone in the ureter, followed by the placement of a stent to keep the ureter open. |
15 | $314 | $1,000 |
| CT guidance for radiation therapy This procedure uses computed tomography imaging to guide the precise placement of radiation therapy fields. It ensures accurate positioning for targeted treatment delivery. |
14 | $80 | $275 |
| Intensity-modulated radiation therapy delivery Delivery of radiation therapy using narrow beams that are spatially and temporally modulated to target specific areas. This process is performed per treatment session. |
14 | $236 | $820 |
| Cystourethroscopy A diagnostic exam of the bladder and urethra using an endoscope to visually inspect the urinary tract. |
11 | $115 | $400 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
11 | $8 | $30 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
3.1 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Chazen is a clinical cardiology specialist, with above-average Medicare volume (top 29% in NY), with low-engagement industry engagement, with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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