Mark Chazen, M.D.
NPI 1518931989 · Urology Physician · Cheektowaga, NY
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Chazen, M.D. is a Urology Physician provider in Cheektowaga, NY (NPI 1518931989).
Provider details
- NPI number
- 1518931989
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 191098 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,938 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Automated Urinalysis Test81003 | 792 | $2 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 713 | $15 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 465 | $120 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 333 | $86 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 164 | $8 |
| Psa (prostate Specific Antigen) Measurement, Total |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 317 | 140 |
| Finasteride | 125 | 55 |
| Mirabegronbrand: Myrbetriq | 113 | 51 |
| Vibegronbrand: Gemtesa | 86 | 37 |
| Trospium Chloride | 71 | 25 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 45 | 41 |
| Nitrofurantoin Macrocrystalbrand: Nitrofurantoin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$428 across 20 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-14
- Last updated
- 2011-03-01
Frequently asked questions
- What is Mark Chazen's NPI number?
- Mark Chazen's National Provider Identifier (NPI) is 1518931989, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Chazen's specialty?
- Mark Chazen is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Chazen located?
- Mark Chazen's practice location on file with NPPES is 3085 Harlem Road, Cheektowaga, NY 14225-2591.
- What is Mark Chazen's phone number?
- The practice phone number listed in the NPPES registry for Mark Chazen is (716) 844-5000.
- Does Mark Chazen accept Medicare?
- Mark Chazen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Chazen's NPI active?
- Yes — Mark Chazen's NPI (1518931989) is active in the NPPES registry as of the last update on 2011-03-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.