Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Healthcare Providers & Facilities in West Seneca, NY

Public healthcare directory of 1,180 individual practitioners and 228 healthcare facilities located in West Seneca, New York.

1,180 Practitioners
228 Facilities
126 Specialties

Medical Specialties in West Seneca

Select a specialty to view practitioner listings, practice locations, and qualifications.

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All Specialties in West Seneca

Specialties with enough public records for a comparison with U.S. figures, besides those named above, plus the 60 largest of 116 more with at least one listed practitioner. Number of practitioners in brackets.

Dietary & Nutritional Service Providers

Eye and Vision Services Providers

Pharmacy Service Providers

Speech, Language and Hearing Service Providers

Featured Healthcare Providers in West Seneca

Practitioner profiles in West Seneca, NY with recent CMS Medicare or Open Payments data.

Corry Wierzbowski , RPA-C

Physician Assistant

Medicare Accepted
1026 Union Rd, West Seneca, NY
Phone: 7167120851
NPI 1154327583

Dr. John Nazzarett , PT DPT

Physical Therapist

Medicare Accepted
2100 Union Rd, West Seneca, NY
Phone: 7166568600
NPI 1780239111

Dr. Geemson Oo , MD

Family Medicine

Medicare Accepted
3775 Seneca Street, West Seneca, NY
Phone: 7167120920
NPI 1841283629

Dr. Tammy Perison , DDS

Dentist - General Practice

425 Main St, West Seneca, NY
Phone: 7166745256
NPI 1811088735

Kristen Kloosterman , NP

Nurse Practitioner - Women's Health

Medicare Accepted
920 Union Rd, West Seneca, NY
Phone: 7162428240
NPI 1952563363

Dr. David Clifford , MD

Family Medicine

Medicare Accepted
256 Center Rd, West Seneca, NY
Phone: 7166774469
NPI 1386604775

Largest Cities in New York

Other New York cities with a full directory, by the number of active practitioners listed in NPPES.

How West Seneca compares with the U.S.

Compared with the U.S. as a whole, West Seneca has more clinicians in Obstetrics & Gynecology (3.7x), Physical Therapists (2.6x) and clinicians in Physician Assistant - Medical (2.5x) per 100,000 residents.

It has fewer clinicians in Nurse Practitioner - Family (53% of the U.S. rate) per 100,000 residents.

West Seneca has 2,605 active clinicians per 100,000 residents, compared with 2,198 for the U.S.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

92% of clinicians in West Seneca listed in the CMS Medicare file (232 of 251) accept Medicare assignment. That is similar to the New York share of 88%.

Only 251 of 1,180 active clinicians in West Seneca appear in the CMS Medicare file, so this share describes that smaller group.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

6% of clinicians in West Seneca listed in the CMS Medicare file (16 of 251) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower than the New York share of 24%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

West Seneca CMS Healthcare & Financial Disclosures

CMS Part D Prescribers (2024), Open Payments (program year 2025), Medicare (PECOS) enrollment and Part B (2024) data for West Seneca, NY

Source: CMS public datasets

Healthcare operations in West Seneca, NY encompass 1,180 active individual practitioners and 228 registered medical facilities across 126 clinical specialties.

According to CMS Medicare Part D analytics for 2024, prescription drug volume in West Seneca accounts for $48.4 Million across 263,162 prescription claims. 364 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.1 Million in payments reported by companies to 157 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.

Medicare Part D Prescriptions (2024) $48.4M 263,162 Prescription Claims Source: data.cms.gov
Open Payments Sunshine Act (2025) $0.1M 157 Recipients Disclosed A reported payment does not necessarily mean the financial relationship is improper. Source: openpaymentsdata.cms.gov
Medicare (PECOS) Enrollment 364 Enrolled Medicare Practitioners Source: data.cms.gov
Medicare Part B Allowed Volume (2024) $6.6M 133,587 Services Performed Source: data.cms.gov

CMS PECOS: Eligible to Order or Refer for Medicare in West Seneca

Part B Lab & Imaging Eligible: 232
Durable Medical Equipment (DME): 248
Home Health Agency (HHA): 209
Source: CMS Order and Referring