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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

LES ZAKRZEWSKI MD
NPI 1467431577
Internal Medicine in West Seneca, NY

Active since January 17, 2006PECOS EnrolledCLIA 33D0709013 · Microscopy
721 CENTER RD, WEST SENECA, NY 14224(716) 677-4070(716) 677-4095 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Les Zakrzewski Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

LES ZAKRZEWSKI MD (NPI 1467431577) is an individual internal medicine provider in West Seneca, New York, licensed in New York (154880-1) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, holds a CLIA Microscopy certificate valid through August 31, 2026, and is affiliated with Sisters Of Charity Hospital.

NPPES Registry Identity

NPI1467431577
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameLES ZAKRZEWSKICredential: MD
Location Address721 CENTER RDWest Seneca, NY 14224-2181
Mailing Address721 Center RdWest Seneca, NY 14224-2181 · (716) 677-4070 · Fax (716) 677-4095
Phone(716) 677-4070
Fax(716) 677-4095
Sole ProprietorNo
Medical School CMSOther
Enumeration DateJanuary 17, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1467431577 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 154880-1
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
721 CENTER RD, West Seneca, NY 14224
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Other Identifiers 1

Medicaid00806973NY

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Les Zakrzewski Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8426009929
PECOS Enrollment IDI20050202000198
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 33D0709013

Les Zakrzewski MD · West Seneca, NY
Active · expires Aug 31, 2026
CLIA Number33D0709013
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2024
Certificate Expiration DateAugust 31, 2026
Laboratory DirectorLes A. Zakrzewski
Laboratory Phone(716) 677-4070
Laboratory LocationLes Zakrzewski MD721 Center Road, West Seneca, NY 14224
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
143 services47 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
52 services34 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
35 services35 patients
Influenza vaccine, inactivated 90653
The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.
17 services17 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
15 services12 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
14 services14 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Sisters Of Charity Hospital

Acute Care Hospitals · Buffalo, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330078
Location2157 Main StreetBuffalo, NY 14214 · Erie County
Emergency services Birthing friendly

Mercy Hospital Of Buffalo

Acute Care Hospitals · Buffalo, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330279
Location565 Abbott RoadBuffalo, NY 14220 · Erie County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 14224 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.40 typical visit price
range $54.87 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$97.08 typical visit price
range $17.54 – $136.14
Typical copayment $24.27 (range $4.38 – $34.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier11 claims11 services$66.35 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LES ZAKRZEWSKI MD
Internal Medicine
721 CENTER RD
WEST SENECA, NY 14224
Erie County (716) 677-4070

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Les Zakrzewski's NPI number?

The NPI number for Les Zakrzewski is 1467431577. It was assigned to this individual provider in the NPPES registry on January 17, 2006.

Where is Les Zakrzewski located?

Les Zakrzewski practices at 721 Center Rd, West Seneca, NY 14224. The listed phone number is (716) 677-4070.

What is Les Zakrzewski's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Les Zakrzewski enrolled in Medicare?

Yes. Les Zakrzewski is registered in the Medicare PECOS enrollment system.

Does Les Zakrzewski hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 33D0709013) is associated with this NPI, valid through August 31, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

Is Les Zakrzewski affiliated with any hospitals?

According to CMS data, Les Zakrzewski is affiliated with Sisters Of Charity Hospital and Mercy Hospital Of Buffalo.

When was this NPI record last updated?

The NPPES record for Les Zakrzewski was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.