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Dr. John E Tomaszewski , MD

Pathology - Anatomic Pathology • Buffalo, NY

Active NPI 1417993601 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

100 High St
Buffalo, NY 142031126

Call 7168595600 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

100 High St

Buffalo, NY 142031126

Telephone 7168595600
Organization at the Same NPPES Address or Phone
Cardiographic Associates Of High Street Facility NPI 1518936269

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: University At Buffalo Pathologists Inc. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Perelman School Of Med At The University Of Pennsylvania

Graduation Year

1977

Medicare patients

26 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $9,229 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Paid by Medicare

About $7,258 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $108.26 in 2020

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2020.

Guide: How to read an Open Payments record

Years since graduation

49 years (graduated 1977)

CMS Doctors and Clinicians data list 1977 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2006

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Tomaszewski has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Tomaszewski as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Buffalo and New York

Billing and prescribing volume is not a quality rating.

Medicare Part B services

Fewer Medicare Part B services than 65% of clinicians listed under Pathology - Anatomic Pathology in Buffalo, NY (2024, 13 clinicians with data). Median for this group: 693. Middle half: 196 to 1,010.

Fewer Medicare Part B services than 80% of clinicians listed under Pathology - Anatomic Pathology in New York (2024, 187 clinicians with data). Median for this group: 1,195. Middle half: 558 to 2,151.

Medicare-allowed amount

A lower Medicare-allowed amount than 75% of clinicians listed under Pathology - Anatomic Pathology in Buffalo, NY (2024, 13 clinicians with data). Median for this group: $30,135. Middle half: $9,229 to $40,091.

A lower Medicare-allowed amount than 85% of clinicians listed under Pathology - Anatomic Pathology in New York (2024, 187 clinicians with data). Median for this group: $57,512. Middle half: $24,254 to $95,076.

Paid by Medicare

A lower Medicare payment amount than 75% of clinicians listed under Pathology - Anatomic Pathology in Buffalo, NY (2024, 13 clinicians with data). Median for this group: $21,697. Middle half: $7,258 to $31,942.

A lower Medicare payment amount than 85% of clinicians listed under Pathology - Anatomic Pathology in New York (2024, 187 clinicians with data). Median for this group: $44,954. Middle half: $19,324 to $75,434.

19 active clinicians are listed under Pathology - Anatomic Pathology with a practice address in Buffalo, NY (374 in New York).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Buffalo

0% of these 19 clinicians have the CMS telehealth indicator.

84.2% of these 19 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Open Payments (2020), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2020
Disclosure Year:

Program year 2020 (payments made January 1 – December 31, 2020): fewer than 11 records totaling $108.26.

Manufacturer Payment Nature Product Type Amount ($)
Beckman Coulter, Inc.
Food and Beverage
In-kind items and services
— General $108.26

Source: CMS Open Payments, program year 2020, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2019–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
88350 Antibody evaluation, each additional single antibody stain procedure
162 24 $40.00 $25.71
88313 Special stained specimen slides to examine tissue including interpretation and report
83 22 $16.00 $10.67
88341 Special stained specimen slides to examine tissue, each additional procedure
33 13 $35.00 $24.74
88305 Pathology examination of tissue using a microscope, intermediate complexity
27 24 $55.00 $33.07
88346 Antibody evaluation, initial single antibody stain procedure
25 22 $51.00 $31.88
88342 Special stained specimen slides to examine tissue, initial procedure
21 19 $50.00 $30.91
88348 Electron microscopy for diagnosis
15 14 $89.00 $68.19

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Specialties & License Numbers Reported to NPPES

Pathology - Anatomic Pathology Primary Specialty

NUCC Taxonomy Code: 207ZP0101X

License # reported to NPPES PA MD020859

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: New York Office of the Professions.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
0011063450002 (PA)

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - PATHOLOGY

Medicare Enrollment ID

I20120210000301

Enrollment State Jurisdiction

NY

PECOS Control ID

8820009509

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

University At Buffalo Pathologists Inc

1540 Maple Rd, Williamsville, NY 142213647

Phone: 7165683600

University At Buffalo Pathologists Inc

462 Grider St, Buffalo, NY 142153021

Phone: 7168983000

University At Buffalo Pathologists Inc

115 Flint Rd, Williamsville, NY 142213058

Phone: 7166267200

University At Buffalo Pathologists Inc

100 High St, Buffalo, NY 142031126

Phone: 7168595600

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

22 listed
Dr. Tijen Arslan , DNP

Nurse Practitioner

NPI 1043865181

Doctor of Nursing Practice

Taranne Benkleman , FNP

Nurse Practitioner - Family

NPI 1043677172

Family Nurse Practitioner

Gordon Bolles , NP

Nurse Practitioner

NPI 1013538461

Nurse Practitioner

Dr. Claire Burzynski , MD

Emergency Medicine

NPI 1164717252

Doctor of Medicine (M.D.)

Dr. Marilou Ching , MD

Psychiatry & Neurology - Neurology

NPI 1184815839

Doctor of Medicine (M.D.)

Bryson Cook

Student in an Organized Health Care Education/Training Program

NPI 1174197206

Career & Practice History

NPI enumerated June 22, 2006.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1417993601
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 22, 2006
Last Update: October 10, 2011
Sole Proprietor: No

Other Pathology - Anatomic Pathology Specialists in Buffalo

All Pathology - Anatomic Pathology Specialists in Buffalo

Mailing Address

100 High St

Buffalo, NY 142031126

Phone: 7168595600

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.