Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mrs. Agnieszka Katarzyna Kowalska, MD

Individual provider Neurology Physician · NPI 1538320189

Mrs. Agnieszka Katarzyna Kowalska, MD practises Neurology in Stony Brook, New York. Qualified in 2004, 22 years ago. Practices with Neurology Associates of Stony Brook, University Faculty Practice Corpo, a 57-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
22
Licensed in
NY
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Partly verified

Some contact details are missing from the federal record.

Stony Brook University Hospital Dept OF Neurology Hsc T12 020
Stony Brook, NY 11794-8121 Not confirmed with CMS for 12 years — call before visiting
Phone: (631) 444-2599
Fax: (631) 444-1474
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurology Physician (primary) Taxonomy 2084N0400X · Licence 248640 (NY)

Record details

NPI number1538320189
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 17, 2008
Last updated in NPPESOctober 18, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEUROLOGY
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Neurology Associates Of Stony Brook, University Faculty Practice Corpo — 57 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients300
Services billed 10,634 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $246 8 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Neurology Associates of Stony Brook, University Faculty Practice Corpo

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 57 clinicians in the practice; 12 are shown here.

Other providers in Stony Brook