Agnieszka Katarzyna Kowalska, MD
Neurology Physician · Stony Brook, NY
Agnieszka Katarzyna Kowalska, MD is a neurology physician with a practice address in Stony Brook, New York, and NPI 1538320189, issued on Jun 17, 2008. Check the license (New York 248640, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Agnieszka Katarzyna Kowalska
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 248640 NY
Self-reported in NPPES; status is on the state search - Practice location
- Stony Brook University Hospital, Stony Brook, NY 11794
- Phone
- (631) 444-2599
- Enumerated
- Jun 17, 2008
- Record last updated
- Oct 18, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (631) 444-1474
- Medicare enrollment
- Enrolled (PECOS I20090915000698); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 1,778 in New York → Look up another NPI →
Also registered at Stony Brook University Hospital
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Agnieszka Katarzyna Kowalska in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 248640Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average neurology physician in 2024
990 Medicare Part D claims for 146 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.
Most prescribed
- Levetiracetam178 claims
- Gabapentin69 claims
- Lacosamide58 claims
- Pregabalin42 claims
- Oxcarbazepine38 claims
- Donepezil Hcl36 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 98.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $38.01
2 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Neurology Associates OF Stony Brook, University Faculty Practice CorpoStony Brook, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Agnieszka Katarzyna Kowalska among 1,778 neurology physician records in New York
Agnieszka Katarzyna Kowalska, MD is one of 1,778 neurology physician records with a practice address in New York. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 55% of them.
- NPI issued2008 · 55% of these records are older, 38% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2004 · median 2004 among the 1,238 with a school on file
- Record last updated2013 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in New York
There are 1,778 neurology physician records in New York.
All 1,778 in New York → Every provider in Stony Brook → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Lourdes Alicia Bello Espinosa, M.DStony Brook, NY 117941083859490
- Dennis Choi, M.D., PH.D.Stony Brook, NY 117941659544286
- Laura Donarummo, MDStony Brook, NY 117941922265859
- Andrew Goldfine, MDStony Brook, NY 117941104013325
- Nurcan Gursoy, MD, PHDStony Brook, NY 117941326238320
- Marc Halterman, MD, PHDStony Brook, NY 117941952310856
- Mustafa Khan, MDStony Brook, NY 117941861489601
- Yana Krutoshinskaya, M.D.Stony Brook, NY 117941932469533
Common questions
What is Agnieszka Katarzyna Kowalska, MD's NPI number?
Agnieszka Katarzyna Kowalska, MD's National Provider Identifier (NPI) is 1538320189, issued on Jun 17, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Agnieszka Katarzyna Kowalska, MD located?
The NPPES record lists a practice address at Stony Brook University Hospital, Stony Brook, NY, 11794. Phone: (631) 444-2599. Providers update this record themselves, so call before visiting.
How can I verify Agnieszka Katarzyna Kowalska, MD's license?
NPPES lists New York license number 248640, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Agnieszka Katarzyna Kowalska, MD prescribe under Medicare Part D?
In 2024, Agnieszka Katarzyna Kowalska, MD had 990 Medicare Part D claims for 146 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is Agnieszka Katarzyna Kowalska, MD's MIPS final score?
The 2023 MIPS final score is 98.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.