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

Ronald Jasiewicz

Individual provider Pediatric Anesthesiology Physician · NPI 1114978954

Ronald Jasiewicz practises Anesthesiology in Stony Brook, New York. Qualified in 1992, 34 years ago. Practices with Stony Brook Anaesthesiology University Faculty Practice Corporation, a 87-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
34
Licensed in
NY
In the registry since
2006
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Practice location Address checks out

Hsc L4-060 Stony Brook University
Stony Brook, NY 11790-8480 Not confirmed with CMS for 19 years — call before visiting
Phone: (631) 444-2975
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Anesthesiology Physician (primary) Taxonomy 207LP3000X · Licence 194400-1 (NY)

Record details

NPI number1114978954
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMay 15, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 1992 (34 years in practice)
Group practice Stony Brook Anaesthesiology University Faculty Practice Corporation — 87 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
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 patients138
Services billed 138 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 $19 1 payment · 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.

Colleagues at Stony Brook Anaesthesiology University Faculty Practice Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 87 clinicians in the practice; 12 are shown here.

Other providers in Stony Brook