Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Esther Kwak

Individual provider Emergency Medicine Physician · NPI 1073908083

Esther Kwak practises Emergency Medicine in Brooklyn, New York. Graduated from State University of New York at Stony Brook, School of Medicine in 2015, 11 years ago. Practices with University Hospital of Brooklyn Suny Downstate Health Sciences Univers, a 90-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
11
Trained at
State University of New York at Stony Brook, School of Medicine
Licensed in
NY
In the registry since
2015
Claim this listing Report a problem Suggest an edit

Practice location Address checks out

450 Clarkson Ave
Brooklyn, NY 11203-2012
Phone: (718) 245-3318
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 297284 (NY)

Record details

NPI number1073908083
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedApril 6, 2015
Last updated in NPPESJuly 25, 2019

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolSTATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE
Graduated 2015 (11 years in practice)
Group practice University Hospital Of Brooklyn Suny Downstate Health Sciences Univers — 90 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients91
Services billed 113 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

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 $25 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 University Hospital of Brooklyn Suny Downstate Health Sciences Univers

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 90 clinicians in the practice; 12 are shown here.

Other providers in Brooklyn