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

Individual provider Emergency Medicine Physician · NPI 1982898151

Dr. Benjamin Tsai, MD practises Emergency Medicine in Brooklyn, New York. Graduated from University of Michigan Medical School in 2005, 21 years ago. Practices with Em Alliance California APC, a 70-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
21
Trained at
University of Michigan Medical School
Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

965 48th St
Brooklyn, NY 11219-2919 Not confirmed with CMS for 10 years — call before visiting
Phone: (718) 283-7222
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A102869 (CA)

Record details

NPI number1982898151
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 30, 2007
Last updated in NPPESDecember 28, 2015

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 2005 (21 years in practice)
Group practice Em Alliance California Apc — 70 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 patients247
Services billed 328 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Southwest Healthcare Rancho Springs Hospital Hospital · Murrieta, CA

Colleagues at Em Alliance California APC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 70 clinicians in the practice; 12 are shown here.

Other providers in Brooklyn