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

Dr. Daniel Seth Greenstein, MD

Individual provider Emergency Medicine Physician · NPI 1053761288

Dr. Daniel Seth Greenstein, MD practises Emergency Medicine in New Haven, Connecticut. Graduated from Washington University School of Medicine in 2016, 10 years ago. Practices with Yale University, a 2,618-clinician group and accepts Medicare assignment. Licensed in Connecticut and Missouri.

Years since qualifying
10
Trained at
Washington University School of Medicine
Licensed in
CT, MO
In the registry since
2016
Specialties on file
2
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

464 Congress Ave
New Haven, CT 06519-1361
Phone: (203) 688-4242
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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 78707 (CT)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 2019017049 (MO)

Record details

NPI number1053761288
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 19, 2016
Last updated in NPPESJune 27, 2024
Certification dateJune 27, 2024

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolWASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice Yale University — 2618 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 patients124
Services billed 142 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Yale University

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2618 clinicians in the practice; 12 are shown here.

Other providers in New Haven