Daniel Seth Greenstein, MD
Emergency Medicine Physician · New Haven, CT
Daniel Seth Greenstein, MD is an emergency medicine physician with a practice address in New Haven, Connecticut, and NPI 1053761288, issued on Jun 19, 2016. Check the license (Connecticut 78707, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Daniel Seth Greenstein
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 78707 CT
2019017049 MO
Self-reported in NPPES; status is on the state search - Practice location
- 464 Congress Ave, New Haven, CT 06519
- Phone
- (203) 688-4242
- Enumerated
- Jun 19, 2016
- Record last updated
- Jun 27, 2024
- Medicaid ID
- 200061787 MO
- Medicare enrollment
- Enrolled (PECOS I20241003000279); accepts Medicare assignment
- Medical or professional school
- Washington University School Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 846 in Connecticut → Look up another NPI →
Also registered at 464 Congress Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jesse Bohrer-Clancy, M.D.Emergency Medicine Physician1952662967
- Samuel BuckEmergency Medicine Physician1023549722
- Ryan Buckley, MD, MPHEmergency Medicine Physician1508399874
- Jonathan Cardwell, MDEmergency Medicine Physician1780093286
- David Della-Giustina, MDEmergency Medicine Physician1952366437
- Christopher Dill, PA-CPhysician Assistant1386816932
Verify Daniel Seth Greenstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 78707Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average emergency medicine physician in 2024
19 Medicare Part D claims for 14 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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 practice group's MIPS final score for 2023 (Medicare payment program): 89.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Daniel Seth Greenstein among 846 emergency medicine physician records in Connecticut
Daniel Seth Greenstein, MD is one of 846 emergency medicine physician records with a practice address in Connecticut. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 73% of them.
- NPI issued2016 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2016 · median 2011 among the 574 with a school on file
- Record last updated2024 · 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 207P00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
204 emergency medicine physician records list a practice address in New Haven
They are 204 of the 9,793 NPPES records with a practice address in New Haven, and 846 emergency medicine physician records in Connecticut.
All 846 in Connecticut → Every provider in New Haven → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Mary Bogucki, MDNew Haven, CT 065191053392621
- Sean Bush, M.D.New Haven, CT 065191184739872
- Alexandra Carter, MDNew Haven, CT 065191407983190
- David Della-Giustina, MDNew Haven, CT 065191952366437
- Alyssa French, MDNew Haven, CT 065191407918709
- Barbara Kirrane, MDNew Haven, CT 065191710073713
- Gregory Larkin, MDNew Haven, CT 065191205890084
- Michael Lyons, MDNew Haven, CT 065191790712172
Common questions
What is Daniel Seth Greenstein, MD's NPI number?
Daniel Seth Greenstein, MD's National Provider Identifier (NPI) is 1053761288, issued on Jun 19, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Daniel Seth Greenstein, MD located?
The NPPES record lists a practice address at 464 Congress Ave, New Haven, CT, 06519. Phone: (203) 688-4242. Providers update this record themselves, so call before visiting.
How can I verify Daniel Seth Greenstein, MD's license?
NPPES lists Connecticut license number 78707, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Daniel Seth Greenstein, MD prescribe under Medicare Part D?
In 2024, Daniel Seth Greenstein, MD had 19 Medicare Part D claims for 14 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Daniel Seth Greenstein, MD's MIPS final score?
The 2023 MIPS final score is 89.6 of 100, reported for the practice group. 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.