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

David I. Ruby, MD

Individual provider Emergency Medicine Physician · NPI 1720426414

David I. Ruby, MD practises Emergency Medicine in Hartford, Connecticut. Graduated from State University of New York Downstate Medical Center in 2013, 13 years ago. Practices with Hartford Hospital, a 1,040-clinician group and accepts Medicare assignment. Licensed in Connecticut and Massachusetts.

Years since qualifying
13
Trained at
State University of New York Downstate Medical Center
Licensed in
CT, MA
In the registry since
2013
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

80 Seymour St
Hartford, CT 06102 Not confirmed with CMS for 10 years — call before visiting
Phone: (860) 972-0000
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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 055141 (CT)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 255254 (MA)

Record details

NPI number1720426414
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 5, 2013
Last updated in NPPESMay 27, 2016

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolSTATE UNIVERSITY OF NEW YORK DOWNSTATE MEDICAL CENTER
Graduated 2013 (13 years in practice)
Group practice Hartford Hospital — 1040 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 patients366
Services billed 385 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 Hartford Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1040 clinicians in the practice; 12 are shown here.

Other providers in Hartford