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

Matthew Patrick O'Brien, MD

Individual provider Pediatric Cardiology Physician · NPI 1790304137

Matthew Patrick O'Brien, MD is a Pediatric Cardiology Physician in New Haven, Connecticut. Licensed in Connecticut. Registered with an NPI since 2020.

Licensed in
CT
In the registry since
2020
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

20 York St
New Haven, CT 06510-3220
Phone: (203) 688-4242
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Cardiology Physician (primary) Taxonomy 2080P0202X · Licence 75342 (CT)

Record details

NPI number1790304137
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 15, 2020
Last updated in NPPESAugust 7, 2024
Certification dateAugust 7, 2024
Mailing address20 York St, New Haven, CT 06510-3220

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