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

Dr. Dennis O'Brien, MD

Individual provider Pediatrics Physician · NPI 1376196311

Dr. Dennis O'Brien, MD is a Pediatrics Physician in Ridgefield, Connecticut. Licensed in Illinois. Registered with an NPI since 2019.

Licensed in
IL
In the registry since
2019
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

900 Ridgebury Rd
Ridgefield, CT 06877-1058
Phone: (203) 791-6466
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 036.118812 (IL)

Record details

NPI number1376196311
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 18, 2019
Last updated in NPPESJuly 18, 2019
Mailing address900 Ridgebury Rd, Ridgefield, CT 06877-1058

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