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

Jan Harold De la Cruz Sia, MD

Individual provider Developmental - Behavioral Pediatrics Physician · NPI 1497907695

Jan Harold De la Cruz Sia, MD is a Developmental - Behavioral Pediatrics Physician in New Haven, Connecticut. Practices as a sole proprietor. Licensed in Connecticut and Rhode Island.

Licensed in
CT, RI
In the registry since
2008
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

333 Cedar St
New Haven, CT 06520
Phone: (203) 785-7521
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Developmental - Behavioral Pediatrics Physician (primary) Taxonomy 2080P0006X · Licence 50212 (CT)
Developmental - Behavioral Pediatrics Physician Taxonomy 2080P0006X · Licence MD12665 (RI)

Record details

NPI number1497907695
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 21, 2008
Last updated in NPPESNovember 3, 2011

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