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

Individual provider Social Worker · NPI 1477220515

Chelsea Macmillan, LMSW is a Social Worker in Mastic, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2021
What do these letters mean?
LMSW — Licensed Master Social Worker
A master's-level social worker, usually practising under supervision.

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Practice location Address checks out

53 Carlin Dr
Mastic, NY 11950-1103
Phone: (631) 559-4493
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Social Worker (primary) Taxonomy 104100000X (NY)

Record details

NPI number1477220515
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMSW
Sole proprietorYes
NPI enumeratedAugust 26, 2021
Last updated in NPPESAugust 26, 2021
Certification dateAugust 26, 2021

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