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

Marissa Jane Casillo, FNP

Individual provider Family Nurse Practitioner · NPI 1972251817

Marissa Jane Casillo, FNP is a Family Nurse Practitioner in Foxboro, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2022.

Licensed in
MA
In the registry since
2022
Specialties on file
2
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

18 Washington St
Foxboro, MA 02035-1072
Phone: (781) 551-5812
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence RN2273512 (MA)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence F03210086 (MA)

Record details

NPI number1972251817
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedMarch 10, 2022
Last updated in NPPESJune 12, 2026
Certification dateJune 12, 2026
Mailing address18 Washington St, Foxboro, MA 02035-1072

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