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

Mackenzie Marie St John, MSW

Individual provider Professional Counselor · NPI 1134959554

Mackenzie Marie St John, MSW is a Professional Counselor in Littlestown, Pennsylvania. Practices as a sole proprietor. Registered with an NPI since 2024.

In the registry since
2024
Specialties on file
3
What do these letters mean?
MSW — Master of Social Work
The graduate degree in social work.

See every abbreviation used in this directory →

Practice location Address checks out

815 Orphanage Rd
Littlestown, PA 17340-9329
Phone: (717) 359-7148
Fax: (717) 359-2600
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X
Professional Counselor Taxonomy 101YP2500X
Case Manager/Care Coordinator Taxonomy 171M00000X

Record details

NPI number1134959554
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSW
Sole proprietorYes
NPI enumeratedAugust 2, 2024
Last updated in NPPESAugust 2, 2024

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