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

Sean Macmillen, LPC

Individual provider Mental Health Counselor · NPI 1528446259

Sean Macmillen, LPC is a Mental Health Counselor in Williamsport, Pennsylvania. Practices as a sole proprietor. Registered with an NPI since 2015.

In the registry since
2015
What do these letters mean?
LPC — Licensed Professional Counselor
A licensed mental health counsellor.

See every abbreviation used in this directory →

Practice location Address checks out

1100 Grampian Blvd
Williamsport, PA 17701-1909
Phone: (570) 320-7525
Fax: (570) 320-7484
Show map & directions

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

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X

Record details

NPI number1528446259
Entity typeIndividual (Type 1)
GenderMale
Credentials LPC
Sole proprietorYes
NPI enumeratedMay 14, 2015
Last updated in NPPESAugust 15, 2017
Mailing address1201 Grampian Blvd, Williamsport, PA 17701-1900

Other providers in Williamsport