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

Maria Melissa O'Brien, MS

Individual provider Professional Counselor · NPI 1124170667

Maria Melissa O'Brien, MS is a Professional Counselor in Waukesha, Wisconsin. Registered with an NPI since 2007.

In the registry since
2007
What do these letters mean?
MS — Master of Science
A graduate science degree.

See every abbreviation used in this directory →

Practice location Address checks out

1501 Airport Rd
Waukesha, WI 53188-2461
Phone: (262) 549-6460
Show map & directions

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

Specialties & licences

Professional Counselor (primary) Taxonomy 101YP2500X

Record details

NPI number1124170667
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS
Sole proprietorNo
NPI enumeratedJanuary 17, 2007
Last updated in NPPESSeptember 7, 2023

Other providers in Waukesha