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

Mary K Brethauer, CNM, RN

Individual provider Registered Nurse · NPI 1245270040

Mary K Brethauer, CNM, RN is a Registered Nurse in Milwaukee, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2006.

Licensed in
WI
In the registry since
2006
Specialties on file
2
What do these letters mean?
CNM — Certified Nurse-Midwife
An advanced practice nurse who provides prenatal care and delivers babies.
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Practice location Address checks out

1032 S Cesar E Chavez Dr
Milwaukee, WI 53204-2203
Phone: (414) 672-1353
Fax: (414) 672-4265
Show map & directions

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

Specialties & licences

Advanced Practice Midwife (primary) Taxonomy 367A00000X · Licence 80791-032 (WI)
Registered Nurse Taxonomy 163W00000X · Licence 80791-030 (WI)

Record details

NPI number1245270040
Entity typeIndividual (Type 1)
GenderFemale
Credentials CNM , RN
Sole proprietorNo
NPI enumeratedJune 8, 2006
Last updated in NPPESMarch 7, 2023

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