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

Mary Margaret Keller, APNP

Individual provider Nurse Practitioner · NPI 1992727259

Mary Margaret Keller, APNP is a Nurse Practitioner in Milwaukee, Wisconsin. Qualified in 1986, 40 years ago. Practices with Milwaukee Nephrologists SC, a 21-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
40
Licensed in
WI
In the registry since
2006
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Practice location Address checks out

2901 W Kinnickinnic River Pkwy Ste 413
Milwaukee, WI 53215-3660
Phone: (414) 383-7744
Fax: (414) 383-8089
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 1968 (WI)

Record details

NPI number1992727259
Entity typeIndividual (Type 1)
GenderFemale
Credentials APNP
Sole proprietorNo
NPI enumeratedJuly 24, 2006
Last updated in NPPESDecember 9, 2019
Certification dateDecember 9, 2019

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 1986 (40 years in practice)
Group practice Milwaukee Nephrologists Sc — 21 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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