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

MS. Margaret A Wallace, FNP

Individual provider Clinical Nurse Specialist · NPI 1689691115

MS. Margaret A Wallace, FNP is a Nurse Practitioner in Creve Coeur, Missouri. Qualified in 1976, 50 years ago. Practices with Washington University, a 2,986-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
50
Licensed in
MO
In the registry since
2006
Specialties on file
2
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

Practice location Address checks out

1044 N Mason Rd Dept Otolaryngology Ste L20
Creve Coeur, MO 63141-6431
Phone: (314) 362-7509
Fax: (314) 362-7522
Show map & directions

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

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 073145 (MO)
Clinical Nurse Specialist Taxonomy 364S00000X · Licence 073145 (MO)

Record details

NPI number1689691115
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedJuly 17, 2006
Last updated in NPPESNovember 17, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 1976 (50 years in practice)
Group practice Washington University — 2986 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare