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

Diane Stierwalt, CNP

Individual provider Nurse Practitioner · NPI 1194722645

Diane Stierwalt, CNP is a Nurse Practitioner in Saint Louis, Missouri. Qualified in 2003, 23 years ago. Practices with Mercy Clinic Cardiovascular and Thoracic Surgery LLC, a 23-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
23
Licensed in
IL
In the registry since
2005
What do these letters mean?
CNP — Certified Nurse Practitioner
A certified nurse practitioner.

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Practice location Address checks out

10012 Kennerly Rd Ste 403
Saint Louis, MO 63128-2197
Phone: (314) 880-6676
Fax: (314) 842-4372
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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 041321448 (IL)

Record details

NPI number1194722645
Entity typeIndividual (Type 1)
GenderFemale
Credentials CNP
Sole proprietorNo
NPI enumeratedJune 30, 2005
Last updated in NPPESApril 7, 2016

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Mercy Clinic Cardiovascular And Thoracic Surgery Llc — 23 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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