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

Mrs. Darleen N/A Diaz, MSN, RN, APN, FNP-PC

Individual provider Family Nurse Practitioner · NPI 1134593635

Mrs. Darleen N/A Diaz, MSN, RN, APN, FNP-PC is a Family Nurse Practitioner in Chicago, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2015
Specialties on file
2
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.
APN — Advanced Practice Nurse
The umbrella title some states use for nurse practitioners and other advanced practice nurses.

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Practice location Address checks out

225 E Chicago Ave
Chicago, IL 60611-2991
Phone: (312) 227-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 277.000784 (IL)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence 209.013407 (IL)

Record details

NPI number1134593635
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , RN , APN , FNP-PC
Sole proprietorYes
NPI enumeratedNovember 20, 2015
Last updated in NPPESJanuary 29, 2021
Certification dateJanuary 29, 2021

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