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

Joann El Mahassni, APRN, FNP-BC, FNP-C

Individual provider Family Nurse Practitioner · NPI 1013625185

Joann El Mahassni, APRN, FNP-BC, FNP-C is a Family Nurse Practitioner in Naperville, Illinois. Practices as a sole proprietor and works from 2 locations. Licensed in Florida and Illinois.

Licensed in
FL, IL
In the registry since
2022
Specialties on file
3
What do these letters mean?
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.
FNP-BC — Family Nurse Practitioner, Board Certified
A family nurse practitioner certified by the ANCC.
FNP-C — Family Nurse Practitioner, Certified
A family nurse practitioner certified by the AANP.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1220 Hobson Rd Ste 232
Naperville, IL 60540-8138
Phone: (630) 946-6554
Fax: (877) 458-3984
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (1)

  • 1555 Barrington Rd, Hoffman Estates, IL 60169-1019 — (847) 843-2000

Specialties & licences

Pediatric Cardiology Physician (primary) Taxonomy 2080P0202X · Licence 209026352 (IL)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence APRN11022418 (FL)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence 209026352 (IL)

Record details

NPI number1013625185
Entity typeIndividual (Type 1)
GenderFemale
Credentials APRN , FNP-BC , FNP-C
Sole proprietorYes
NPI enumeratedNovember 8, 2022
Last updated in NPPESOctober 31, 2023
Certification dateJuly 25, 2023

Other providers in Naperville