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

Katherine S O'Neil, FNP-BC

Individual provider Family Nurse Practitioner · NPI 1841479896

Katherine S O'Neil, FNP-BC is a Family Nurse Practitioner in Springfield, Illinois. Licensed in Illinois. Registered with an NPI since 2007.

Licensed in
IL
In the registry since
2007
What do these letters mean?
FNP-BC — Family Nurse Practitioner, Board Certified
A family nurse practitioner certified by the ANCC.

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Practice location Address checks out

2239 E Cook St
Springfield, IL 62703-1944
Phone: (217) 788-2300
Fax: (217) 788-2342
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 209007805 (IL)

Record details

NPI number1841479896
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP-BC
Sole proprietorNo
NPI enumeratedOctober 26, 2007
Last updated in NPPESFebruary 4, 2016

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