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

Individual provider Adult Health Clinical Nurse Specialist · NPI 1427356336

Mrs. Lissa J Diefendorf, APN is a Certified Clinical Nurse Specialist (Cns) in Peoria, Illinois. Qualified in 2009, 17 years ago. Practices with Proctor Health Systems, a 132-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
17
Licensed in
IL
In the registry since
2011
What do these letters mean?
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

403 W Corrington Ave
Peoria, IL 61604-2803
Phone: (309) 222-5736
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Health Clinical Nurse Specialist (primary) Taxonomy 364SA2200X · Licence 209008169 (IL)

Record details

NPI number1427356336
Entity typeIndividual (Type 1)
GenderFemale
Credentials APN
Sole proprietorYes
NPI enumeratedMarch 2, 2011
Last updated in NPPESMarch 2, 2011

Medicare enrollment

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

Medicare specialtyCERTIFIED CLINICAL NURSE SPECIALIST (CNS)
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Proctor Health Systems — 132 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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