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

Nathalie K Diethrich, PMHNP

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1104374727

Nathalie K Diethrich, PMHNP is a Nurse Practitioner in Decatur, Illinois. Qualified in 2006, 20 years ago. Practices with Heritage Behavioral Health Center, Inc, a 19-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
20
Licensed in
IL
In the registry since
2016
Specialties on file
3
What do these letters mean?
PMHNP — Psychiatric-Mental Health Nurse Practitioner
A nurse practitioner specialising in mental health, able to prescribe psychiatric medication.

See every abbreviation used in this directory →

Practice location Address checks out

151 N Main St
Decatur, IL 62523-1206
Phone: (217) 362-6262
Fax: (217) 362-6290
Show map & directions

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

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence 277001744 (IL)
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X · Licence 377001689 (IL)
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X · Licence 209.014716 (IL)

Record details

NPI number1104374727
Entity typeIndividual (Type 1)
GenderFemale
Credentials PMHNP
Sole proprietorNo
NPI enumeratedSeptember 12, 2016
Last updated in NPPESSeptember 30, 2025
Certification dateSeptember 30, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2006 (20 years in practice)
Group practice Heritage Behavioral Health Center, Inc. — 19 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Decatur