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

Alexander Joseph Whalen, PMHNP-BC

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1265309777

Alexander Joseph Whalen, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner in Oak Brook, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2025
What do these letters mean?
PMHNP-BC — Psychiatric-Mental Health Nurse Practitioner, Board Certified
A board-certified psychiatric nurse practitioner.

See every abbreviation used in this directory →

Practice location Address checks out

1200 Harger Rd Ste 200
Oak Brook, IL 60523-1816
Phone: (630) 556-8914
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 209.033464 (IL)

Record details

NPI number1265309777
Entity typeIndividual (Type 1)
GenderMale
Credentials PMHNP-BC
Sole proprietorYes
NPI enumeratedOctober 20, 2025
Last updated in NPPESOctober 20, 2025
Certification dateOctober 20, 2025

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