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

Dr. William Ernest Nordbrock, PHD, ABPP

Individual provider Clinical Neuropsychologist · NPI 1881618965

Dr. William Ernest Nordbrock, PHD, ABPP is a Clinical Psychologist in Crystal Lake, Illinois. Qualified in 1982, 44 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
44
Licensed in
IL
In the registry since
2006
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

755 McArdle Dr Ste E
Crystal Lake, IL 60014-1717
Phone: (815) 355-8589
Fax: (815) 923-7579
Show map & directions

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

Specialties & licences

Clinical Neuropsychologist (primary) Taxonomy 103G00000X · Licence 071-004915 (IL)

Record details

NPI number1881618965
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD , ABPP
Sole proprietorYes
NPI enumeratedJuly 26, 2006
Last updated in NPPESJuly 26, 2026

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1982 (44 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Crystal Lake