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

Dr. William Drier, PHD, LISW

Individual provider Social Worker · NPI 1023400223

Dr. William Drier, PHD, LISW is a Clinical Social Worker in Waterloo, Iowa. Qualified in 1984, 42 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in Iowa and Illinois.

Years since qualifying
42
Licensed in
IA, IL
In the registry since
2015
Specialties on file
2
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.
LISW — Licensed Independent Social Worker
A social worker licensed to practise independently.

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Practice location Address checks out

3356 Kimball Ave
Waterloo, IA 50702-5700
Phone: (319) 214-2159
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Social Worker (primary) Taxonomy 104100000X · Licence 077437 (IA)
Social Worker Taxonomy 104100000X · Licence 150.015.162 (IL)

Record details

NPI number1023400223
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD , LISW
Sole proprietorYes
NPI enumeratedFebruary 24, 2015
Last updated in NPPESNovember 1, 2017
Mailing address1900 Westchester Rd Apt H, Waterloo, IA 50701-4500

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 1984 (42 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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