Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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John F Halliwell, PHD, CCC-SLP

Individual provider Speech-Language Pathologist · NPI 1942569595

John F Halliwell, PHD, CCC-SLP is a Speech-Language Pathologist in Oak Park, Illinois. Registered with an NPI since 2012.

In the registry since
2012
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.
CCC-SLP — Certificate of Clinical Competence in Speech-Language Pathology
A speech-language pathologist certified by ASHA.

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Practice location Address checks out

3 Erie Ct
Oak Park, IL 60302-2519
Phone: (708) 383-6200
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Speech-Language Pathologist (primary) Taxonomy 235Z00000X

Record details

NPI number1942569595
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD , CCC-SLP
Sole proprietorNo
NPI enumeratedMay 15, 2012
Last updated in NPPESAugust 5, 2013

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