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

John Ewing Harris, PHD

Individual provider Psychologist · NPI 1558359828

John Ewing Harris, PHD is a Clinical Psychologist in Springfield, Illinois. Graduated from Texas Tech University Health Science Center School of Medicine in 1975, 51 years ago. Practices with Psychological Services of Central Illinois PC, a 6-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
51
Trained at
Texas Tech University Health Science Center School of Medicine
Licensed in
IL
In the registry since
2005
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

2921 Greenbriar Dr Ste B1
Springfield, IL 62704-6440
Phone: (217) 546-3118
Fax: (217) 546-3184
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 071005273 (IL)

Record details

NPI number1558359828
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedOctober 11, 2005
Last updated in NPPESFebruary 14, 2021
Certification dateFebruary 14, 2021
Mailing address2921 Greenbriar Dr Ste B1, Springfield, IL 62704-6440

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolTEXAS TECH UNIVERSITY HEALTH SCIENCE CENTER SCHOOL OF MEDICINE
Graduated 1975 (51 years in practice)
Group practice Psychological Services Of Central Illinois Pc — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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