Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Nicholas Francis O'Riordan, PHD

Individual provider Psychologist · NPI 1497859078

Dr. Nicholas Francis O'Riordan, PHD is a Clinical Psychologist in Plainfield, Illinois. Qualified in 2015, 11 years ago. Practices with Mid-America Psychological and Counseling Service PC, a 6-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
11
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.

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Practice location Address checks out

1705 Sierra Highlands Ct
Plainfield, IL 60586-5934
Phone: (815) 254-4555
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X (IL)

Record details

NPI number1497859078
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedSeptember 12, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Mid-America Psychological And Counseling Service Pc — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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