Nicholas Francis O'Riordan, PH. D.
Psychologist · Plainfield, IL
Nicholas Francis O'Riordan, PH. D. is a psychologist with a practice address in Plainfield, Illinois, and NPI 1497859078, issued on Sep 12, 2006. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nicholas Francis O'Riordan
- Credential
- PH. D.
- Primary taxonomy
- Psychologist 103T00000X
- Practice location
- 1705 Sierra Highlands CT, Plainfield, IL 60586
- Phone
- (815) 254-4555
- Enumerated
- Sep 12, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170329000328); accepts Medicare assignment
- Entity
- Type 1 · individual
Verify Nicholas Francis O'Riordan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Mid-America Psychological And Counseling Service PCMerrillville, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Psychologist providers in Illinois
There are 1,011 psychologist records in Illinois.
Other psychologist records in Illinois
- Margo Abrams, PSY.D.Chicago, IL1528584992
- Dorothy AddaeChicago, IL1548931561
- Mark Aghakhan, PSY.D.Chicago, IL1295843381
- Sweety Agrawal, PSYDChicago, IL1548554462
- Kavita Ajmere, PH.D.Chicago, IL1144538356
- Arin Alberts, PSYDDixon, IL1699912063
- Courtney Albinson, PH.D.Winnetka, IL1578339610
- Dinko Aleksandrov, PSYDChicago, IL1902322159
- Erin Alexander-Holton, PSYDChicago, IL1427091867
- Tayeba Alhoch, PSY.D.Chicago, IL1457786006
Common questions
What is Nicholas Francis O'Riordan, PH. D.'s NPI number?
Nicholas Francis O'Riordan, PH. D.'s National Provider Identifier (NPI) is 1497859078, issued on Sep 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas Francis O'Riordan, PH. D. located?
The NPPES record lists a practice address at 1705 Sierra Highlands CT, Plainfield, IL, 60586. Phone: (815) 254-4555. Providers update this record themselves, so call before visiting.
How can I verify Nicholas Francis O'Riordan, PH. D.'s license?
Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.