DR. GREGORY TIERNEY (PHD) – Clinical Psychologist, NPI 1609949809

DR. GREGORY TIERNEY (PHD) is a healthcare provider. based in Dekalb, Illinois. specializing in Clinical Psychologist. They hold the professional credentials PHD. They hold a License No. 071.006674 (IL). The NPI Number for DR. GREGORY TIERNEY (PHD) is 1609949809

Main info

Male
Name
DR. GREGORY TIERNEY (PHD)
NPI
1609949809
Phone
(815) 758-3627
Address
3498 SANBORN LN
Enumeration Date
16 November 2006
Last Update Date
23 May 2018
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience52
Completeness75
Years active:19State licenses:1Digital endpointsOther names

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Provider Addresses for DR. GREGORY TIERNEY (PHD)

  • 3498, Sanborn Lane, The Bridges of Rivermist, DeKalb, DeKalb Township, DeKalb County, Illinois, 60115, United States

    DEKALB, IL 601158304

    Phone: (815) 758-3627

    Type: Mailing

  • 920, South Prairie Drive, Sycamore, Cortland Township, DeKalb County, Illinois, 60178, United States

    SUITE F

    SYCAMORE, IL 60178

    Phone: (815) 899-0339

    Fax: (815) 899-2098

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

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Medicare Enrollment & Revalidation

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Medicare Utilization (FFS)

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No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 60115)

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Reviews

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Frequently asked questions

How do payers reference DR. GREGORY TIERNEY (PHD)?
For DR. GREGORY TIERNEY (PHD), use NPI 1609949809 as the unique 10-digit identifier.
Would DR. GREGORY TIERNEY (PHD) appear as active to a payer?
You can treat DR. GREGORY TIERNEY (PHD) as active for directory purposes; confirm clinical privileges separately.
What kind of doctor is DR. GREGORY TIERNEY (PHD)?
DR. GREGORY TIERNEY (PHD) is associated with Clinical Psychologist in the directory — Clinical services aligned with this taxonomy classification.
Is DR. GREGORY TIERNEY (PHD) associated with Dekalb?
Public fields place DR. GREGORY TIERNEY (PHD) around Dekalb, Illinois. Always confirm the exact site before visiting.
When was this NPI issued?
Enumeration for DR. GREGORY TIERNEY (PHD) is noted as November 16, 2006 where the registry provides it.

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