MR. WILLIAM R TENNILL (LCSW) – Clinical Social Worker, NPI 1154339349

MR. WILLIAM R TENNILL (LCSW) is a healthcare provider. based in Springfield, Illinois. specializing in Clinical Social Worker. They hold the professional credentials LCSW. The NPI Number for MR. WILLIAM R TENNILL (LCSW) is 1154339349

Main info

Male
Name
MR. WILLIAM R TENNILL (LCSW)
NPI
1154339349
Phone
(217) 544-6464
Address
800 E CARPENTER ST
Enumeration Date
3 August 2006
Last Update Date
9 July 2007
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience43
Completeness75
Years active:19State licenses:0Digital endpointsOther names

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Provider Addresses for MR. WILLIAM R TENNILL (LCSW)

  • HSHS Saint John's Hospital, 800, East Carpenter Street, Springfield, Sangamon County, Illinois, 62769, United States

    PO BOX 1977

    SPRINGFIELD, IL 627025324

    Phone: (217) 544-6464

    Fax: (217) 757-6021

    Type: Mailing

  • 557, North Westgate Avenue, Jacksonville, Morgan County, Illinois, 62650, United States

    JACKSONVILLE, IL 626501156

    Phone: (217) 245-7275

    Fax: (217) 245-7427

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

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Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

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Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

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

Insurance plans in this area (ZIP 62702)

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Reviews

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Frequently asked questions

Is MR. WILLIAM R TENNILL (LCSW) listed with a National Provider Identifier?
Yes — MR. WILLIAM R TENNILL (LCSW) has NPI 1154339349 on file in the registry.
Would MR. WILLIAM R TENNILL (LCSW) appear as active to a payer?
You can treat MR. WILLIAM R TENNILL (LCSW) as active for directory purposes; confirm clinical privileges separately.
How would a patient describe MR. WILLIAM R TENNILL (LCSW)'s focus?
For MR. WILLIAM R TENNILL (LCSW), the primary taxonomy reads as Clinical Social Worker. Clinical services aligned with this taxonomy classification.
Is MR. WILLIAM R TENNILL (LCSW) located near Springfield?
MR. WILLIAM R TENNILL (LCSW) currently maps to Springfield, Illinois in this extract.
Does inactive status remove historical data?
Historical rows can remain visible after status changes — read the dates carefully.

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