WILLIAM CARL ROOK M.A., LCPC
NPI 1194736397
Counselor - Mental Health in O Fallon, IL

Q: What is William Rook's NPI number?

The NPI number for William Rook is 1194736397. It was assigned to this individual provider in the NPPES registry on August 11, 2006.

Q: What is William Rook's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Q: When was this NPI record last updated?

The NPPES record for William Rook was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 11, 2006

732 SUSSEX WAY, SUITE B, O FALLON, IL 62269(618) 531-8501 Get Directions Write a Review

NPPES record last updated: July 9, 2007. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About William Carl Rook M.a., Lcpc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM CARL ROOK M.A., LCPC (NPI 1194736397) is an individual mental health provider in O Fallon, Illinois and active in the NPI registry since August 2006.

NPPES Registry Identity

NPI1194736397

Entity TypeIndividualMale

Primary Taxonomy101YM0800X

Provider Legal NameWILLIAM CARL ROOKCredential: M.A., LCPC

Location Address732 SUSSEX WAY, SUITE BO Fallon, IL 62269-3074

Mailing Address916 Saint Nicholas DriveO Fallon, IL 62269 · (618) 531-8501

Phone(618) 531-8501

Sole ProprietorYes

Enumeration DateAugust 11, 2006

Last NPPES UpdateJuly 9, 2007

✔ NPI 1194736397 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers

Taxonomy Code101YM0800X

732 SUSSEX WAY, O Fallon, IL 62269

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Other Identifiers 4

Medicare UPIN399017IL

Medicare UPIN08232032IL

Medicare UPIN473235IL

Medicare UPIN93478IL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include UnitedHealthcare.Insurance ›

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. PATRICK NAKASHIMA-MORAN D.O.

Family Medicine

732 SUSSEX WAY
O FALLON, IL 62269

St. Clair County (618) 607-8110

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Rook's NPI number?

The NPI number for William Rook is 1194736397. It was assigned to this individual provider in the NPPES registry on August 11, 2006.

Where is William Rook located?

William Rook practices at 732 Sussex Way Suite B, O Fallon, IL 62269. The listed phone number is (618) 531-8501.

What is William Rook's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

What insurance does William Rook accept?

Health plans from UnitedHealthcare list William Rook as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Rook was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.