Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Brook D Croke, M.S., C.G.C.

Genetic Counselor (M.S.) in Springfield, IL · enumerated 2011.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1427327733

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Registry record

Entity type Individual (Type 1)

Name Mrs. Brook D Croke

Credential M.S., C.G.C.

Sex Female

Practice address 400 N. 9th Street, 3rd Floor Clinic B, Springfield, IL, 62702

Phone (217) 545-8000

Fax (217) 545-9759

Enumeration date Dec 16, 2011

Last updated in NPPES Feb 5, 2020

Taxonomy & licenses

170300000X Genetic Counselor (M.S.) Other Service Providers · License 246-000143 (IL) Primary

170300000X Genetic Counselor (M.S.) Other Service Providers · License 246.000143 (IL) Secondary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1427327733 active?

Yes, as of the latest NPPES snapshot, NPI 1427327733 is active (record last updated 2020-02-05).

How do I verify Brook Croke's NPI record?

Cross-check NPI 1427327733 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-05.