Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Karla J Block, LMSW

Q: What is the NPI number for Karla Block?

The National Provider Identifier (NPI) for Karla Block is 1811135486, a Type 1 (individual) record in the CMS NPPES registry.

Social Worker in East Lansing, MI · enumerated 2009.

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

National Provider Identifier

1811135486

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Registry record

Entity type Individual (Type 1)

Name Ms. Karla J Block

Credential LMSW

Sex Female

Practice address East Lansing, MI, 48823

Phone (517) 214-9154

Enumeration date Feb 4, 2009

Last updated in NPPES Nov 29, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 6801085393 (MI) Secondary

104100000X Social Worker Behavioral Health & Social Service Providers · License 6801085393 (MI) Primary

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

What is the NPI number for Karla Block?

The National Provider Identifier (NPI) for Karla Block is 1811135486, a Type 1 (individual) record in the CMS NPPES registry.

Where does Karla Block practice?

The practice location on file with NPPES is in East Lansing, MI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-29.