Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Cynthia A Lock Sr., LMSW

Q: What is the NPI number for Cynthia Lock?

The National Provider Identifier (NPI) for Cynthia Lock is 1588617369, a Type 1 (individual) record in the CMS NPPES registry.

Social Worker in Chesterfield, MI · enumerated 2006.

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

National Provider Identifier

1588617369

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Registry record

Entity type Individual (Type 1)

Name Ms. Cynthia A Lock Sr.

Credential LMSW

Sex Female

Practice address 32743 23 Mile Rd, Chesterfield, MI, 48047

Phone (586) 716-0980

Fax (586) 716-0985

Enumeration date May 19, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 6801061796 (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

Where does Cynthia Lock practice?

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

What is the NPI number for Cynthia Lock?

The National Provider Identifier (NPI) for Cynthia Lock is 1588617369, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.