Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Lydia Ruth Postlewait, M.S.

Mental Health Counselor in Ashland City, TN · enumerated 2010 · practices at State of Tennessee.

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

National Provider Identifier

1689986531

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Registry record

Entity type Individual (Type 1)

Name Mrs. Lydia Ruth Postlewait

Credential M.S.

Sex Female

Practice address 162 County Services Rd, Ashland City, TN, 37015

Phone (615) 463-6168

Enumeration date Jul 8, 2010

Last updated in NPPES Jul 8, 2010

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers 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.

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Frequently asked questions

Where does Lydia Postlewait practice?

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

What is the NPI number for Lydia Postlewait?

The National Provider Identifier (NPI) for Lydia Postlewait is 1689986531, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-08.