Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Psychotherapy LLC

Clinical Social Worker in Crystal City, MO · enumerated 2023 · authorized official Diana Blackwell, Clinical Social Worker.

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

National Provider Identifier

1164203188

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Registry record

Entity type Organization (Type 2)

Legal business name Psychotherapy LLC

Practice address 508 N Truman Blvd Ste F, Crystal City, MO, 63019

Phone (636) 931-8784

Fax (636) 465-0026

Enumeration date Oct 6, 2023

Last updated in NPPES Jul 3, 2026

Taxonomy & classification

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Primary

Authorized official

Name Diana Blackwell

Title Clinical Social Worker

Phone (573) 315-5549

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 is Psychotherapy LLC located?

The practice location on file with NPPES is in Crystal City, MO.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2026-07-03. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Diana Blackwell Clinical Social Worker · Crystal City, MO NPI 1811088446

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-03.