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

Calvin Armstrong

Home Health Aide in Dayton, OH · enumerated 2014.

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

National Provider Identifier

1659771483

Verified

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Registry record

Entity type Individual (Type 1)

Name Calvin Armstrong

Sex Male

Practice address Dayton, OH, 45405

Phone (937) 580-4774

Enumeration date Aug 29, 2014

Last updated in NPPES Aug 29, 2014

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

Taxonomy & licenses

374U00000X Home Health Aide Nursing Service Related Providers · License TR248537 (OH) Primary

376K00000X Nurse's Aide Nursing Service Related Providers · License TR248537 (OH) 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

Where does Calvin Armstrong practice?

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

What is the NPI number for Calvin Armstrong?

The National Provider Identifier (NPI) for Calvin Armstrong is 1659771483, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-08-29.