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

Charles C Thornton, PMHNP-BC

Psychiatric/Mental Health Nurse Practitioner in Harleysville, PA · enumerated 2019.

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

National Provider Identifier

1821642729

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Registry record

Entity type Individual (Type 1)

Name Charles C Thornton

Credential PMHNP-BC

Sex Male

Practice address Harleysville, PA, 19438

Phone (267) 933-5205

Fax (267) 932-8660

Enumeration date Jul 29, 2019

Last updated in NPPES Jul 29, 2019

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

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License SP020433 (PA) 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 Charles Thornton practice?

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

What is the NPI number for Charles Thornton?

The National Provider Identifier (NPI) for Charles Thornton is 1821642729, 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 2019-07-29.