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

Isabelle B Douyon, LMHC

Mental Health Counselor in Saugus, MA · enumerated 2012.

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

National Provider Identifier

1609139948

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Registry record

Entity type Individual (Type 1)

Name Isabelle B Douyon

Credential LMHC

Sex Female

Practice address Saugus, MA, 01906

Phone (781) 420-2645

Enumeration date Jun 21, 2012

Last updated in NPPES Oct 21, 2025

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

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Isabelle Douyon?

The National Provider Identifier (NPI) for Isabelle Douyon is 1609139948, a Type 1 (individual) record in the CMS NPPES registry.

Where does Isabelle Douyon practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-21.