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

Melissa Waldmann-Villacis

Specialist in Mastic, NY · enumerated 2012.

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

National Provider Identifier

1487917597

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Registry record

Entity type Individual (Type 1)

Name Melissa Waldmann-Villacis

Sex Female

Practice address Mastic, NY, 11950

Phone (631) 281-2437

Enumeration date Jun 22, 2012

Last updated in NPPES Jun 22, 2012

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

Taxonomy & licenses

174400000X Specialist Other 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

Where does Melissa Waldmann-Villacis practice?

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

What is the NPI number for Melissa Waldmann-Villacis?

The National Provider Identifier (NPI) for Melissa Waldmann-Villacis is 1487917597, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-22.