Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diane Tomasky, RN

Health Educator in Frederick, MD · enumerated 2021.

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

National Provider Identifier

1609536432

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Registry record

Entity type Individual (Type 1)

Name Diane Tomasky

Credential RN

Sex Female

Practice address 501 W 7th St, Frederick, MD, 21701

Phone (240) 439-8812

Enumeration date Dec 21, 2021

Last updated in NPPES Dec 21, 2021

Taxonomy & licenses

174H00000X Health Educator Other Service Providers Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

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 Diane Tomasky?

The National Provider Identifier (NPI) for Diane Tomasky is 1609536432, a Type 1 (individual) record in the CMS NPPES registry.

Where does Diane Tomasky practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-21.