Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Erin Colleen Dietzel, REGISTERED NURSE

Addiction (Substance Use Disorder) Registered Nurse in Farmingville, NY · enumerated 2023.

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

National Provider Identifier

1841975752

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Registry record

Entity type Individual (Type 1)

Name Mrs. Erin Colleen Dietzel

Credential REGISTERED NURSE

Sex Female

Practice address 100 Granny Rd Ste 1, Farmingville, NY, 11738

Phone (631) 666-1234

Enumeration date Jun 19, 2023

Last updated in NPPES Jun 19, 2023

Taxonomy & licenses

163WA0400X Addiction (Substance Use Disorder) Registered Nurse Nursing Service Providers · License 603656 (NY) 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 specialty is Erin Dietzel?

Erin Dietzel is registered in NPPES with the primary taxonomy of Addiction (Substance Use Disorder) Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-19.