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

Erin Lopynski, RDN

Registered Dietitian in Arlington, VA · enumerated 2019.

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

National Provider Identifier

1851864516

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Registry record

Entity type Individual (Type 1)

Name Erin Lopynski

Credential RDN

Sex Female

Practice address Arlington, VA, 22203

Phone (703) 507-1511

Enumeration date Jan 5, 2019

Last updated in NPPES Jan 5, 2019

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

Taxonomy & licenses

133NN1002X Nutrition Education Nutritionist Dietary & Nutritional Service Providers Secondary

2255A2300X Athletic Trainer Respiratory, Developmental, Rehabilitative and Restorative Service Providers Secondary

133V00000X Registered Dietitian Dietary & Nutritional 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 Erin Lopynski?

The National Provider Identifier (NPI) for Erin Lopynski is 1851864516, a Type 1 (individual) record in the CMS NPPES registry.

Where does Erin Lopynski practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-01-05.