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

Arielle Carla Castro Mossberg

Mental Health Counselor in Medford, MA · enumerated 2012.

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

National Provider Identifier

1598009730

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Registry record

Entity type Individual (Type 1)

Name Arielle Carla Castro Mossberg

Sex Female

Practice address Medford, MA, 02155

Phone (734) 934-9524

Enumeration date Nov 11, 2012

Last updated in NPPES Apr 11, 2024

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 · License 8195 (MA) 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.

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Frequently asked questions

How do I verify Arielle Mossberg's NPI record?

Cross-check NPI 1598009730 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1598009730 active?

Yes, as of the latest NPPES snapshot, NPI 1598009730 is active (record last updated 2024-04-11).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-11.