Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ruth E. Mash, ARNP

Nurse Practitioner in Carroll, IA · enumerated 2016.

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

National Provider Identifier

1205290434

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Registry record

Entity type Individual (Type 1)

Name Ruth E. Mash

Credential ARNP

Sex Female

Practice address 1214 S Grant Rd, Carroll, IA, 51401

Phone (712) 792-7500

Fax (712) 792-7510

Enumeration date Apr 13, 2016

Last updated in NPPES Feb 22, 2024

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License A127940 (IA) 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 Ruth Mash?

Ruth Mash is registered in NPPES with the primary taxonomy of Nurse Practitioner. 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 2024-02-22.