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

Maryann Loutzenhiser

Addiction (Substance Use Disorder) Registered Nurse in Ashtabula, OH · enumerated 2014.

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

National Provider Identifier

1053713248

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Maryann Loutzenhiser

Sex Female

Practice address Ashtabula, OH, 44004

Phone (440) 992-8552

Fax (440) 992-6631

Enumeration date Sep 19, 2014

Last updated in NPPES Sep 19, 2014

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

Taxonomy & licenses

163WA0400X Addiction (Substance Use Disorder) Registered Nurse Nursing Service Providers · License RN-247649 (OH) 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 Maryann Loutzenhiser?

Maryann Loutzenhiser 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-09-19.