Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Mary Catherine Steffan, NP-C

Q: What is the NPI number for Mary Steffan?

The National Provider Identifier (NPI) for Mary Steffan is 1366954810, a Type 1 (individual) record in the CMS NPPES registry.

Family Nurse Practitioner in Lancaster, OH · enumerated 2017 · practices at Ohio Cvs Stores LLC.

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

National Provider Identifier

1366954810

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Registry record

Entity type Individual (Type 1)

Name Mrs. Mary Catherine Steffan

Credential NP-C

Sex Female

Practice address 111 S Memorial Dr, Lancaster, OH, 43130

Phone (740) 653-2631

Enumeration date Oct 24, 2017

Last updated in NPPES Dec 19, 2018

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License APRN.CNP.021923 (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 is the NPI number for Mary Steffan?

The National Provider Identifier (NPI) for Mary Steffan is 1366954810, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Steffan practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-12-19.