Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Mary Ann Southerlan, RDH, PHDH

Dental Hygienist in Lincoln, IL · enumerated 2020.

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

National Provider Identifier

1235732579

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Registry record

Entity type Individual (Type 1)

Name Mrs. Mary Ann Southerlan

Credential RDH, PHDH

Sex Female

Practice address 109 3rd St, Lincoln, IL, 62656

Phone (217) 735-2317

Enumeration date Nov 19, 2020

Last updated in NPPES Nov 19, 2020

Taxonomy & licenses

124Q00000X Dental Hygienist Dental Providers · License 020-004826 (IL) 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

Where does Mary Southerlan practice?

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

What is the NPI number for Mary Southerlan?

The National Provider Identifier (NPI) for Mary Southerlan is 1235732579, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-19.