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

Mary Lillian Dolan Johnson, DO

Pediatrics Physician in Beaufort, SC · enumerated 2014 · practices at Sea Island Pediatrics.

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

National Provider Identifier

1821402405

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Registry record

Entity type Individual (Type 1)

Name Mary Lillian Dolan Johnson

Credential DO

Sex Female

Practice address Beaufort, SC, 29902

Phone (843) 524-1078

Enumeration date Jun 11, 2014

Last updated in NPPES Jul 21, 2022

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

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License 5101021066 (MI) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 37676 (SC) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

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 Dolan Johnson practice?

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

What is the NPI number for Mary Dolan Johnson?

The National Provider Identifier (NPI) for Mary Dolan Johnson is 1821402405, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.