NPI Portal NPI Lookup & Verification

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

Mazie Sunshine Underwood, MS, ATC, CSCS

Athletic Trainer in Charleston, SC · enumerated 2019 · practices at Doctors Care, P.A..

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

National Provider Identifier

1962055632

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Registry record

Entity type Individual (Type 1)
Name Mazie Sunshine Underwood
Credential MS, ATC, CSCS
Sex Female
Practice address Charleston, SC, 29492
Phone (843) 797-5050
Enumeration date Jul 22, 2019
Last updated in NPPES Jul 22, 2019

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

Taxonomy & licenses

2255A2300X Athletic Trainer Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 1906 (SC) Primary

Other identifiers

Identifier Type State Issuer
1906 Other SC SC DHEC

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 Mazie Underwood?
Mazie Underwood is registered in NPPES with the primary taxonomy of Athletic Trainer. 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 2019-07-22.