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

Marcus A Underwood, LAT, ATC

Athletic Trainer in Smyrna, GA · enumerated 2019.

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

National Provider Identifier

1982167789

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Registry record

Entity type Individual (Type 1)

Name Marcus A Underwood

Credential LAT, ATC

Sex Male

Practice address Smyrna, GA, 30080

Phone (678) 523-1547

Enumeration date Apr 9, 2019

Last updated in NPPES Apr 9, 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 AT002377 (GA) Primary

Other identifiers

Identifier	Type	State	Issuer
AT002377	Other	GA	GEORGIA SECRETARY OF STATE
BOC217903	Other	-	BOARD OF CERTIFICATION

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 Marcus Underwood practice?

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

What is the NPI number for Marcus Underwood?

The National Provider Identifier (NPI) for Marcus Underwood is 1982167789, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-09.