Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Corwin Oswald Demattos

Family Nurse Practitioner in Grayson, GA · enumerated 2020.

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

National Provider Identifier

1720617756

Verified

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Registry record

Entity type Individual (Type 1)

Name Corwin Oswald Demattos

Sex Male

Practice address 1637 Atlanta Hwy Suite A, Grayson, GA, 30017

Phone (678) 344-8268

Enumeration date Apr 2, 2020

Last updated in NPPES Dec 2, 2021

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 189365 (GA) Primary

Other identifiers

Identifier	Type	State	Issuer
054674999	Other	GA	GEORGIA IDENTIFICATION CARD

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 Corwin Demattos?

The National Provider Identifier (NPI) for Corwin Demattos is 1720617756, a Type 1 (individual) record in the CMS NPPES registry.

Where does Corwin Demattos practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-02.