Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Roy N Grantham, MD

Vascular Surgery Physician in Oklahoma City, OK · enumerated 2005.

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

National Provider Identifier

1568457265

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Registry record

Entity type Individual (Type 1)

Name Roy N Grantham

Credential MD

Sex Male

Practice address 4221 S Western Ave, 2010, Oklahoma City, OK, 73109

Phone (405) 231-0540

Fax (405) 644-5309

Enumeration date Sep 19, 2005

Last updated in NPPES Dec 4, 2014

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License 16465 (OK) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
5765290	Other	OK	AETNA
060052653	Other	-	RAILROAD MEDICARE
100122170A	Medicaid	OK	-
125309100	Other	OK	DOL

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.

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Frequently asked questions

Is NPI 1568457265 active?

Yes, as of the latest NPPES snapshot, NPI 1568457265 is active (record last updated 2014-12-04).

How do I verify Roy Grantham's NPI record?

Cross-check NPI 1568457265 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-12-04.