Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David Lawrence Grisell, DO

Radiation Oncology Physician in Greenville, SC · enumerated 2005.

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

National Provider Identifier

1518959485

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Registry record

Entity type Individual (Type 1)

Name David Lawrence Grisell

Credential DO

Sex Male

Practice address 209 Crescent Ave, Greenville, SC, 29605

Phone (864) 436-7447

Enumeration date Aug 17, 2005

Last updated in NPPES Feb 8, 2021

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 1260 (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

Other identifiers

Identifier	Type	State	Issuer
200491700	Medicaid	IN	-
2478902	Medicaid	OH	-
64087455	Medicaid	KY	-
012603	Medicaid	SC	-
P00166987	Other	OH	RAILROAD MEDICARE

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

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.

What specialty is David Grisell?

David Grisell is registered in NPPES with the primary taxonomy of Radiation Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-08.