Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Grant Joseph Sullivan, D.O.

Hospitalist Physician in West Columbia, SC · enumerated 2008.

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

National Provider Identifier

1215115969

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Grant Joseph Sullivan

Credential D.O.

Sex Male

Practice address 2720 Sunset Blvd, West Columbia, SC, 29169

Phone (803) 791-2480

Fax (803) 935-4102

Enumeration date Feb 5, 2008

Last updated in NPPES Nov 11, 2020

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 36082 (SC) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 36082 (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

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 Grant Sullivan practice?

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

What is the NPI number for Grant Sullivan?

The National Provider Identifier (NPI) for Grant Sullivan is 1215115969, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-11.