Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Terry A Grainger, MD

Sleep Medicine (Internal Medicine) Physician in Columbia, SC · enumerated 2006 · practices at Palmetto Health - University of South Carolina Medical Group.

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

National Provider Identifier

1003854464

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Registry record

Entity type Individual (Type 1)

Name Dr. Terry A Grainger

Credential MD

Sex Male

Practice address 8 Richland Medical Park Dr Ste 100, Columbia, SC, 29203

Phone (803) 434-3800

Fax (803) 744-2759

Enumeration date Jun 4, 2006

Last updated in NPPES Sep 30, 2025

Taxonomy & licenses

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 16593 (SC) Primary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 16593 (SC) Secondary

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
165939	Medicaid	SC	-

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 specialty is Terry Grainger?

Terry Grainger is registered in NPPES with the primary taxonomy of Sleep Medicine (Internal Medicine) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

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Phyllis Williamson Acute Care Nurse Practitioner · Columbia, SC NPI 1962404780 Linda Vanduys Acute Care Nurse Practitioner · Columbia, SC NPI 1134100159 Eric Shoup Physician Assistant · Columbia, SC NPI 1073576781 Sultan Siddique Clinical Cardiac Electrophysiology Physician · Columbia, SC NPI 1417995259 Patrick Hall Interventional Cardiology Physician · Columbia, SC NPI 1205872850 Rodel Bobadilla Family Nurse Practitioner · Columbia, SC NPI 1942312111 Guillermo Pineda Interventional Cardiology Physician · Columbia, SC NPI 1205920709 Roy Smith Family Nurse Practitioner · Columbia, SC NPI 1912097056

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-30.