Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Cuyler Calton Jr., MD

Vascular Surgery Physician in Spartanburg, SC · enumerated 2005.

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

National Provider Identifier

1609876374

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name William Cuyler Calton Jr.

Credential MD

Sex Male

Practice address 225 E Wood St, Spartanburg, SC, 29303

Phone (864) 583-4420

Fax (864) 560-4413

Enumeration date Jul 26, 2005

Last updated in NPPES Dec 8, 2020

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License 21595 (SC) 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
576000934-405	Other	-	UNITED HEALTHCARE
89063N7	Medicaid	NC	-
2149912	Other	-	FIRST HEALTH
5855667	Other	SC	AETNA
SCC4393365	Other	SC	MEDICARE PIN
197901	Other	SC	MEDCOST
215957	Medicaid	SC	-
F710715019	Other	SC	MEDICARE PIN

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 William Calton?

William Calton is registered in NPPES with the primary taxonomy of Vascular Surgery 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

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-08.