Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John William Hallett Jr., MD

Vascular Surgery Physician in Charleston, SC · enumerated 2005.

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

National Provider Identifier

1417931809

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. John William Hallett Jr.

Credential MD

Sex Male

Practice address 171 Ashley Ave, Charleston, SC, 29425

Phone (843) 792-1414

Enumeration date Nov 30, 2005

Last updated in NPPES May 10, 2016

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License 27482 (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
CH8347	Other	SC	RAILROAD MEDICARE GROUP
P00193529	Other	SC	RAILROAD MEDICARE PIN
P00739551	Other	SC	RAILROAD MEDICARE ID-RSFPN
274820	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

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 John Hallett?

John Hallett 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-05-10.