Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Casey Jack Cronan, DO

Infectious Disease Physician in Spartanburg, SC · enumerated 2014.

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

National Provider Identifier

1821415647

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Registry record

Entity type Individual (Type 1)

Name Dr. Casey Jack Cronan

Credential DO

Sex Male

Practice address 101 E Wood St, Spartanburg, SC, 29303

Phone (645) 606-8068

Fax (864) 560-7329

Enumeration date Mar 19, 2014

Last updated in NPPES Dec 15, 2020

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 071594 (GA) Secondary

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 39100 (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
SC86643365	Other	SC	MEDICARE PIN
391043	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.

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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 Casey Cronan?

Casey Cronan is registered in NPPES with the primary taxonomy of Infectious Disease Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-15.