Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Charles Frederick Greer, MD

Diagnostic Radiology Physician in Sullivans Island, SC · enumerated 2006.

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

National Provider Identifier

1003825878

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Charles Frederick Greer

Credential MD

Sex Male

Practice address Sullivans Island, SC, 29482

Phone (843) 729-4525

Enumeration date Aug 7, 2006

Last updated in NPPES Mar 25, 2026

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2085U0001X Diagnostic Ultrasound Physician Allopathic & Osteopathic Physicians · License MD10345 (SC) Secondary

2085N0904X Nuclear Radiology Physician Allopathic & Osteopathic Physicians · License MD10345 (SC) Secondary

2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License MD10345 (SC) Secondary

2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License 76724 (TN) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License MD10345 (SC) Primary

2085P0229X Pediatric Radiology Physician Allopathic & Osteopathic Physicians · License MD10345 (SC) Secondary

2085B0100X Body Imaging Physician Allopathic & Osteopathic Physicians · License MD10345 (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
103453	Medicaid	SC	-
8683	Other	SC	MEDICARE GROUP
405486923	Other	SC	BCBS
1709	Other	SC	MEDICARE GROUP

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 Charles Greer?

Charles Greer is registered in NPPES with the primary taxonomy of Diagnostic Radiology 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-25.