Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

21st Century Oncology of Jacksonville LLC

Medical Oncology Physician in Jacksonville, FL · enumerated 2008 · authorized official Daniel Dosoretz, President/Ceo.

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

National Provider Identifier

1215101902

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Registry record

Entity type Organization (Type 2)

Legal business name 21st Century Oncology of Jacksonville LLC

Parent organization Radiation Therapy Services Inc

Practice address 1235 San Marco Blvd, Suite 3, Jacksonville, FL, 32207

Phone (904) 493-5100

Fax (904) 493-5130

Enumeration date Apr 15, 2008

Last updated in NPPES Jan 5, 2011

Taxonomy & classification

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians Primary

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Daniel Dosoretz

Title President/Ceo

Phone (239) 931-7275

Other identifiers

Identifier	Type	State	Issuer
281173104	Medicaid	FL	-
281173100	Medicaid	FL	-
281173101	Medicaid	FL	-
281173102	Medicaid	FL	-
281173103	Medicaid	FL	-

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

Where is 21st Century Oncology of Jacksonville LLC located?

The practice location on file with NPPES is in Jacksonville, FL.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-01-05. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-01-05.