NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Cancer Specialists, LLC

Hematology & Oncology Physician in Fleming Island, FL · enumerated 2021 · authorized official Robert Phelan, Ceo.

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

National Provider Identifier

1356912927

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Cancer Specialists, LLC
Other name <Unavail>
Practice address 2370 Market Dr, Fleming Island, FL, 32003
Phone (904) 264-6201
Fax (904) 264-6858
Enumeration date Jul 6, 2021
Last updated in NPPES Jun 12, 2025

Taxonomy & classification

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians Primary
2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Robert Phelan
Title Ceo
Phone (904) 363-7442

Other identifiers

Identifier Type State Issuer
GM089A Other FL MEDICARE
006337815 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for Cancer Specialists, LLC?
NPPES lists Robert Phelan (Ceo) as the authorized official for this organization.
What is the NPI number for Cancer Specialists, LLC?
The NPI for Cancer Specialists, LLC is 1356912927, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-12.