21st Century Oncology LLC
NPI 1346561289 · Urology Physician · Crestview, FL
21st Century Oncology LLC is a Urology Physician organization in Crestview, FL (NPI 1346561289).
Provider details
- NPI number
- 1346561289
- Entity type
- Organization
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Parent organization
- Radiation Therapy Services Inc
- Organization subpart
- Yes
- Authorized official
- Dianna Harrison, Sr. Director of Provider Relations(239) 931-7342
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- General Practice Physician208D00000X
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Okaloosa-Walton Urology
- Doing business as
- Okaloosa-Walton Urology
Registry dates
- Enumerated
- 2010-06-15
- Last updated
- 2025-02-03
- Certified
- 2025-02-03
Frequently asked questions
- What is 21st Century Oncology LLC's NPI number?
- 21st Century Oncology LLC's National Provider Identifier (NPI) is 1346561289, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is 21st Century Oncology LLC?
- 21st Century Oncology LLC is classified in the NPPES registry as Urology Physician (Allopathic & Osteopathic Physicians).
- Where is 21st Century Oncology LLC located?
- 21st Century Oncology LLC's practice location on file with NPPES is 131 E Redstone Ave, Crestview, FL 32539-5326.
- What is 21st Century Oncology LLC's phone number?
- The practice phone number listed in the NPPES registry for 21st Century Oncology LLC is (850) 682-6333.
- Who is the authorized official for 21st Century Oncology LLC?
- The authorized official listed on 21st Century Oncology LLC's NPPES record is Dianna Harrison, Sr. Director of Provider Relations. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is 21st Century Oncology LLC's NPI active?
- Yes — 21st Century Oncology LLC's NPI (1346561289) is active in the NPPES registry as of the last update on 2025-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.