Fortress Corporation
NPI 1558338798 · Diagnostic Radiology Physician · Knoxville, TN
Fortress Corporation is a Diagnostic Radiology Physician organization in Knoxville, TN (NPI 1558338798).
Provider details
- NPI number
- 1558338798
- Entity type
- Organization
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Leslie Irwin, Vice President-Fortress Corp(865) 531-5248
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- Ft Sanders West Diagnostic Center
Registry dates
- Enumerated
- 2006-03-07
- Last updated
- 2022-07-21
Frequently asked questions
- What is Fortress Corporation's NPI number?
- Fortress Corporation's National Provider Identifier (NPI) is 1558338798, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Fortress Corporation?
- Fortress Corporation is classified in the NPPES registry as Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Fortress Corporation located?
- Fortress Corporation's practice location on file with NPPES is 210 Fort Sanders West Blvd, Knoxville, TN 37922-3355.
- What is Fortress Corporation's phone number?
- The practice phone number listed in the NPPES registry for Fortress Corporation is (865) 531-5400.
- Who is the authorized official for Fortress Corporation?
- The authorized official listed on Fortress Corporation's NPPES record is Leslie Irwin, Vice President-Fortress Corp. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Fortress Corporation's NPI active?
- Yes — Fortress Corporation's NPI (1558338798) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.