Joseph Knox
NPI 1457989766 · Diagnostic Radiology Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Knox is a Diagnostic Radiology Physician provider in San Jose, CA (NPI 1457989766).
Provider details
- NPI number
- 1457989766
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- A189627 (CA)
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
6 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
Registry dates
- Enumerated
- 2020-03-31
- Last updated
- 2025-04-22
- Certified
- 2025-04-22
Frequently asked questions
- What is Joseph Knox's NPI number?
- Joseph Knox's National Provider Identifier (NPI) is 1457989766, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Knox's specialty?
- Joseph Knox is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Knox located?
- Joseph Knox's practice location on file with NPPES is 751 S Bascom Ave, San Jose, CA 95128-2604.
- What is Joseph Knox's phone number?
- The practice phone number listed in the NPPES registry for Joseph Knox is (925) 395-1888.
- Does Joseph Knox accept Medicare?
- Joseph Knox is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Knox's NPI active?
- Yes — Joseph Knox's NPI (1457989766) is active in the NPPES registry as of the last update on 2025-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.