William Johnstone, M.D.
NPI 1417958091 · Diagnostic Radiology Physician · Bristol, TN
William Johnstone, M.D. is a Diagnostic Radiology Physician provider in Bristol, TN (NPI 1417958091).
Provider details
- NPI number
- 1417958091
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 14736 (TN)
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
Registry dates
- Enumerated
- 2005-08-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Johnstone's NPI number?
- William Johnstone's National Provider Identifier (NPI) is 1417958091, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Johnstone's specialty?
- William Johnstone is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Johnstone located?
- William Johnstone's practice location on file with NPPES is 1 Medical Park Blvd, Bristol, TN 37620-7430.
- What is William Johnstone's phone number?
- The practice phone number listed in the NPPES registry for William Johnstone is (423) 968-1144.
- Is William Johnstone's NPI active?
- Yes — William Johnstone's NPI (1417958091) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.