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William Mixon, MD
NPI 1356431472 · Internal Medicine Physician · Knoxville, TN
William Mixon, MD is a Internal Medicine Physician provider in Knoxville, TN (NPI 1356431472).
Provider details
- NPI number
- 1356431472
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 15520 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
1818 Andy Holt
Knoxville, TN 37996-0001
Phone: (865) 974-3135
Fax: (865) 974-2000
Street-level locationGet directions
Mailing address
3624 Iskagna Dr
Knoxville, TN 37919-7762
Registry dates
- Enumerated
- 2006-10-13
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Mixon's NPI number?
- William Mixon's National Provider Identifier (NPI) is 1356431472, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mixon's specialty?
- William Mixon is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Mixon located?
- William Mixon's practice location on file with NPPES is 1818 Andy Holt, Knoxville, TN 37996-0001.
- What is William Mixon's phone number?
- The practice phone number listed in the NPPES registry for William Mixon is (865) 974-3135.
- Is William Mixon's NPI active?
- Yes — William Mixon's NPI (1356431472) 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.