IndividualActive
Mark Barnes, PH.D.
NPI 1538209747 · Clinical Psychologist · Knoxville, TN
Mark Barnes, PH.D. is a Clinical Psychologist provider in Knoxville, TN (NPI 1538209747).
Provider details
- NPI number
- 1538209747
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- P1669 (TN)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
1640 W Clinch Ave
Knoxville, TN 37916-2524
Phone: (865) 637-5848
Fax: (865) 525-4026
Street-level locationGet directions
Mailing address
1640 W Clinch Ave
Knoxville, TN 37916-2524
Registry dates
- Enumerated
- 2007-02-07
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Barnes's NPI number?
- Mark Barnes's National Provider Identifier (NPI) is 1538209747, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Barnes's specialty?
- Mark Barnes is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Barnes located?
- Mark Barnes's practice location on file with NPPES is 1640 W Clinch Ave, Knoxville, TN 37916-2524.
- What is Mark Barnes's phone number?
- The practice phone number listed in the NPPES registry for Mark Barnes is (865) 637-5848.
- Is Mark Barnes's NPI active?
- Yes — Mark Barnes's NPI (1538209747) 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.