Mark Holder Barnes, PH.D.
Clinical Psychologist · Knoxville, TN
Mark Holder Barnes, PH.D. is a clinical psychologist with a practice address in Knoxville, Tennessee, and NPI 1538209747, issued on Feb 7, 2007. Check the license (Tennessee P1669, as entered in NPPES) with the Tennessee board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark Holder Barnes
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- P1669 TN
Self-reported in NPPES; status is on the state search - Practice location
- 1640 W Clinch Ave, Knoxville, TN 37916
- Phone
- (865) 637-5848
- Enumerated
- Feb 7, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (865) 525-4026
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 795 in Tennessee → Look up another NPI →
Also registered at 1640 W Clinch Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Laurel Goodrich, PH.D.Clinical Psychologist1679628598
- Cynthia Scarborough, MSW LCSWClinical Social Worker1831280155
- Harold Wagner, PHDClinical Psychologist1700996196
Verify Mark Holder Barnes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Tennessee board licenses this profession
Search for license P1669Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mark Holder Barnes among 795 clinical psychologist records in Tennessee
Mark Holder Barnes, PH.D. is one of 795 clinical psychologist records with a practice address in Tennessee. 13% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 36% of them.
- NPI issued2007 · 36% of these records are older, 45% newer
- In a Medicare fileNo · 13% of these records are
- In the CMS Doctors and Clinicians fileNo · 23% of these records are
- Record last updated2007 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Psychologist providers in Tennessee
There are 795 clinical psychologist records in Tennessee. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 795 in Tennessee → Every provider in Knoxville → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Laurel Goodrich, PH.D.Knoxville, TN 379161679628598
- Harold Wagner, PHDKnoxville, TN 379161700996196
- Daniel Mills, PSY.D.Knoxville, TN 379171093190316
- Michael O'Connell, PHDKnoxville, TN 379171619096237
- Liz Donald, PH.D.Knoxville, TN 379181447245295
- Diana McCoy, PHDKnoxville, TN 379181497910293
- Pamela McNish, PH.D.Knoxville, TN 379181225138969
- Regina Austin, PH.D.Knoxville, TN 379191992701577
Common questions
What is Mark Holder Barnes, PH.D.'s NPI number?
Mark Holder Barnes, PH.D.'s National Provider Identifier (NPI) is 1538209747, issued on Feb 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark Holder Barnes, PH.D. located?
The NPPES record lists a practice address at 1640 W Clinch Ave, Knoxville, TN, 37916. Phone: (865) 637-5848. Providers update this record themselves, so call before visiting.
How can I verify Mark Holder Barnes, PH.D.'s license?
NPPES lists Tennessee license number P1669, as entered by the provider. Search the Tennessee board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.