Psychologist | Clinical Psychology

Dr. Mark Holder Barnes, PH.D.

1640 W Clinch Ave, Knoxville, Tennessee, 37916-2524

About Dr. Mark Holder Barnes

Dr. Mark Holder Barnes is a psychologist based in Knoxville, Tennessee who is specialized in Clinical Psychology. Active license number of Dr. Mark Holder Barnes is P1669 for Clinical Psychology in Tennessee. His current practice location is 1640 W Clinch Ave, Knoxville. Patients can contact him at 865-637-5848 or can fax him at 865-525-4026. Dr. Mark Holder Barnes, PH.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1538209747.

Dr. Mark Holder Barnes is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Dr. Mark Holder Barnes's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Dr. Mark Holder Barnes
Specialization Clinical Psychology
Credentials PH.D.
Gender Male
Practice Address: 1640 W Clinch Ave,
Knoxville, TN - 37916-2524
Fax 865-525-4026

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1538209747
NPI Enumeration Date: 07 Feb, 2007
NPI Last Update On: 08 Jul, 2007

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Dr. Mark Holder Barnes are as mentioned below.

License NumberSpecializationStateStatus
P1669Clinical Psychology TennesseePrimary

Other Medical Identifiers

Other professional identifiers associated with Dr. Mark Holder Barnes such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
0151170OtherTennesseeBC-BS OF TN PROVIDER

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Dr. Mark Holder Barnes
1640 W Clinch Ave,
Knoxville, TN - 37916-2524
Phone: 865-637-5848
Fax: 865-525-4026

Book an Appointment with Dr. Mark Holder Barnes

To schedule an appointment, contact Dr. Mark Holder Barnes at 1640 W Clinch Ave, Knoxville, Tennessee or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Mark Holder Barnes:

Dr. Mark Holder Barnes is a psychologist specializing in Clinical Psychology. He is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Dr. Mark Holder Barnes is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Dr. Mark Holder Barnes practices at 1640 W Clinch Ave, Knoxville, Tennessee, 37916-2524.

To schedule an appointment with Dr. Mark Holder Barnes, please contact the office at 865-637-5848.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.