Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1447393889 Individual Practitioner Male Practitioner

Dr. William F. Blackerby , PhD

Psychologist • Clarksville, TN

Professional Overview & Biography Verified Profile Summary

Dr. William Blackerby, PhD is a registered healthcare professional specializing in Psychologist in Clarksville, TN. Practice services are available at 141 CHESAPEAKE LN under active NPI credentials.

Frequently performed procedures and clinical services include psychotherapy, psychiatric diagnostic evaluation. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

141 Chesapeake Ln

Clarksville, TN 370405241

Telephone 6154459088

Specialty Benchmarks & Practice Insights

Comparative analytics for Psychologist in Clarksville, TN

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 29.0 Yrs
State Avg: 23.1 Yrs
Regional Practice Density
22 Specialists

Practicing in Clarksville, TN (554 Statewide)

Telehealth Adoption Rate
4.5% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2018)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
90832 Psychotherapy, 30 minutes
617 93 $176.34 $63.23
90832 Psychotherapy, 30 minutes
554 85 $175.71 $60.93
90791 Psychiatric diagnostic evaluation
55 54 $421.38 $121.90
90834 Psychotherapy, 45 minutes
51 35 $226.00 $84.32
90834 Psychotherapy, 45 minutes
48 32 $226.23 $80.88
90791 Psychiatric diagnostic evaluation
29 29 $421.00 $129.94

Medical Specialties & State Licenses

CMS Verified: 2025-10-23
Psychologist Primary Specialty

NUCC Taxonomy Code: 103T00000X

State License TN 0000001231

A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
1519219 (TN)
Commercial Insurance / Payer ID Caqh Pin
12163042 (TN)

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

2 Associated Practitioners
NPI 1447225826

Master of Science in Nursing, Advanced Registered Nurse Practitioner, Family Nurse Practitioner (Certified)

Orlando Jones

Nurse Practitioner - Family

NPI 1902262298

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

12 Historical Events
📍
Updated Practice Location October 23, 2025

Registered at 141 CHESAPEAKE LN, CLARKSVILLE, TN 370405241 (Tel: 6154459088)

📍
Updated Business Mailing Address October 23, 2025

Registered at 3393 LAKE BROOK BLVD, KNOXVILLE, TN 379093708 (Tel: 6154459088)

📍
Updated Practice Location May 17, 2023

Registered at 816 E OLDHAM AVE, KNOXVILLE, TN 379175567 (Tel: 8655239163)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 15, 2023

Psychologist (License #0000001231 in TN)

📍
Updated Practice Location July 02, 2020

Registered at 71 MEDICAL GROUP, 527 GOTT ROAD VANCE AFB, ENID, OK 737055105 (Tel: 5802137419)

📍
Updated Business Mailing Address July 02, 2020

Registered at 71 MEDICAL GROUP, 527 GOTT ROAD VANCE AFB, ENID, OK 737055105 (Tel: 5802137419)

NPI Profile Active June 04, 2015

NPI status registered as active in NPPES database

📍
Updated Practice Location June 04, 2015

Registered at 119 BOONE RIDGE DR, SUITE 201, JOHNSON CITY, TN 376154998 (Tel: 4232821480)

📍
Updated Business Mailing Address June 04, 2015

Registered at 119 BOONE RIDGE DR, SUITE 201, JOHNSON CITY, TN 376154998 (Tel: 4232821480)

👤
Provider Name / Credentials Updated June 04, 2015

Recorded as WILLIAM BLACKERBY, PH.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) June 04, 2015

Clinical Neuropsychologist (License #P1231 in TN)

🟢
Initial NPI Registration & Enumeration February 15, 2007

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews
No patient reviews submitted yet for Dr. William Blackerby. Be the first to share your experience!

Sign in to leave a review for Dr. William Blackerby

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1447393889
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: February 15, 2007
Last Update: October 23, 2025
Sole Proprietor: Yes

Mailing Address

3393 Lake Brook Blvd

Knoxville, TN 379093708

Phone: 6154459088

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.