NPI age
16 years
Enumerated 2009-09-11
● Active
Type 1 · Individual
DR. Thaddeus Martin Cox, LPC-S, LPA, PHD, LP
Cox is 1 of 359 psychologist providers in Austin and 1 of 3401 in Texas.
Primary specialty
Psychologist
Plus 6 subspecialties
Licensed in
CA, MD, CO, VT, TX
5 states
Status
Active
No deactivations on record
Last NPPES update
2026-04-29
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 3401 active psychologist providers in Texas.
NPI age
16 years
≈ at median (15 yr)
State licenses
5 states
Top 92% — 7% of peers are multi-state
Subspecialties
4
In the 26% of peers with subspecialties
NPI lifetime · 2009 → 2026
2009-09Enumerated in NPPES
2009
2026
Where they practice
Practice location
4202 Tule Cv
Austin, TX 787493822
Mailing address
4202 Tule Cv
Austin, TX 787493822
Specialties
-
Psychologist PrimaryA psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a...
-
CounselorDefinition to come...
-
CounselorA provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical...
-
CounselorDefinition to come...
-
PsychologistA 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,...
Practice context
Solo or small practice. No other active providers share this practice address in NPPES. This provider is listed as a sole proprietor.
Recently enumerated nearby: 10 new psychologist providers have been added in Austin in the last 180 days.
See all →
Provyx · Custom healthcare lists
Need all 3401 Psychologist providers in Texas?
Get the full list as a CSV with verified work emails, direct phones, and LinkedIn URLs.
Request a quote →How to verify this provider
- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.