Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John a Maddoux PHD PLLC

Organization Psychologist · NPI 1497447304

John a Maddoux PHD PLLC is a Psychologist in Austin, Texas. Registered with an NPI since 2023.

In the registry since
2023
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

5900 Balcones Dr Ste 13055
Austin, TX 78731-4257
Phone: (469) 556-6186
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X

Record details

NPI number1497447304
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official John Maddoux — Managing Member · (469) 556-6186
NPI enumeratedMay 22, 2023
Last updated in NPPESMay 22, 2023
Certification dateMay 22, 2023
Mailing address5900 Balcones Dr Ste 13055, Austin, TX 78731-4257

Other providers in Austin