Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1386159705 Individual Practitioner Male Practitioner

Dr. John A Maddoux , PhD

Psychologist • San Antonio, TX

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. John Maddoux, PhD is a certified Psychologist practicing in San Antonio, TX. With approximately 10 years of clinical experience since completing medical education in 2016, Dr. Maddoux delivers high-quality medical care to the local community at 4100 E PIEDRAS DR STE 165.

Dr. Maddoux maintains professional affiliations with Center For Psychological Services, Pllc, R A Alvarado Medical Pllc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

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

4100 E Piedras Dr Ste 165

San Antonio, TX 782282502

Telephone 2107055060
Associated Practice Facility / Clinic
🏢 R A Alvarado Medical Pllc Facility NPI 1992117717

Medicare Profile & Education

Medical School

Other

Graduation Year

2016

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Psychologist in San Antonio, TX

Established Specialist (10-20 Yrs)
Practitioner Clinical Experience
10 Yrs -10.6 yrs vs City Avg
City Avg: 20.6 Yrs
State Avg: 22.8 Yrs
Regional Practice Density
185 Specialists

Practicing in San Antonio, TX (2266 Statewide)

Telehealth Adoption Rate
7.0% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount
72.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Maddoux (10 Years) 10 Yrs
San Antonio Specialty Average (20.6 Years) 20.6 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
90837 Psychotherapy, 60 minutes
62 11 $427.01 $133.31
90791 Psychiatric diagnostic evaluation
14 14 $544.09 $138.73

Medical Specialties & State Licenses

CMS Verified: 2025-03-18
Psychologist Primary Specialty

NUCC Taxonomy Code: 103T00000X

State License TX 37699

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.

Psychologist

NUCC Taxonomy Code: 103T00000X

State License MO 2017042123

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.

Hospital & Practice Group Affiliations

Center For Psychological Services, Pllc

6043 W Interstate 20, Arlington, TX 760171042

Phone: 8175330825

R A Alvarado Medical Pllc

4100 E Piedras Dr, San Antonio, TX 782282502

Phone: 2109106653

Secondary Practice Locations

6076 W Poly Webb Rd # 6043

Arlington, TX 76016

Phone: 8175330825

7901 Metropolis Dr

Austin, TX 787443111

Phone: 5128234000

2833 Babcock Rd Ste 435

San Antonio, TX 782294850

Phone: 2107055060

Practice Associates & Co-Workers

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

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Doctor of Medicine (M.D.)

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Physician Assistant

NPI 1083964993

Physician Assistant (Certified)

Dr. Alan Hibberd , MD

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NPI 1093752909

Doctor of Medicine (M.D.)

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Doctor of Podiatric Medicine

Career & Practice History Timeline

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

10 Historical Events
📍
Updated Practice Location March 18, 2025

Registered at 4100 E PIEDRAS DR STE 165, SAN ANTONIO, TX 782282502 (Tel: 2107055060)

📍
Updated Business Mailing Address March 11, 2023

Registered at 7901 METROPOLIS DR, AUSTIN, TX 787443111 (Tel: 5127397332)

📍
Updated Practice Location May 13, 2022

Registered at 7901 METROPOLIS DR, AUSTIN, TX 787443111 (Tel: 5128234000)

📍
Updated Business Mailing Address May 13, 2022

Registered at 4904 BONNEVILLE BND, AUSTIN, TX 787445430 (Tel: 4695566586)

NPI Profile Active December 07, 2017

NPI status registered as active in NPPES database

📍
Updated Practice Location December 07, 2017

Registered at 800 HOSPITAL DR, COLUMBIA, MO 652015275 (Tel: 5738146000)

📍
Updated Business Mailing Address December 07, 2017

Registered at 800 HOSPITAL DR, COLUMBIA, MO 652015275

👤
Provider Name / Credentials Updated December 07, 2017

Recorded as JOHN MADDOUX, PHD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) December 07, 2017

Psychologist (License #2017042123 in MO)

🟢
Initial NPI Registration & Enumeration December 07, 2017

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1386159705
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: December 07, 2017
Last Update: March 18, 2025
Sole Proprietor: No

Mailing Address

7901 Metropolis Dr

Austin, TX 787443111

Phone: 5127397332

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.