Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. John A Maddoux, PHD

Individual provider Psychologist · NPI 1386159705

Dr. John A Maddoux, PHD is a Clinical Psychologist in San Antonio, Texas. Qualified in 2016, 10 years ago. Practices with R a Alvarado Medical PLLC, a 2-clinician group, works from 4 locations, accepts Medicare assignment and offers telehealth. Licensed in Missouri and Texas.

Years since qualifying
10
Licensed in
MO, TX
In the registry since
2017
Specialties on file
2
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

4100 E Piedras Dr Ste 165
San Antonio, TX 78228-2502
Phone: (210) 705-5060
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 6076 W Poly Webb Rd # 6043, Arlington, TX 76016 — (817) 533-0825
  • 7901 Metropolis Dr, Austin, TX 78744-3111 — (512) 823-4000
  • 2833 Babcock Rd Ste 435, San Antonio, TX 78229-4850 — (210) 705-5060

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 37699 (TX)
Psychologist Taxonomy 103T00000X · Licence 2017042123 (MO)

Record details

NPI number1386159705
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedDecember 7, 2017
Last updated in NPPESMarch 18, 2025
Certification dateMarch 18, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice R A Alvarado Medical Pllc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients25
Services billed 179 a service is one billed item, such as a visit, a test or a procedure
Average patient age63

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at R a Alvarado Medical PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in San Antonio