John A. Maddoux, PHD
Psychologist · San Antonio, TX
John A. Maddoux, PHD is a psychologist with a practice address in San Antonio, Texas, and NPI 1386159705, issued on Dec 7, 2017. Check the license (Texas 37699, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John A. Maddoux
- Credential
- PHD
- Primary taxonomy
- Psychologist 103T00000X
- License numbers
- 37699 TX
2017042123 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4100 E Piedras Dr Ste 165, San Antonio, TX 78228
- Phone
- (210) 705-5060
- Enumerated
- Dec 7, 2017
- Record last updated
- Mar 18, 2025
- Medicare enrollment
- Enrolled (PECOS I20190124002133); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychologist records → All 2,141 in Texas → Look up another NPI →
Also registered at 4100 E Piedras Dr Ste 165
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ricardo Alvarado, MDPain Medicine Physician1497935456
Verify John A. Maddoux in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 37699Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Center For Psychological Services, PLLCArlington, TX
- R A Alvarado Medical PLLCSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John A. Maddoux among 2,141 psychologist records in Texas
John A. Maddoux, PHD is one of 2,141 psychologist records with a practice address in Texas. 11% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 64% of them.
- NPI issued2017 · 64% of these records are older, 33% newer
- In a Medicare fileYes · 11% of these records are
- In the CMS Doctors and Clinicians fileYes · 17% of these records are
- Graduated2016 · median 2007 among the 372 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychologist providers in Texas
There are 2,141 psychologist records in Texas.
All 2,141 in Texas → Every provider in San Antonio → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Robert Bobele, PHDSan Antonio, TX 782281831234244
- Patrick Hopkins, PSY.D.San Antonio, TX 782281588703649
- Arnold Slive, PHDSan Antonio, TX 782281962547224
- Mary Torres, PSY.D.San Antonio, TX 782281194740423
- Ellen Bajorek, PHDSan Antonio, TX 782291063417541
- Joseph Blader, PH.D.San Antonio, TX 782291467408542
- Virginia Bonnefil, PHDSan Antonio, TX 782291396728374
- Ronald Farnsworth, PHDSan Antonio, TX 782291679587109
Common questions
What is John A. Maddoux, PHD's NPI number?
John A. Maddoux, PHD's National Provider Identifier (NPI) is 1386159705, issued on Dec 7, 2017. An NPI identifies a provider in billing; it is not a license.
Where is John A. Maddoux, PHD located?
The NPPES record lists a practice address at 4100 E Piedras Dr Ste 165, San Antonio, TX, 78228. Phone: (210) 705-5060. Providers update this record themselves, so call before visiting.
How can I verify John A. Maddoux, PHD's license?
NPPES lists Texas license number 37699, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.