Theron Liddell, PH.D.
Psychologist · Harlingen, TX
Theron Liddell, PH.D. is a psychologist with a practice address in Harlingen, Texas, and NPI 1528515939, issued on Sep 1, 2016. Check the license with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Theron Liddell
- Credential
- PH.D.
- Primary taxonomy
- Psychologist 103T00000X
- Practice location
- 2106 Treasure Hills Blvd, Harlingen, TX 78550
- Phone
- (956) 366-4500
- Enumerated
- Sep 1, 2016
- Record last updated
- Sep 1, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200921001545); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychologist records → All 2,141 in Texas → Look up another NPI →
Also registered at 2106 Treasure Hills Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Theron Liddell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this professionCheck 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
- Midwestern UniversityGlendale, AZ
- St Vincent HospitalSanta Fe, NM
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Theron Liddell among 2,141 psychologist records in Texas
Theron Liddell, PH.D. 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 2016, is newer than 61% of them.
- NPI issued2016 · 61% of these records are older, 36% newer
- In a Medicare fileYes · 11% of these records are
- In the CMS Doctors and Clinicians fileYes · 17% of these records are
- Graduated2025 · median 2007 among the 372 with a school on file
- Record last updated2016 · 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 Harlingen → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Stanley Clark, PSY.D.Harlingen, TX 785501356418966
- Carmen Flores, PH.D.Harlingen, TX 785501083800536
- Mary Gonzales, PYSDHarlingen, TX 785501780928465
- Jessica Grogan, PH.D.Harlingen, TX 785501811241300
- John Lynch, PSY.D.Harlingen, TX 785501588915839
- Brenda VerastigiHarlingen, TX 785501922419886
- Angelina Laurent, LPCEdinburg, TX 785411508640467
- Erica Perez, PH. D.Edinburg, TX 785411356694145
Common questions
What is Theron Liddell, PH.D.'s NPI number?
Theron Liddell, PH.D.'s National Provider Identifier (NPI) is 1528515939, issued on Sep 1, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Theron Liddell, PH.D. located?
The NPPES record lists a practice address at 2106 Treasure Hills Blvd, Harlingen, TX, 78550. Phone: (956) 366-4500. Providers update this record themselves, so call before visiting.
How can I verify Theron Liddell, PH.D.'s license?
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.