NPPES file of Aug 9, 2026

James S. Guerrero, PSY. D.

Psychologist · Stafford, TX

James S. Guerrero, PSY. D. is a psychologist with a practice address in Stafford, Texas, and NPI 1851543839, issued on Oct 21, 2008. Check the license (Texas 33789, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1851543839
Name
James S. Guerrero
Credential
PSY. D.
Primary taxonomy
Psychologist 103T00000X
License number
33789 TX
Self-reported in NPPES; status is on the state search
Practice location
4434 Bluebonnet Dr # 116, Stafford, TX 77477
Phone
(281) 685-4587
Enumerated
Oct 21, 2008
Record last updated
Oct 23, 2023
Fax
(281) 302-5571
Medicare enrollment
Enrolled (PECOS I20081223000500); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify James S. Guerrero in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Texas board licenses this profession
    Search for license 33789
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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Bills Medicare through one group practice

  1. Bliss Advanced Clinical Solutions, PLLCKaty, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

James S. Guerrero among 2,141 psychologist records in Texas

James S. Guerrero, PSY. 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 2008, is newer than 35% of them.

  • NPI issued2008 · 35% of these records are older, 62% newer
  • In a Medicare fileYes · 11% of these records are
  • In the CMS Doctors and Clinicians fileYes · 17% of these records are
  • Graduated2004 · median 2007 among the 372 with a school on file
  • Record last updated2023 · 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.

The 8 psychologist records with the nearest ZIP codes

  1. Carilla Bonner, MSStafford, TX 774771336789312
  2. Celeste Conlon, PH.D.Sugar Land, TX 774781609136902
  3. Robert Conlon, PH.D.Sugar Land, TX 774781962808493
  4. Vera Gonzales, PH.D.Sugar Land, TX 774781861579187
  5. Marcia Laviage, PH.D.Sugar Land, TX 774781265465231
  6. Angela Pfeiffer, PH.D.Sugar Land, TX 774781750314886
  7. Yichun Cao, PHDSugar Land, TX 774791477490563
  8. Michael Ditsky, PH.D.Sugar Land, TX 774791235175985

Common questions

What is James S. Guerrero, PSY. D.'s NPI number?

James S. Guerrero, PSY. D.'s National Provider Identifier (NPI) is 1851543839, issued on Oct 21, 2008. An NPI identifies a provider in billing; it is not a license.

Where is James S. Guerrero, PSY. D. located?

The NPPES record lists a practice address at 4434 Bluebonnet Dr # 116, Stafford, TX, 77477. Phone: (281) 685-4587. Providers update this record themselves, so call before visiting.

How can I verify James S. Guerrero, PSY. D.'s license?

NPPES lists Texas license number 33789, 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.