JAMES S. GUERRERO PSY. D.
NPI 1851543839
Psychologist in Stafford, TX

Active since October 21, 2008PECOS EnrolledAccepts Medicare Assignment
4434 BLUEBONNET DR # 116, STAFFORD, TX 77477(281) 685-4587(281) 302-5571 Get Directions Write a Review

NPPES record last updated: October 23, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About James S. Guerrero Psy. D. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JAMES S. GUERRERO PSY. D. (NPI 1851543839) is an individual psychologist in Stafford, Texas, licensed in Texas (33789) and active in the NPI registry since October 2008. He is enrolled in Medicare PECOS and is a graduate of Other (2004).

NPPES Registry Identity

NPI1851543839
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameJAMES S. GUERREROCredential: PSY. D.
Location Address4434 BLUEBONNET DR # 116Stafford, TX 77477-2904
Mailing Address10498 Fountain Lake Dr Apt 1128Stafford, TX 77477-3766 · (281) 685-4587 · Fax (281) 302-5571
Fax(281) 302-5571
Sole ProprietorYes
Medical School CMSOtherGraduated 2004
Enumeration DateOctober 21, 2008
Last NPPES UpdateOctober 23, 2023
NPPES CertifiedOctober 23, 2023
✔ NPI 1851543839 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License✔ Licensed in TX · 33789
Definition
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.
4434 BLUEBONNET DR # 116, Stafford, TX 77477

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

James S. Guerrero Psy. D. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4587726617
PECOS Enrollment IDI20081223000500
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show James Guerrero reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Multi-Specialty
2422 FAIRBREEZE DR
Katy, TX 77494
  • Reassigned Medicare billing, Texas enrollment
  • 14 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Psychologist
4434 BLUEBONNET DR # 116
STAFFORD, TX 77477

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is James Guerrero's NPI number?

The NPI number for James Guerrero is 1851543839. It was assigned to this individual provider in the NPPES registry on October 21, 2008.

Where is James Guerrero located?

James Guerrero practices at 4434 Bluebonnet Dr # 116, Stafford, TX 77477. The listed phone number is (281) 685-4587.

What is James Guerrero's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is James Guerrero enrolled in Medicare?

Yes. James Guerrero is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for James Guerrero's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Guerrero reassigns Medicare benefits to Bliss Advanced Clinical Solutions, PLLC (Katy, TX). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for James Guerrero's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does James Guerrero accept?

Health plans from Blue Cross and Blue Shield of Texas, Cigna Healthcare, Oscar Insurance Company, UnitedHealthcare and WellPoint list James Guerrero as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for James Guerrero was last updated on October 23, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.