DR. GREGORY R THOMSON PHD
NPI 1750366902
Psychologist in San Jose, CA

NPI Status: Active since December 09, 2005

Contact Information

2512 SAMARITAN CT
SUITE I
SAN JOSE, CA
ZIP 95124
Phone: (408) 402-9858

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  • Individual
  • Male
  • Psychologist

About GREGORY THOMSON

This page provides the complete NPI Profile along with additional information for Gregory Thomson, a provider established in San Jose, California with a medical specialization in Psychologist. The healthcare provider is registered in the NPI registry with number 1750366902 assigned on December 2005. The practitioner's primary taxonomy code is 103T00000X with license number PSY14385 (CA). The provider is registered as an individual and his NPI record was last updated September 2025.

NPI
1750366902
Provider Name
DR. GREGORY R THOMSON PHD
Gender
Male
Entity Type
Individual
Location Address
2512 SAMARITAN CT SUITE I SAN JOSE, CA 95124
Location Phone
(408) 402-9858
Mailing Address
PO BOX 3240 SARATOGA, CA 95070
Mailing Phone
(408) 402-9858
Is Sole Proprietor?
Yes
Enumeration Date
12-09-2005
Last Update Date
09-11-2025
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A psychologist like Gregory Thomson studies cognitive, emotional, social processes and behavior by observing, interpreting, and recording how people relate to one another and to their environments. Psychologists gather information and evaluate behavior through controlled laboratory experiments, psychoanalysis, psychotherapy or through personality, performance, aptitude, or intelligence tests, and use this information when testing theories in their research or when treating patients.

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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Psychologist

Taxonomy Code
103T00000X
Type
Behavioral Health & Social Service Providers
License No.
PSY14385
License State
CA
Taxonomy Description
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.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1103G00000XBehavioral Health & Social Service Providers

Clinical Neuropsychologist

6301011373 (MI)
2103G00000XBehavioral Health & Social Service Providers

Clinical Neuropsychologist

PSY14385 (CA)
3103T00000XBehavioral Health & Social Service Providers

Psychologist

6301011373 (MI)
4103TB0200XBehavioral Health & Social Service Providers

Psychologist
Cognitive & Behavioral

PSY14385 (CA)
5103TB0200XBehavioral Health & Social Service Providers

Psychologist
Cognitive & Behavioral

6301011373 (MI)
6103TC0700XBehavioral Health & Social Service Providers

Psychologist
Clinical

PSY14385 (CA)
7103TC0700XBehavioral Health & Social Service Providers

Psychologist
Clinical

6301011373 (MI)
8103TC1900XBehavioral Health & Social Service Providers

Psychologist
Counseling

PSY14385 (CA)
9103TC1900XBehavioral Health & Social Service Providers

Psychologist
Counseling

6301011373 (MI)
10103TC2200XBehavioral Health & Social Service Providers

Psychologist
Clinical Child & Adolescent

PSY14385 (CA)
11103TC2200XBehavioral Health & Social Service Providers

Psychologist
Clinical Child & Adolescent

6301011373 (MI)

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1750366902
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
27100661290
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 7 + 1 + 0 + 0 + 6 + 6 + 1 + 2 + 9 + 0 + 24 = 58
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
60 - 58 = 22

The NPI number 1750366902 is valid because the calculated check digit 2 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 12 providers are registered at the same or nearby location.

DR. ROGER WAPNER PHD

Psychologist

(Clinical)

2512 SAMARITAN CT
# M
SAN JOSE, CA
ZIP 95124

(408) 817-5673

DR. DAVID W CHANG MD

Surgery

(Vascular Surgery)

2512 SAMARITAN CT
SUITE E
SAN JOSE, CA
ZIP 95124

(408) 358-8272

RONALD A RESTIFO MD A PROF CORP

Internal Medicine

(Rheumatology)

2512 SAMARITAN CT
STE P
SAN JOSE, CA
ZIP 95124

(408) 356-3181

SHEAU-LIN HO MD

Pediatrics

2512 SAMARITAN CT
SUITE H
SAN JOSE, CA
ZIP 95124

(408) 358-2681

MARLENE NONE DECKER MFT

Marriage & Family Therapist

2512 SAMARITAN CT
SAN JOSE, CA
ZIP 95124

(408) 486-9357

JERRY L. CALLAWAY M.D., INC

Internal Medicine

2512 SAMARITAN CT
SUITE M.
SAN JOSE, CA
ZIP 95124

(408) 358-3715

DR. DAVID S SILVERSTEIN M.D.

Specialist

2512 SAMARITAN CT
SUITE C
SAN JOSE, CA
ZIP 95124

(408) 358-3646

DAVID S. SILVERSTEIN, M.D., A PROFESSIONAL CORPORATION

Ophthalmology

2512 SAMARITAN CT
SUITE C
SAN JOSE, CA
ZIP 95124

(408) 358-3646

REBECCA L. MCCONNELL AA, BA, MA

Marriage & Family Therapist

2512 SAMARITAN CT
SUITE I
SAN JOSE, CA
ZIP 95124

(408) 444-1303

CECIL ARTHUR BRADLEY M.D.

Counselor

(Addiction (Substance Use Disorder))

2512 SAMARITAN CT
SUITE M
SAN JOSE, CA
ZIP 95124

(408) 356-3663

S. CHRIS HORINE DPM & NAJWA M JAVED, DPM

Podiatrist

(Foot & Ankle Surgery)

2512 SAMARITAN CT
SUITE A
SAN JOSE, CA
ZIP 95124

(408) 358-2666

DR. JASON HOMAN DPM

Podiatrist

(Foot & Ankle Surgery)

2512 SAMARITAN CT
STE A
SAN JOSE, CA
ZIP 95124

(408) 358-2666

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1750366902, enumerated as an "individual" on December 09, 2005.

The provider is located at 2512 SAMARITAN CT SUITE I SAN JOSE, CA 95124 and the phone number is (408) 402-9858.

Psychologist with taxonomy code 103T00000X.