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
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- 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
- Code Navigator
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.
Location Map
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) |
---|---|---|---|---|
1 | 103G00000X | Behavioral Health & Social Service Providers | Clinical Neuropsychologist | 6301011373 (MI) |
2 | 103G00000X | Behavioral Health & Social Service Providers | Clinical Neuropsychologist | PSY14385 (CA) |
3 | 103T00000X | Behavioral Health & Social Service Providers | Psychologist | 6301011373 (MI) |
4 | 103TB0200X | Behavioral Health & Social Service Providers | Psychologist | PSY14385 (CA) |
5 | 103TB0200X | Behavioral Health & Social Service Providers | Psychologist | 6301011373 (MI) |
6 | 103TC0700X | Behavioral Health & Social Service Providers | Psychologist | PSY14385 (CA) |
7 | 103TC0700X | Behavioral Health & Social Service Providers | Psychologist | 6301011373 (MI) |
8 | 103TC1900X | Behavioral Health & Social Service Providers | Psychologist | PSY14385 (CA) |
9 | 103TC1900X | Behavioral Health & Social Service Providers | Psychologist | 6301011373 (MI) |
10 | 103TC2200X | Behavioral Health & Social Service Providers | Psychologist | PSY14385 (CA) |
11 | 103TC2200X | Behavioral Health & Social Service Providers | Psychologist | 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. | |||||||||
1 | 7 | 5 | 0 | 3 | 6 | 6 | 9 | 0 | 2 |
Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
2 | 7 | 10 | 0 | 6 | 6 | 12 | 9 | 0 | |
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 = 2 | 2 |
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
DR. DAVID W CHANG MD
Surgery
(Vascular Surgery)
2512 SAMARITAN CT
SUITE E
SAN JOSE, CA
ZIP 95124
RONALD A RESTIFO MD A PROF CORP
Internal Medicine
(Rheumatology)
2512 SAMARITAN CT
STE P
SAN JOSE, CA
ZIP 95124
SHEAU-LIN HO MD
Pediatrics
2512 SAMARITAN CT
SUITE H
SAN JOSE, CA
ZIP 95124
MARLENE NONE DECKER MFT
Marriage & Family Therapist
2512 SAMARITAN CT
SAN JOSE, CA
ZIP 95124
JERRY L. CALLAWAY M.D., INC
Internal Medicine
2512 SAMARITAN CT
SUITE M.
SAN JOSE, CA
ZIP 95124
DR. DAVID S SILVERSTEIN M.D.
Specialist
2512 SAMARITAN CT
SUITE C
SAN JOSE, CA
ZIP 95124
DAVID S. SILVERSTEIN, M.D., A PROFESSIONAL CORPORATION
Ophthalmology
2512 SAMARITAN CT
SUITE C
SAN JOSE, CA
ZIP 95124
REBECCA L. MCCONNELL AA, BA, MA
Marriage & Family Therapist
2512 SAMARITAN CT
SUITE I
SAN JOSE, CA
ZIP 95124
CECIL ARTHUR BRADLEY M.D.
Counselor
(Addiction (Substance Use Disorder))
2512 SAMARITAN CT
SUITE M
SAN JOSE, CA
ZIP 95124
S. CHRIS HORINE DPM & NAJWA M JAVED, DPM
Podiatrist
(Foot & Ankle Surgery)
2512 SAMARITAN CT
SUITE A
SAN JOSE, CA
ZIP 95124
DR. JASON HOMAN DPM
Podiatrist
(Foot & Ankle Surgery)
2512 SAMARITAN CT
STE A
SAN JOSE, CA
ZIP 95124
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.