JAMES THOMAS GRIER JR.
NPI 1881170553
Behavior Analyst in Rohnert Park, CA
NPI Status: Active since July 16, 2018
Contact Information
2 PADRE PKWY
ROHNERT PARK, CA
ZIP 94928
Phone: (707) 228-6167
NPPES record last updated: November 29, 2018. Verified against the NPPES registry weekly; last sync: July 12, 2026.
Record update history: Nov 29, 2018, Jul 16, 2018 (2 updates tracked since 2018).
- Individual
- Male
- Behavior Analyst
About JAMES GRIER
This page provides the complete NPI Profile along with additional information for James Grier, a provider established in Rohnert Park, California with a medical specialization in Behavior Analyst. The healthcare provider is registered in the NPI registry with number 1881170553 assigned on July 2018. The practitioner's primary taxonomy code is 103K00000X. The provider is registered as an individual and his NPI record was last updated 8 years ago.
- NPI
- 1881170553
- Provider Name
- JAMES THOMAS GRIER JR.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 2 PADRE PKWY ROHNERT PARK, CA 94928
- Location Phone
- (707) 228-6167
- Mailing Address
- PO BOX 2808 VACAVILLE, CA 95696
- Mailing Phone
- (510) 328-7176
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 07-16-2018
- Last Update Date
- 11-29-2018
- Code Navigator
Location Map
Secondary Locations
- 2 Padre Pkwy
Rohnert Park, CA 94928
(707) 228-6167
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
Behavior Analyst
- Taxonomy Code
- 103K00000X
- Type
- Behavioral Health & Social Service Providers
- Taxonomy Description
- A behavior analyst is qualified by at least a master's degree and Behavior Analyst Certification Board certification and/or a state-issued credential (such as a license) to practice behavior analysis independently. Behavior analysts provide the required supervision to assistant behavior analysts and behavior technicians. A behavior analyst delivers services consistent with the dimensions of applied behavior analysis. Common services may include, but are not limited to, conducting behavioral assessments, analyzing data, writing and revising behavior-analytic treatment plans, training others to implement components of treatment plans, and overseeing implementation of treatment plans.
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NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1881170553, we treat the final digit (3) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 57 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 10 providers are registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1881170553, enumerated as an "individual" on July 16, 2018.
The provider is located at 2 PADRE PKWY ROHNERT PARK, CA 94928 and the phone number is (707) 228-6167.
Behavior Analyst with taxonomy code 103K00000X.
