JEFFREY JAY DAVIS PH.D.
NPI 1740760461
Psychologist - Forensic in Coalinga, CA

NPI Status: Active since August 21, 2018

Contact Information

24511 W JAYNE AVE
COALINGA, CA
ZIP 93210
Phone: (559) 396-6325

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Psychologist
Forensic

About JEFFREY DAVIS

This page provides the complete NPI Profile along with additional information for Jeffrey Davis, a provider established in Coalinga, California with a medical specialization in Psychologist, focusing in forensic . The healthcare provider is registered in the NPI registry with number 1740760461 assigned on August 2018. The practitioner's primary taxonomy code is 103TF0200X with license number PSY19044 (CA). The provider is registered as an individual and his NPI record was last updated 8 years ago.

NPI: 1740760461
Provider Name: JEFFREY JAY DAVIS PH.D.
Gender: Male
Entity Type: Individual
Location Address: 24511 W JAYNE AVE COALINGA, CA 93210
Location Phone: (559) 396-6325
Mailing Address: PO BOX 5000 COALINGA, CA 93210
Mailing Phone: (559) 396-6325
Is Sole Proprietor?: No
Enumeration Date: 08-21-2018
Last Update Date: 08-21-2018
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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 Forensic
Taxonomy Code: 103TF0200X
Type: Behavioral Health & Social Service Providers
License No.: PSY19044
License State: CA
Taxonomy Description: A psychologist whose specialty is characterized by activities primarily intended to provide professional psychological expertise within the judicial and legal systems.

NPI 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 1740760461, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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.

Pos 1

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 8

Pos 4

Unchanged

Pos 5

Doubled → 14 → 1 + 4

Pos 6

Unchanged

Pos 7

Doubled → 0

Pos 8

Unchanged

Pos 9

Doubled → 12 → 1 + 2

Check

Target digit

Regular digit Doubled digit Check digit

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.

1 → 2 4 → 8 7 → 14 → 5 0 → 0 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 7 + 8 + 0 + 1 + 4 + 6 + 0 + 4 + 1 + 2 + 24 = 59

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1

This NPI is valid

The calculated check digit is 1, which matches the last digit of 1740760461.