DR. DAVID W PERRY PHD
NPI 1659968865
Clinical Neuropsychologist in Berkeley, CA

NPI Status: Active since December 22, 2020

Contact Information

1112 KEELER AVE
BERKELEY, CA
ZIP 94708
Phone: (510) 388-3611

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  • Individual
  • Male
  • Clinical Neuropsychologist

About DAVID PERRY

This page provides the complete NPI Profile along with additional information for David Perry, a provider established in Berkeley, California with a medical specialization in Clinical Neuropsychologist. The healthcare provider is registered in the NPI registry with number 1659968865 assigned on December 2020. The practitioner's primary taxonomy code is 103G00000X with license number 17016 (CA). The provider is registered as an individual and his NPI record was last updated 5 years ago.

NPI
1659968865
Provider Name
DR. DAVID W PERRY PHD
Gender
Male
Entity Type
Individual
Location Address
1112 KEELER AVE BERKELEY, CA 94708
Location Phone
(510) 388-3611
Mailing Address
1112 KEELER AVE BERKELEY, CA 94708
Mailing Phone
(510) 388-3611
Is Sole Proprietor?
Yes
Enumeration Date
12-22-2020
Last Update Date
12-22-2020
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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

Clinical Neuropsychologist

Taxonomy Code
103G00000X
Type
Behavioral Health & Social Service Providers
License No.
17016
License State
CA
Taxonomy Description
A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.

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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 1659968865, we treat the final digit (5) 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 75. The final step is to find the difference between that total and the next multiple of ten (80 - 75 = 5).

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
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
9
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
6
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
8
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
5
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 5 → 10 → 1 9 → 18 → 9 8 → 16 → 7 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 0 + 9 + 1 + 8 + 6 + 1 + 6 + 8 + 1 + 2 + 24 = 75

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

The next multiple of ten after 75 is 80. The difference is the calculated check digit.

80 - 75 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1659968865.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1659968865, enumerated as an "individual" on December 22, 2020.

The provider is located at 1112 KEELER AVE BERKELEY, CA 94708 and the phone number is (510) 388-3611.

Clinical Neuropsychologist with taxonomy code 103G00000X.