DR. KEITH STELL HARRIS PH.D.
NPI 1154477636
Psychologist - Clinical in Chico, CA

NPI Status: Active since January 26, 2007

Contact Information

400 W 1ST ST MODOC HALL
CHICO, CA
ZIP 95929
Phone: (760) 217-1727

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  • Individual
  • Male
  • Psychologist
  • Clinical

About KEITH HARRIS

This page provides the complete NPI Profile along with additional information for Keith Harris, a provider established in Chico, California with a medical specialization in Psychologist, focusing in clinical . The healthcare provider is registered in the NPI registry with number 1154477636 assigned on January 2007. The practitioner's primary taxonomy code is 103TC0700X with license number PSY11746 (CA). The provider is registered as an individual and his NPI record was last updated 5 years ago.

NPI
1154477636
Provider Name
DR. KEITH STELL HARRIS PH.D.
Gender
Male
Entity Type
Individual
Location Address
400 W 1ST ST MODOC HALL CHICO, CA 95929
Location Phone
(760) 217-1727
Mailing Address
2381 BLOOMINGTON AVE CHICO, CA 95928
Mailing Phone
(760) 217-1727
Is Sole Proprietor?
No
Enumeration Date
01-26-2007
Last Update Date
11-08-2021
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A clinical psychologist like Keith Harris assesses, diagnoses, and treats mental, emotional, and behavioral disorders. Clinical psychologists help people deal with problems ranging from short-term personal issues to severe, chronic conditions. Clinical psychologists interview patients, give diagnostic tests, provide psychotherapy and design behavior modification programs to help 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 Clinical

Taxonomy Code
103TC0700X
Type
Behavioral Health & Social Service Providers
License No.
PSY11746
License State
CA
Taxonomy Description
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

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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 1154477636, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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
1
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
4
Unchanged
Pos 5
4
Doubled → 8
Pos 6
7
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
6
Unchanged
Pos 9
3
Doubled → 6
Check
6
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 4 → 8 7 → 14 → 5 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 1 + 0 + 4 + 8 + 7 + 1 + 4 + 6 + 6 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1154477636.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1154477636, enumerated as an "individual" on January 26, 2007.

The provider is located at 400 W 1ST ST MODOC HALL CHICO, CA 95929 and the phone number is (760) 217-1727.

Psychologist with taxonomy code 103TC0700X and a focus in Clinical.