CHESTER ABBOTT M.D.
NPI 1053442186
Psychiatry & Neurology - Child & Adolescent Psychiatry in Pasadena, CA

NPI Status: Active since March 08, 2007

Contact Information

118 S OAK KNOLL AVE
PASADENA, CA
ZIP 91101
Phone: (626) 795-6907

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  • Individual
  • Male
  • Psychiatry & Neurology
  • Child & Adolescent Psychiatry

About CHESTER ABBOTT

This page provides the complete NPI Profile along with additional information for Chester Abbott, a provider established in Pasadena, California with a medical specialization in Psychiatry & Neurology, focusing in child & adolescent psychiatry . The healthcare provider is registered in the NPI registry with number 1053442186 assigned on March 2007. The practitioner's primary taxonomy code is 2084P0804X with license number A73915 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1053442186
Provider Name
CHESTER ABBOTT M.D.
Gender
Male
Entity Type
Individual
Location Address
118 S OAK KNOLL AVE PASADENA, CA 91101
Location Phone
(626) 795-6907
Mailing Address
940 AVENUE 64 PASADENA, CA 91105
Mailing Phone
(323) 254-2274
Mailing Fax
Is Sole Proprietor?
Yes
Enumeration Date
03-08-2007
Last Update Date
06-03-2025
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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

Psychiatry & Neurology Child & Adolescent Psychiatry

Taxonomy Code
2084P0804X
Type
Allopathic & Osteopathic Physicians
License No.
A73915
License State
CA
Taxonomy Description
Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.

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)
12084P0800XAllopathic & Osteopathic Physicians

Psychiatry & Neurology
Psychiatry

A73915 (CA)

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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 1053442186, 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 54. The final step is to find the difference between that total and the next multiple of ten (60 - 54 = 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
0
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
3
Unchanged
Pos 5
4
Doubled → 8
Pos 6
4
Unchanged
Pos 7
2
Doubled → 4
Pos 8
1
Unchanged
Pos 9
8
Doubled → 16 → 1 + 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 2 → 4 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 1 + 0 + 3 + 8 + 4 + 4 + 1 + 1 + 6 + 24 = 54

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

The next multiple of ten after 54 is 60. The difference is the calculated check digit.

60 - 54 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1053442186.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Marriage & Family Therapist
118 S OAK KNOLL AVE
PASADENA, CA 91101
Rehabilitation Practitioner
118 S OAK KNOLL AVE
PASADENA, CA 91101
Marriage & Family Therapist
118 S OAK KNOLL AVE
PASADENA, CA 91101
Rehabilitation Practitioner
118 S OAK KNOLL AVE
PASADENA, CA 91101
Marriage & Family Therapist
118 S OAK KNOLL AVE
PASADENA, CA 91101
Marriage & Family Therapist
118 S OAK KNOLL AVE
PASADENA, CA 91101
Marriage & Family Therapist
118 S OAK KNOLL AVE
PASADENA, CA 91101
Psychologist (Clinical)
118 S OAK KNOLL AVE
PASADENA, CA 91101
Marriage & Family Therapist
118 S OAK KNOLL AVE
PASADENA, CA 91101
Social Worker (Clinical)
118 S OAK KNOLL AVE
PASADENA, CA 91101
Marriage & Family Therapist
118 S OAK KNOLL AVE
PASADENA, CA 91101
Rehabilitation Practitioner
118 S OAK KNOLL AVE
PASADENA, CA 91101
Marriage & Family Therapist
118 S OAK KNOLL AVE
PASADENA, CA 91101
Marriage & Family Therapist
118 S OAK KNOLL AVE
PASADENA, CA 91101
Marriage & Family Therapist
118 S OAK KNOLL AVE
PASADENA, CA 91101
Rehabilitation Practitioner
118 S OAK KNOLL AVE
PASADENA, CA 91101
Social Worker (Clinical)
118 S OAK KNOLL AVE
PASADENA, CA 91101
Social Worker (Clinical)
118 S OAK KNOLL AVE
PASADENA, CA 91101
Social Worker (Clinical)
118 S OAK KNOLL AVE
PASADENA, CA 91101
Rehabilitation Practitioner
118 S OAK KNOLL AVE
PASADENA, CA 91101

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1053442186, enumerated as an "individual" on March 08, 2007.

The provider is located at 118 S OAK KNOLL AVE PASADENA, CA 91101 and the phone number is (626) 795-6907.

Psychiatry & Neurology with taxonomy code 2084P0804X and a focus in Child & Adolescent Psychiatry.