DR. CHRISTINE LYNN JOHNSTON PSY.D.
NPI 1144473968
Psychologist - Clinical in Phoenix, AZ

NPI Status: Active since October 23, 2008

Contact Information

2500 E VAN BUREN ST
PHOENIX, AZ
ZIP 85008
Phone: (602) 220-6191

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  • Individual
  • Female
  • Psychologist
  • Clinical

About CHRISTINE JOHNSTON

This page provides the complete NPI Profile along with additional information for Christine Johnston, a provider established in Phoenix, Arizona with a medical specialization in Psychologist, focusing in clinical . The healthcare provider is registered in the NPI registry with number 1144473968 assigned on October 2008. The practitioner's primary taxonomy code is 103TC0700X with license number 3942 (AZ). The provider is registered as an individual and her NPI record was last updated 18 years ago.

NPI
1144473968
Provider Name
DR. CHRISTINE LYNN JOHNSTON PSY.D.
Gender
Female
Entity Type
Individual
Location Address
2500 E VAN BUREN ST PHOENIX, AZ 85008
Location Phone
(602) 220-6191
Mailing Address
2346 W FLOWER ST PHOENIX, AZ 85015
Mailing Phone
(602) 828-7972
Is Sole Proprietor?
No
Enumeration Date
10-23-2008
Last Update Date
10-23-2008
Code Navigator

A clinical psychologist like Christine Johnston 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.

Location Map

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.
3942
License State
AZ
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.

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)
1101YA0400XBehavioral Health & Social Service Providers

Counselor
Addiction (Substance Use Disorder)

10439 (AZ)
2101YP2500XBehavioral Health & Social Service Providers

Counselor
Professional

12449 (AZ)

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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 1144473968, we treat the final digit (8) 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 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 8).

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

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 8 + 4 + 8 + 7 + 6 + 9 + 1 + 2 + 24 = 72

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

The next multiple of ten after 72 is 80. The difference is the calculated check digit.

80 - 72 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1144473968.

Other Providers at the Same Location


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

Psychologist (Clinical)
2500 E VAN BUREN ST, MTU ASPC PHOENIX
PHOENIX, AZ 85008
Family Medicine
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Physician Assistant (Medical)
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Long Term Care Hospital
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Long Term Care Hospital
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Long Term Care Hospital
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Psychiatry & Neurology (Psychiatry)
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Dentist
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Long Term Care Hospital
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Long Term Care Hospital
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Legal Medicine
2500 E VAN BUREN ST, ASPC PHOENIX HEALTH UNIT
PHOENIX, AZ 85008
Registered Nurse (Diabetes Educator)
2500 E VAN BUREN ST, BLDG F REHABILITATION
PHOENIX, AZ 85008
Family Medicine
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Family Medicine
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Internal Medicine
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Family Medicine
2500 E VAN BUREN ST
PHOENIX, AZ 85008
General Practice
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Nurse Practitioner (Psychiatric/Mental Health)
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Social Worker
2500 E VAN BUREN ST
PHOENIX, AZ 85008
Psychiatry & Neurology (Psychiatry)
2500 E VAN BUREN ST
PHOENIX, AZ 85008

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1144473968, enumerated as an "individual" on October 23, 2008.

The provider is located at 2500 E VAN BUREN ST PHOENIX, AZ 85008 and the phone number is (602) 220-6191.

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