DR. STACY HALL JOHNSTONE PSYCHOLOGIST
NPI 1114050507
Psychologist - Clinical in Camarillo, CA

NPI Status: Active since March 14, 2007

Contact Information

340 ROSEWOOD AVE
SUITE G
CAMARILLO, CA
ZIP 93010
Phone: (805) 482-5221
Fax: (805) 987-7994

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  • Individual
  • Male
  • Psychologist
  • Clinical

About STACY JOHNSTONE

This page provides the complete NPI Profile along with additional information for Stacy Johnstone, a provider established in Camarillo, California with a medical specialization in Psychologist, focusing in clinical . The healthcare provider is registered in the NPI registry with number 1114050507 assigned on March 2007. The practitioner's primary taxonomy code is 103TC0700X with license number PSY20946 (CA). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1114050507
Provider Name
DR. STACY HALL JOHNSTONE PSYCHOLOGIST
Gender
Male
Entity Type
Individual
Location Address
340 ROSEWOOD AVE SUITE G CAMARILLO, CA 93010
Location Phone
(805) 482-5221
Location Fax
(805) 987-7994
Mailing Address
340 ROSEWOOD AVE SUITE G CAMARILLO, CA 93010
Mailing Phone
(805) 482-5221
Mailing Fax
(805) 987-7994
Is Sole Proprietor?
Yes
Enumeration Date
03-14-2007
Last Update Date
07-08-2007
Code Navigator

A clinical psychologist like Stacy Johnstone 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.
PSY20946
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 1114050507, we treat the final digit (7) 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 43. The final step is to find the difference between that total and the next multiple of ten (50 - 43 = 7).

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
1
Doubled → 2
Pos 4
4
Unchanged
Pos 5
0
Doubled → 0
Pos 6
5
Unchanged
Pos 7
0
Doubled → 0
Pos 8
5
Unchanged
Pos 9
0
Doubled → 0
Check
7
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 1 → 2 0 → 0 0 → 0 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 2 + 4 + 0 + 5 + 0 + 5 + 0 + 24 = 43

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

The next multiple of ten after 43 is 50. The difference is the calculated check digit.

50 - 43 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1114050507.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Psychologist (Clinical)
340 ROSEWOOD AVE
CAMARILLO, CA 93010
Psychiatry & Neurology (Psychiatry)
340 ROSEWOOD AVE, SUITE A
CAMARILLO, CA 93010

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1114050507, enumerated as an "individual" on March 14, 2007.

The provider is located at 340 ROSEWOOD AVE SUITE G CAMARILLO, CA 93010 and the phone number is (805) 482-5221.

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