DR. WENDELL J CALLAHAN PHD
NPI 1174141717
Psychologist - School in San Diego, CA

NPI Status: Active since July 09, 2020

Contact Information

5998 ALCALA PARK
MRH 215
SAN DIEGO, CA
ZIP 92110
Phone: (619) 573-0292

Get Directions Write a Review

NPPES record last updated: July 9, 2020. Verified against the NPPES registry weekly; last sync: July 12, 2026.

  • Individual
  • Male
  • Psychologist
  • School

About WENDELL CALLAHAN

This page provides the complete NPI Profile along with additional information for Wendell Callahan, a provider established in San Diego, California with a medical specialization in Psychologist, focusing in school . The healthcare provider is registered in the NPI registry with number 1174141717 assigned on July 2020. The practitioner's primary taxonomy code is 103TS0200X with license number LEP2145 (CA). The provider is registered as an individual and his NPI record was last updated 6 years ago.

NPI
1174141717
Provider Name
DR. WENDELL J CALLAHAN PHD
Gender
Male
Entity Type
Individual
Location Address
5998 ALCALA PARK MRH 215 SAN DIEGO, CA 92110
Location Phone
(619) 573-0292
Mailing Address
5998 ALCALA PARK MRH 215 SAN DIEGO, CA 92110
Is Sole Proprietor?
Yes
Enumeration Date
07-09-2020
Last Update Date
07-09-2020
Code Navigator

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 School

Taxonomy Code
103TS0200X
Type
Behavioral Health & Social Service Providers
License No.
LEP2145
License State
CA
Taxonomy Description
A psychologist whose specialty is concerned with the science and practice of psychology with children, youth, families; learners of all ages; and the schooling process. The basic education and training of school psychologists prepares them to provide a range of psychological diagnosis, assessment, intervention, prevention, health promotion, and program development and evaluation services with a special focus on the developmental processes of children and youth within the context of schools, families and other systems. School psychologists are prepared to intervene at the individual and system level, and develop, implement, and evaluate preventive programs. In these efforts, they conduct ecologically valid assessments and intervene to promote positive learning environments within which children and youth from diverse backgrounds to ensure that all have equal access to effective educational and psychological services that promote healthy development

Reviews for DR. WENDELL J CALLAHAN PHD

There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.

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 1174141717, 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 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
7
Doubled → 14 → 1 + 4
Pos 4
4
Unchanged
Pos 5
1
Doubled → 2
Pos 6
4
Unchanged
Pos 7
1
Doubled → 2
Pos 8
7
Unchanged
Pos 9
1
Doubled → 2
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 7 → 14 → 5 1 → 2 1 → 2 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 1 + 4 + 4 + 2 + 4 + 2 + 7 + 2 + 24 = 53

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

The next multiple of ten after 53 is 60. The difference is the calculated check digit.

60 - 53 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1174141717.

Other Providers at the Same Location


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

Specialist/Technologist (Athletic Trainer)
5998 ALCALA PARK
SAN DIEGO, CA 92110
Specialist/Technologist (Athletic Trainer)
5998 ALCALA PARK
SAN DIEGO, CA 92110
Specialist/Technologist (Athletic Trainer)
5998 ALCALA PARK
SAN DIEGO, CA 92110
Specialist/Technologist (Athletic Trainer)
5998 ALCALA PARK
SAN DIEGO, CA 92110
Marriage & Family Therapist
5998 ALCALA PARK, SOLES, UNIVERSITY OF SAN DIEGO
SAN DIEGO, CA 92110
Pediatrics
5998 ALCALA PARK, CAMINO 161
SAN DIEGO, CA 92110
Preventive Medicine (Public Health & General Preventive Medicine)
5998 ALCALA PARK, STUDENT HEALTH CENTER
SAN DIEGO, CA 92110
Specialist/Technologist (Athletic Trainer)
5998 ALCALA PARK
SAN DIEGO, CA 92110
Specialist/Technologist (Athletic Trainer)
5998 ALCALA PARK
SAN DIEGO, CA 92110
Specialist/Technologist (Athletic Trainer)
5998 ALCALA PARK
SAN DIEGO, CA 92110
Specialist/Technologist, Other
5998 ALCALA PARK
SAN DIEGO, CA 92110
Specialist/Technologist (Athletic Trainer)
5998 ALCALA PARK
SAN DIEGO, CA 92110
Clinic/Center (Student Health)
5998 ALCALA PARK, MAHER 140
SAN DIEGO, CA 92110
Social Worker (Clinical)
5998 ALCALA PARK
SAN DIEGO, CA 92110
Specialist/Technologist (Athletic Trainer)
5998 ALCALA PARK
SAN DIEGO, CA 92110
Nurse Practitioner (Adult Health)
5998 ALCALA PARK, STUDENT HEALTH CENTER, MAHER HALL 140
SAN DIEGO, CA 92110
Specialist/Technologist (Athletic Trainer)
5998 ALCALA PARK
SAN DIEGO, CA 92110
Counselor
5998 ALCALA PARK
SAN DIEGO, CA 92110
Specialist/Technologist (Athletic Trainer)
5998 ALCALA PARK
SAN DIEGO, CA 92110
Specialist/Technologist (Athletic Trainer)
5998 ALCALA PARK
SAN DIEGO, CA 92110

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1174141717, enumerated as an "individual" on July 09, 2020.

The provider is located at 5998 ALCALA PARK MRH 215 SAN DIEGO, CA 92110 and the phone number is (619) 573-0292.

Psychologist with taxonomy code 103TS0200X and a focus in School.