C. NAOMI WAHLER, PHD, CLINICAL PSYCHOLOGY AND ASSESSMENT SERVICES, INC
NPI 1184179749
Psychologist - Clinical in San Diego, CA

NPI Status: Active since August 23, 2016

Contact Information

9815 CARROLL CANYON RD STE 103
SAN DIEGO, CA
ZIP 92131
Phone: (858) 254-9986
Fax: (844) 584-3546

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  • Organization
  • Psychologist
  • Clinical

About C. NAOMI WAHLER, PHD, CLINICAL PSYCHOLOGY AND ASSESSMENT SERVICES, INC

This page provides the complete NPI Profile along with additional information for C. Naomi Wahler, Phd, Clinical Psychology And Assessment Services, Inc, a provider established in San Diego, California operating as a Psychologist, focusing in clinical . The healthcare provider is registered in the NPI registry with number 1184179749 assigned on August 2016. The practitioner's primary taxonomy code is 103TC0700X with license number PSY28017 (CA). The provider is registered as an organization and their NPI record was last updated January 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Chrestina Naomi Wahler Phd (President)

NPI
1184179749
Provider Name
C. NAOMI WAHLER, PHD, CLINICAL PSYCHOLOGY AND ASSESSMENT SERVICES, INC
Entity Type
Organization
Location Address
9815 CARROLL CANYON RD STE 103 SAN DIEGO, CA 92131
Location Phone
(858) 254-9986
Location Fax
(844) 584-3546
Mailing Address
9815 CARROLL CANYON RD STE 103 SAN DIEGO, CA 92131
Mailing Phone
(858) 254-9986
Mailing Fax
(844) 584-3546
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
08-23-2016
Last Update Date
01-21-2026
Code Navigator

A clinical psychologist like C. Naomi Wahler, Phd, Clinical Psychology And Assessment Services, Inc 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.
PSY28017
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.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. CHRESTINA NAOMI WAHLER PHD

Authorized Official Title
PRESIDENT
Authorized Official Phone
(858) 254-9986

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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 1184179749, we treat the final digit (9) 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 9).

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
8
Doubled → 16 → 1 + 6
Pos 4
4
Unchanged
Pos 5
1
Doubled → 2
Pos 6
7
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
7
Unchanged
Pos 9
4
Doubled → 8
Check
9
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 8 → 16 → 7 1 → 2 9 → 18 → 9 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 1 + 6 + 4 + 2 + 7 + 1 + 8 + 7 + 8 + 24 = 71

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

The next multiple of ten after 71 is 80. The difference is the calculated check digit.

80 - 71 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1184179749.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1184179749, enumerated as an "organization" on August 23, 2016.

The provider is located at 9815 CARROLL CANYON RD STE 103 SAN DIEGO, CA 92131 and the phone number is (858) 254-9986.

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