DR. LYNDA HEIDEN PH.D.
NPI 1467503813
Psychologist - Health Service in Mountain View, CA

NPI Status: Active since January 14, 2007

Contact Information

1059 EL MONTE AVE
SUITE B
MOUNTAIN VIEW, CA
ZIP 94040
Phone: (650) 856-0338

NPI Profile Information
Primary Taxonomy
Secondary Taxonomies
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Psychologist
Health Service

About LYNDA HEIDEN

This page provides the complete NPI Profile along with additional information for Lynda Heiden, a provider established in Mountain View, California with a medical specialization in Psychologist, focusing in health service . The healthcare provider is registered in the NPI registry with number 1467503813 assigned on January 2007. The practitioner's primary taxonomy code is 103TH0100X with license number PSY14455 (CA). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1467503813
Provider Name: DR. LYNDA HEIDEN PH.D.
Gender: Female
Entity Type: Individual
Location Address: 1059 EL MONTE AVE SUITE B MOUNTAIN VIEW, CA 94040
Location Phone: (650) 856-0338
Mailing Address: 122 GREENMEADOW WAY PALO ALTO, CA 94306
Mailing Phone: (650) 856-0338
Is Sole Proprietor?: Yes
Enumeration Date: 01-14-2007
Last Update Date: 09-11-2025
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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: Psychologist Health Service
Taxonomy Code: 103TH0100X
Type: Behavioral Health & Social Service Providers
License No.: PSY14455
License State: CA
Taxonomy Description: A psychologist, certified/licensed at the independent practice level in his/her state, who is duly trained and experienced in the delivery of direct, preventative, assessment, and therapeutic intervention services to individuals whose growth, adjustment, or functioning is actually impaired or is demonstrably at high risk of impairment (1974).

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)
1	103T00000X	Behavioral Health & Social Service Providers	Psychologist	PSY14455 (CA)
2	103TB0200X	Behavioral Health & Social Service Providers	Psychologist Cognitive & Behavioral	PSY14455 (CA)
3	103TC0700X	Behavioral Health & Social Service Providers	Psychologist Clinical	PSY14455 (CA)
4	103TC2200X	Behavioral Health & Social Service Providers	Psychologist Clinical Child & Adolescent	PSY14455 (CA)
5	103TM1800X	Behavioral Health & Social Service Providers	Psychologist Intellectual and Developmental Disabilities	PSY14455 (CA)

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 1467503813, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 12 → 1 + 2

Pos 4

Unchanged

Pos 5

Doubled → 10 → 1 + 0

Pos 6

Unchanged

Pos 7

Doubled → 6

Pos 8

Unchanged

Pos 9

Doubled → 2

Check

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 6 → 12 → 3 5 → 10 → 1 3 → 6 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 1 + 2 + 7 + 1 + 0 + 0 + 6 + 8 + 2 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3

This NPI is valid

The calculated check digit is 3, which matches the last digit of 1467503813.